{"_self":{"principle":"Self-explaining payload — no external context required. 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Per-claim provenance."}],"not_medical_advice":true},"slug":"semax-tbi-concussion","title":"Semax for TBI and Concussion: Evidence Review","register":"source_ledger","tags":["peptide","topic"],"updated_at":"2026-07-17T02:41:58.896Z","body_excerpt":"## Background on TBI and BDNF\n\nConcussion and traumatic brain injury (TBI) involve neuronal damage where endogenous BDNF levels are frequently insufficient for complete recovery (mechanistic).\n\n## Semax Mechanism\n\nSemax is a synthetic heptapeptide analog of ACTH(4-10) that upregulates BDNF expression and signaling (mechanistic, supported by rat astrocyte and hippocampal studies).\n\n## Preclinical Evidence (Rat Studies)\n\nIn rat basal forebrain astrocyte cultures, Semax increased BDNF protein levels (preclinical). In rat hippocampus, a single dose elevated BDNF protein 1.4-fold, TrkB phosphorylation 1.6-fold, and related mRNA (preclinical). Additional rat ischemia and hypoxia models showed Semax-induced changes in BDNF and NGF gene expression in cortex and hippocampus (preclinical). No rat TBI-specific models identified in searches.\n\n## Human Data\n\nNo human clinical trials on Semax for TBI or concussion were identified. Human studies exist for ischemic stroke: one trial in 30 patients with acute hemispheric ischemic stroke and another reporting increased plasma BDNF in 110 post-stroke patients, with higher BDNF linked to improved rehabilitation timing (human). Semax is approved in Russia for certain neurological conditions including brain trauma, per secondary summaries.\n\n## User Reports and Anecdotal\n\nLimited anecdotal discussion on forums notes interest in peptides for brain repair post-TBI, but no verified Semax-specific TBI outcome reports tied to sources.\n\n## Evidence Summary\n\nAll direct BDNF upregulation data are preclinical (rat). Human data are limited to stroke contexts, not TBI. No human data exist for Semax in concussion or TBI recovery. Claims of support for repair pathways remain mechanistic or preclinical.\n\n---\n\nRelated:\n[Semax](/a/semax)\n\n[[embed:semax]]","ranking":"safety-first (interaction_risk/limitations), then quote-gated effective_weight","claims":[{"id":"c39","text":"Hash-chained sources verify integrity, not clinical truth. Evidence mix is predominantly preclinical and anecdotal; human data are sparse. No dosing, protocol, or treatment recommendations — catalogue only.","tier":"mechanistic","weight":0.3,"section":"limitations","slot":"limitations","interaction_risk":false,"status":"active","source_ids":[],"source_status":"unsourced","why_material":"Required constitution slot: limitations","retracted_at":null,"retraction_reason":null,"challenged_by":[],"effective_weight":0.3,"quote_gated":false},{"id":"c21","text":"2020 study on Semax (and Selank) effects on brain functional connectivity via fMRI in healthy subjects; not TBI-specific but relevant to neuro effects.","tier":"human","weight":0.8,"section":"what_is_known","slot":"what_is_known","interaction_risk":false,"status":"active","source_ids":["s18"],"source_status":"sourced","why_material":"Materialized from orphan source s18 by ledger repair","retracted_at":null,"retraction_reason":null,"challenged_by":[],"effective_weight":0.8,"quote_gated":false},{"id":"c28","text":"Not medical advice. Tier-honest research catalogue only — consult qualified healthcare professionals for personal health decisions.","tier":"human","weight":0.8,"section":"disclaimer","slot":"disclaimer","interaction_risk":false,"status":"active","source_ids":[],"source_status":"unsourced","why_material":"Required constitution slot: disclaimer","retracted_at":null,"retraction_reason":null,"challenged_by":[],"effective_weight":0.8,"quote_gated":false},{"id":"c31","text":"While concussion and TBI involve neuronal damage, the claim that endogenous BDNF levels are frequently insufficient for complete recovery is not universally accepted and may vary among individuals.","tier":"mechanistic","weight":0.4,"section":"Challenge","slot":null,"interaction_risk":false,"status":"active","source_ids":[],"source_status":"unsourced","why_material":"This challenge provides counter-evidence by suggesting that the insufficiency of endogenous BDNF for complete recovery is a contested claim, reflecting the complexity and variability in TBI and concussion recovery.","retracted_at":null,"retraction_reason":null,"challenged_by":[],"effective_weight":0.4,"quote_gated":false},{"id":"c_map_semax-tbi-concussion","text":"Combinatorial mapping (transparent): semax vs stroke-recovery — regen=0.59, degen=0.88, Δ=-0.29. Method: layer_relevance(0.60) × evidence_factor(0.85); catalog.degen_score for Stroke recovery.","tier":"system","weight":0.35,"section":"what_is_known","slot":"what_is_known","interaction_risk":false,"status":"active","source_ids":[],"source_status":"unsourced","retracted_at":null,"retraction_reason":null,"challenged_by":[],"effective_weight":0.35,"quote_gated":false},{"id":"c38","text":"Semax for TBI and Concussion: Evidence Review is catalogued in this miscsubjects ledger as a tier-honest evidence graph (claims + hash-chained sources). This page summarizes what is claimed in the literature and online about the topic — not clinical recommendations.","tier":"system","weight":0.35,"section":"what_it_is","slot":"what_it_is","interaction_risk":false,"status":"active","source_ids":[],"source_status":"unsourced","why_material":"Required constitution slot: what_it_is","retracted_at":null,"retraction_reason":null,"challenged_by":[],"effective_weight":0.35,"quote_gated":false},{"id":"c6","text":"Human stroke studies show Semax increased plasma BDNF and correlated with rehabilitation outcomes.","tier":"human","weight":0.8,"section":"mechanism","slot":"mechanism","interaction_risk":false,"status":"active","source_ids":["s3"],"source_status":"sourced","why_material":"Only available human evidence, distinct from TBI.","retracted_at":null,"retraction_reason":null,"challenged_by":[],"effective_weight":0.22,"quote_gated":true},{"id":"c2","text":"Semax upregulates BDNF expression and 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Especially Semax Amidate stronger.","summary":"User anecdote of significant memory recovery after TBI/concussion using Semax nasal spray, with comments from others reporting similar benefits or experiences.","claim_ids":["c8","c30"],"link_status":"ok","quote_status":"unverified","hash":"16a1c0918204a004509af3add1a4cf5470d5a843991f4d82070e44bbc1890403"},{"id":"s6","type":"medical","url":"https://www.helimeds.com/blog/semax-dosage","title":"Semax Peptide Dosage Guide: Benefits, Safety & Best Practices","quote":"In Russia and Eastern Europe, semax peptide is approved for acute ischemic stroke recovery and traumatic brain injury support.","summary":"2026 article noting Semax approval and use for TBI support in Russia/Eastern Europe, with dosing info.","claim_ids":["c9"],"link_status":"ok","quote_status":"verified","hash":"0966703329b95fa80f8379df520d16b9a5109b9a6d3177d4de285c5182772020"},{"id":"s7","type":"youtube","url":"https://youtube.com/shorts/2VRcuW5aF1Y","title":"Potential TBI & Stroke Recovery Compound #shorts","quote":"Originally studied in Russia, intranasal Semax , a 7-amino acid peptide, showed promise in helping patients recover faster after TBI and stroke.","summary":"Short video highlighting Semax research for faster recovery after TBI and stroke.","claim_ids":["c10","c30"],"link_status":"ok","quote_status":"unverified","hash":"d693881cf3df2f58adba369645f4af32643839cadf80a78b62a16d8083bd272a"},{"id":"s8","type":"other","url":"https://peptideslabuk.com/semax-and-traumatic-brain-injury-research-neuroprotection-neuroinflammation-and-tbi-biology-uk-2026/","title":"Semax and Traumatic Brain Injury Research","quote":"In ischaemia and TBI models, semax treatment has been associated with reduced pro-inflammatory cytokine expression in peri-lesional tissue and ...","summary":"2026 article examining Semax research in TBI models, focusing on neuroprotection and reduced inflammation.","claim_ids":["c5"],"link_status":"ok","quote_status":"unverified","hash":"e650c8ae9f6dd7832edf44444399df70327e9cd4577e7bf9d56f47c9ad7d1af6"},{"id":"s9","type":"pubmed","url":"https://pubmed.ncbi.nlm.nih.gov/28255762/","title":"Semax, an analog of ACTH(4-7), regulates expression of immune response genes during ischemic brain injury in rats","quote":"Consisting of the ACTH(4-7) fragment and the tripeptide Pro-Gly-Pro (PGP), the synthetic peptide Semax effectively protects brain against ischemic stroke.","summary":"2017 study on Semax regulating immune genes in rat ischemic brain injury model, relevant to neuroprotection in brain injury contexts.","claim_ids":["c12"],"link_status":"ok","quote_status":"unverified","hash":"fa0c78581fe7df79647038318320db19f2d7a5e7db6d11852ef25b7acb95aba6"},{"id":"s10","type":"review","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC11314487/","title":"Mitigating Traumatic Brain Injury: A Narrative Review of Supplementation and Dietary Protocols","quote":"However, to this day, there is no human data on the use of semax in TBI patients.","summary":"2024 narrative review notes lack of human clinical data for Semax in TBI despite preclinical interest.","claim_ids":["c5"],"link_status":"ok","quote_status":"verified","hash":"99a23eeb2cef71e361ec05e35e86a26e35083d2e0d2affdca99058d83b7afb13"},{"id":"s11","type":"medical","url":"https://www.paragonsportsmedicine.com/peptides/semax","title":"Semax Peptide | Focus & Brain Support","quote":"TBI Recovery Enhancement: Research indicates significant benefits in: Accelerated recovery from mild to moderate traumatic brain injury. Improved cognitive function restoration following head trauma.","summary":"Clinic page details Semax mechanisms and claimed benefits for TBI rehabilitation based on research.","claim_ids":["c5"],"link_status":"ok","quote_status":"unverified","hash":"258a0741856f398065ab125336992bd31e7510755c62c5b6ee73156024a2ff85"},{"id":"s12","type":"medical","url":"https://newtropin.com/peptides/semax","title":"Semax Peptide: Mechanisms, Research & Clinical Overview","quote":"Preclinical investigations of Semax in traumatic brain injury (TBI) models have demonstrated reductions in cerebral edema, inflammatory markers, and cell death in perilesional tissue.","summary":"2026 overview of Semax research including preclinical TBI findings and note on limited human TBI data.","claim_ids":["c5"],"link_status":"ok","quote_status":"verified","hash":"8627a2ebd1893617f9361dfc62d280cfbe9afa3f52d60b06d6c002ac348fe1c1"},{"id":"s13","type":"reddit","url":"https://www.reddit.com/r/Nootropics/comments/1kqgnxi/recommended_nootropics_post_traumatic_brain_injury/","title":"Recommended nootropics post traumatic brain injury","quote":"Semax is one of the go-to's for an actual brain injury. Could also use stuff like piracetam/ nooptept as well for the NGF/BDNF benefits","summary":"Reddit user recommends Semax for TBI recovery citing nerve repair potential.","claim_ids":["c16","c30"],"link_status":"ok","quote_status":"unverified","hash":"e0096967c50c56280b4c06ef13b352355ba9a4f49aa41bb0ca763d1c0c2d625b"},{"id":"s14","type":"reddit","url":"https://www.reddit.com/r/Semax/comments/1qde113/trying_semax_for_recovery_from_multiple_tbis_and/","title":"Trying Semax for recovery from multiple TBI's and former drug/alcohol abuse","quote":"Trying Semax for recovery from multiple TBI's and former drug/alcohol abuse. Advice, data, anecdotes and protocols welcome.","summary":"Reddit post seeking experiences with Semax for multiple TBI recovery.","claim_ids":["c17"],"link_status":"ok","quote_status":"unverified","hash":"47a5c78bbfaa8dd69a8ed718b6ac98e38b30c47e60acd92242bd0f5f7b06a7cf"},{"id":"s15","type":"reddit","url":"https://www.reddit.com/r/Cerebrolysin/comments/1fq88zm/ive_been_using_cerebrolysin_and_semax_to_recover/","title":"I've been using cerebrolysin and semax to recover from a TBI and concussion","quote":"I've been using cerebrolysin and semax to recover from a TBI and concussion for the past few days (it's working very well)","summary":"Anecdotal report of positive effects from Semax (with Cerebrolysin) for recent TBI/concussion recovery.","claim_ids":["c18"],"link_status":"ok","quote_status":"unverified","hash":"764c643eebd6f7e6b4128295e3a6f7b58701afa5b98f158de6ab1541b1fcb13e"},{"id":"s16","type":"reddit","url":"https://www.reddit.com/r/TBI/comments/1r2hhqw/in_the_united_states_the_focus_is_on_managing_the/","title":"In the united states, the focus is on managing the symptoms of concussions/tbi, not actually helping the brain repair itself","quote":"Ive used all 3 and for the first time in 2 years i’ve seen improvements despite doing everything else doctors have told me to do. ... 2 doses of cerebrolysin and it feels like its almost cleared up my neuroinflammation that had been causing relentless headaches, brain fog etc.","summary":"User with multiple TBIs/concussions reports positive improvements from Semax, Selank, and Cerebrolysin (first in 2 years), attributing relief from neuroinflammation, headaches, and brain fog.","claim_ids":["c19"],"link_status":"ok","quote_status":"unverified","hash":"c4c5e219b23db1cc7c990f86954678749f01021a21dec014acb3d8fe4d0eb627"},{"id":"s17","type":"reddit","url":"https://www.reddit.com/r/TBI/comments/1trfom1/breakdowns_breakthroughs/","title":"Breakdowns & breakthroughs","quote":"I just started semax/selank and fell like it's helping. Have you tried these peptides? How do you administer them? I use the nasal spray amd thinking about IV route.","summary":"TBI patient comment states they just started Semax/Selank nasal spray and feel it is helping; asks about administration options.","claim_ids":["c20"],"link_status":"ok","quote_status":"unverified","hash":"d32d54ae790c8acdbfaccd71f8333dde296ea6588a41fa0286fe212b1f0c5507"},{"id":"s18","type":"pubmed","url":"https://pubmed.ncbi.nlm.nih.gov/32342318/","title":"Functional Connectomic Approach to Studying Selank and Semax Effects","quote":"The present study was aimed at the assessment of effects of anxiolytic Selank and nootropic Semax on the whole-brain resting-state functional connectivity (FC) of each of the predefined regions of interest (ROIs) in 52 healthy participants.","summary":"2020 study on Semax (and Selank) effects on brain functional connectivity via fMRI in healthy subjects; not TBI-specific but relevant to neuro effects.","claim_ids":["c21"],"link_status":"ok","quote_status":"verified","hash":"b499716356b555f3172e79777e1007ef5f7d679d26a90d762fafa7e322db0429"},{"id":"s19","type":"reddit","url":"https://www.reddit.com/r/Semax/comments/1d4jbyf/using_semax_for_concussion_recovery/","title":"Using Semax for CONCUSSION RECOVERY","quote":"There is evidence suggesting that Semax may accelerate recovery from brain injuries by promoting neurogenesis and synaptic plasticity.","summary":"2024 Reddit post and comments discussing personal use/experience of Semax for post-concussion recovery, with users recommending it alongside other peptides.","claim_ids":["c22"],"link_status":"ok","quote_status":"unverified","hash":"3bb60aa9d4147c335716a0c6dbb1c6d1740ff4a063ec42a543f60bb461d81cec"},{"id":"s20","type":"medical","url":"https://revivecolorado.net/semax-for-brain-health-neuroprotection-and-recovery-support/","title":"Semax for Brain Health: Neuroprotection and Recovery Support","quote":"Following TBI, Semax’s ability to reduce inflammation, support neuronal survival, and enhance BDNF may aid the recovery process. While more research is needed, preliminary evidence suggests peptide therapy could support healing and potentially reduce long-term consequences of brain injury.","summary":"Clinic article detailing Semax mechanisms and potential for TBI/concussion/post-concussion syndrome recovery via neuroprotection, anti-inflammation, and BDNF upregulation.","claim_ids":["c5"],"link_status":"ok","quote_status":"unverified","hash":"f5a5461c12932ff980fb3fadc63feb107ce57617796db6185d0b858a23d47d29"},{"id":"s21","type":"reddit","url":"https://www.reddit.com/r/TBI/comments/1t258on/i_have_tbi_from_a_car_crash_my_child_thought_i/","title":"I have TBI from a car crash my child thought I was getting dementia. I take Semax nasal spray has been life changing miraculous","quote":"I have TBI from a car crash my child thought I was getting dementia. I take Semax nasal spray has been life changing miraculous.","summary":"Original post claiming positive, life-changing effect of Semax nasal spray for TBI symptoms including memory/dementia-like issues (anecdotal, not advice).","claim_ids":["c32"],"link_status":"ok","quote_status":"unverified","hash":"554e3af577436cb198de6678e4edf8720fe6b5e50de6a3547debc59b083981fd"},{"id":"s22","type":"reddit","url":"https://www.reddit.com/r/PostConcussion/comments/1srz832/headaches_will_they_ever_go_away/","title":"headaches will they ever go away?","quote":"dose creatine (10-20mg/day) and semax /selank/cerebrolysin. Only things that have helped me.","summary":"Comment reporting Semax (with others) helped with post-concussion headaches (anecdotal, not advice).","claim_ids":["c33"],"link_status":"ok","quote_status":"unverified","hash":"6bd956d04bac30442ac2602d06a78159ea8701a5b7d662bd0804bce63e23aa2e"},{"id":"s23","type":"reddit","url":"https://www.reddit.com/r/Ultramarathon/comments/1srblv6/post100_brain_fogconcussion/","title":"Post-100 Brain Fog/Concussion","quote":"Not a doctor and not advise, just what has worked amazing for me: Peptides. Daily NAD+ 25mg. Semax 5 days/ wk 500-1000mcg ... My TBI / concussion was 10ish years ...","summary":"Comment with dosing anecdote (500-1000mcg Semax 5 days/week) claimed to help long-term TBI/concussion brain fog (anecdotal, not advice).","claim_ids":["c34"],"link_status":"ok","quote_status":"unverified","hash":"194150aa607af131efafd0a2a45267aeb55043bbb5dcdaae6ed6eb4ad4cee5e6"},{"id":"s24","type":"reddit","url":"https://www.reddit.com/r/Nootropics/comments/7rh3bh/tried_semax_now_my_hair_is_falling_out/","title":"Tried Semax, now my hair is falling out","quote":"I started Semax on Tuesday in an attempt to treat my concussion. I ordered the 600mcg regular Semax nasal spray and sprayed three times a day - in retrospect a hugely dumb idea, but I had heard that was approximately the dose for concussion treatment. Tonight, Thursday night, I noticed that my hairline looked slightly different. ... my hair was falling out around my temples.","summary":"OP reports rapid hair loss side effect after high-dose Semax (1800mcg/day nasal) intended for concussion (anecdotal; many comments discuss possible telogen effluvium or BDNF link, some regrowth reports after stopping).","claim_ids":["c35"],"link_status":"ok","quote_status":"unverified","hash":"7b9910845f0b66d746b2bdc58c7cc449ff50ad3d12d014edb13479434bc0bb56"},{"id":"s25","type":"reddit","url":"https://www.reddit.com/r/Biohackers/comments/1k06ld7/recommendations_for_tbiconcussions/","title":"Recommendations for tbi/concussions?","quote":"You may also want to look into more hardcore options like Cerebrolysin, P21, Dihexa or Semax. Cerebrolysin is probably the best all around peptide for healing the brain but it involves injecting high volumes intramuscularly. ... The last two peptides are much more mild but can also be used to treat TBI.","summary":"Comment recommending Semax (and others) for TBI recovery, noting it as milder option (anecdotal, not advice).","claim_ids":["c36"],"link_status":"ok","quote_status":"unverified","hash":"5d2692a98bcc624219154079e2277c0e559fb1124b2d81283165d8e6bd033e13"},{"id":"s26","type":"reddit","url":"https://www.reddit.com/r/TBI/comments/1tnaxpi/does_it_get_better/","title":"Does it get better?","quote":"(physio) Osteopath released cranial fluid - neurotherapy and Semax have helped a lot.","summary":"Comment claiming Semax helped with TBI recovery alongside other therapies (anecdotal, not advice).","claim_ids":["c37"],"link_status":"ok","quote_status":"unverified","hash":"7749ac2117e8a0c2fa92f3e4f8ea43477051c1d11e0a1db3a7dbd3a66c2c14b5"}],"anecdotal_sources":[{"id":"s5","type":"reddit","url":"https://www.reddit.com/r/TBI/comments/1t25t3z/semax_nasal_spray_life_changing_have_my_memory/","title":"Semax nasal spray life changing have my memory back","quote":"Semax nasal spray life changing have my memory back... I was like Dory it was very scary - now not an issue. Especially Semax Amidate stronger.","summary":"User anecdote of significant memory recovery after TBI/concussion using Semax nasal spray, with comments from others reporting similar benefits or experiences.","claim_ids":["c8","c30"],"link_status":"ok","quote_status":"unverified","hash":"16a1c0918204a004509af3add1a4cf5470d5a843991f4d82070e44bbc1890403"},{"id":"s7","type":"youtube","url":"https://youtube.com/shorts/2VRcuW5aF1Y","title":"Potential TBI & Stroke Recovery Compound #shorts","quote":"Originally studied in Russia, intranasal Semax , a 7-amino acid peptide, showed promise in helping patients recover faster after TBI and stroke.","summary":"Short video highlighting Semax research for faster recovery after TBI and stroke.","claim_ids":["c10","c30"],"link_status":"ok","quote_status":"unverified","hash":"d693881cf3df2f58adba369645f4af32643839cadf80a78b62a16d8083bd272a"},{"id":"s13","type":"reddit","url":"https://www.reddit.com/r/Nootropics/comments/1kqgnxi/recommended_nootropics_post_traumatic_brain_injury/","title":"Recommended nootropics post traumatic brain injury","quote":"Semax is one of the go-to's for an actual brain injury. Could also use stuff like piracetam/ nooptept as well for the NGF/BDNF benefits","summary":"Reddit user recommends Semax for TBI recovery citing nerve repair potential.","claim_ids":["c16","c30"],"link_status":"ok","quote_status":"unverified","hash":"e0096967c50c56280b4c06ef13b352355ba9a4f49aa41bb0ca763d1c0c2d625b"},{"id":"s14","type":"reddit","url":"https://www.reddit.com/r/Semax/comments/1qde113/trying_semax_for_recovery_from_multiple_tbis_and/","title":"Trying Semax for recovery from multiple TBI's and former drug/alcohol abuse","quote":"Trying Semax for recovery from multiple TBI's and former drug/alcohol abuse. Advice, data, anecdotes and protocols welcome.","summary":"Reddit post seeking experiences with Semax for multiple TBI recovery.","claim_ids":["c17"],"link_status":"ok","quote_status":"unverified","hash":"47a5c78bbfaa8dd69a8ed718b6ac98e38b30c47e60acd92242bd0f5f7b06a7cf"},{"id":"s15","type":"reddit","url":"https://www.reddit.com/r/Cerebrolysin/comments/1fq88zm/ive_been_using_cerebrolysin_and_semax_to_recover/","title":"I've been using cerebrolysin and semax to recover from a TBI and concussion","quote":"I've been using cerebrolysin and semax to recover from a TBI and concussion for the past few days (it's working very well)","summary":"Anecdotal report of positive effects from Semax (with Cerebrolysin) for recent TBI/concussion recovery.","claim_ids":["c18"],"link_status":"ok","quote_status":"unverified","hash":"764c643eebd6f7e6b4128295e3a6f7b58701afa5b98f158de6ab1541b1fcb13e"},{"id":"s16","type":"reddit","url":"https://www.reddit.com/r/TBI/comments/1r2hhqw/in_the_united_states_the_focus_is_on_managing_the/","title":"In the united states, the focus is on managing the symptoms of concussions/tbi, not actually helping the brain repair itself","quote":"Ive used all 3 and for the first time in 2 years i’ve seen improvements despite doing everything else doctors have told me to do. ... 2 doses of cerebrolysin and it feels like its almost cleared up my neuroinflammation that had been causing relentless headaches, brain fog etc.","summary":"User with multiple TBIs/concussions reports positive improvements from Semax, Selank, and Cerebrolysin (first in 2 years), attributing relief from neuroinflammation, headaches, and brain fog.","claim_ids":["c19"],"link_status":"ok","quote_status":"unverified","hash":"c4c5e219b23db1cc7c990f86954678749f01021a21dec014acb3d8fe4d0eb627"},{"id":"s17","type":"reddit","url":"https://www.reddit.com/r/TBI/comments/1trfom1/breakdowns_breakthroughs/","title":"Breakdowns & breakthroughs","quote":"I just started semax/selank and fell like it's helping. Have you tried these peptides? How do you administer them? I use the nasal spray amd thinking about IV route.","summary":"TBI patient comment states they just started Semax/Selank nasal spray and feel it is helping; asks about administration options.","claim_ids":["c20"],"link_status":"ok","quote_status":"unverified","hash":"d32d54ae790c8acdbfaccd71f8333dde296ea6588a41fa0286fe212b1f0c5507"},{"id":"s19","type":"reddit","url":"https://www.reddit.com/r/Semax/comments/1d4jbyf/using_semax_for_concussion_recovery/","title":"Using Semax for CONCUSSION RECOVERY","quote":"There is evidence suggesting that Semax may accelerate recovery from brain injuries by promoting neurogenesis and synaptic plasticity.","summary":"2024 Reddit post and comments discussing personal use/experience of Semax for post-concussion recovery, with users recommending it alongside other peptides.","claim_ids":["c22"],"link_status":"ok","quote_status":"unverified","hash":"3bb60aa9d4147c335716a0c6dbb1c6d1740ff4a063ec42a543f60bb461d81cec"},{"id":"s21","type":"reddit","url":"https://www.reddit.com/r/TBI/comments/1t258on/i_have_tbi_from_a_car_crash_my_child_thought_i/","title":"I have TBI from a car crash my child thought I was getting dementia. I take Semax nasal spray has been life changing miraculous","quote":"I have TBI from a car crash my child thought I was getting dementia. I take Semax nasal spray has been life changing miraculous.","summary":"Original post claiming positive, life-changing effect of Semax nasal spray for TBI symptoms including memory/dementia-like issues (anecdotal, not advice).","claim_ids":["c32"],"link_status":"ok","quote_status":"unverified","hash":"554e3af577436cb198de6678e4edf8720fe6b5e50de6a3547debc59b083981fd"},{"id":"s22","type":"reddit","url":"https://www.reddit.com/r/PostConcussion/comments/1srz832/headaches_will_they_ever_go_away/","title":"headaches will they ever go away?","quote":"dose creatine (10-20mg/day) and semax /selank/cerebrolysin. Only things that have helped me.","summary":"Comment reporting Semax (with others) helped with post-concussion headaches (anecdotal, not advice).","claim_ids":["c33"],"link_status":"ok","quote_status":"unverified","hash":"6bd956d04bac30442ac2602d06a78159ea8701a5b7d662bd0804bce63e23aa2e"},{"id":"s23","type":"reddit","url":"https://www.reddit.com/r/Ultramarathon/comments/1srblv6/post100_brain_fogconcussion/","title":"Post-100 Brain Fog/Concussion","quote":"Not a doctor and not advise, just what has worked amazing for me: Peptides. Daily NAD+ 25mg. Semax 5 days/ wk 500-1000mcg ... My TBI / concussion was 10ish years ...","summary":"Comment with dosing anecdote (500-1000mcg Semax 5 days/week) claimed to help long-term TBI/concussion brain fog (anecdotal, not advice).","claim_ids":["c34"],"link_status":"ok","quote_status":"unverified","hash":"194150aa607af131efafd0a2a45267aeb55043bbb5dcdaae6ed6eb4ad4cee5e6"},{"id":"s24","type":"reddit","url":"https://www.reddit.com/r/Nootropics/comments/7rh3bh/tried_semax_now_my_hair_is_falling_out/","title":"Tried Semax, now my hair is falling out","quote":"I started Semax on Tuesday in an attempt to treat my concussion. I ordered the 600mcg regular Semax nasal spray and sprayed three times a day - in retrospect a hugely dumb idea, but I had heard that was approximately the dose for concussion treatment. Tonight, Thursday night, I noticed that my hairline looked slightly different. ... my hair was falling out around my temples.","summary":"OP reports rapid hair loss side effect after high-dose Semax (1800mcg/day nasal) intended for concussion (anecdotal; many comments discuss possible telogen effluvium or BDNF link, some regrowth reports after stopping).","claim_ids":["c35"],"link_status":"ok","quote_status":"unverified","hash":"7b9910845f0b66d746b2bdc58c7cc449ff50ad3d12d014edb13479434bc0bb56"},{"id":"s25","type":"reddit","url":"https://www.reddit.com/r/Biohackers/comments/1k06ld7/recommendations_for_tbiconcussions/","title":"Recommendations for tbi/concussions?","quote":"You may also want to look into more hardcore options like Cerebrolysin, P21, Dihexa or Semax. Cerebrolysin is probably the best all around peptide for healing the brain but it involves injecting high volumes intramuscularly. ... The last two peptides are much more mild but can also be used to treat TBI.","summary":"Comment recommending Semax (and others) for TBI recovery, noting it as milder option (anecdotal, not advice).","claim_ids":["c36"],"link_status":"ok","quote_status":"unverified","hash":"5d2692a98bcc624219154079e2277c0e559fb1124b2d81283165d8e6bd033e13"},{"id":"s26","type":"reddit","url":"https://www.reddit.com/r/TBI/comments/1tnaxpi/does_it_get_better/","title":"Does it get better?","quote":"(physio) Osteopath released cranial fluid - neurotherapy and Semax have helped a lot.","summary":"Comment claiming Semax helped with TBI recovery alongside other therapies (anecdotal, not advice).","claim_ids":["c37"],"link_status":"ok","quote_status":"unverified","hash":"7749ac2117e8a0c2fa92f3e4f8ea43477051c1d11e0a1db3a7dbd3a66c2c14b5"}],"scientific_sources":[{"id":"s1","type":"pubmed","url":"https://pubmed.ncbi.nlm.nih.gov/16635254/","title":"Semax, an analogue of adrenocorticotropin (4-10), binds specifically and increases levels of brain-derived neurotrophic factor protein in rat basal forebrain","quote":"Semax stimulates the synthesis of brain-derived neurotrophic factor (BDNF)... in astrocytes cultured from rat basal forebrain.","summary":"Rat cell study showing Semax increases BDNF protein.","claim_ids":["c2","c3","c29"],"link_status":"ok","quote_status":"unverified","hash":"5ffc19a28b5ce764b3ff4669d432ff3432e3b1bad4b2a2114a0f90eae4c98b56"},{"id":"s2","type":"pubmed","url":"https://pubmed.ncbi.nlm.nih.gov/17011525/","title":"Semax, an analog of ACTH(4–10) with cognitive effects, regulates BDNF and trkB expression in the rat hippocampus","quote":"a single application of Semax (50 μg/kg body weight) results in a maximal 1.4-fold increase of BDNF protein levels accompanying with 1.6-fold increase of trkB tyrosine phosphorylation levels...","summary":"Rat hippocampal study quantifying BDNF/TrkB effects.","claim_ids":["c4"],"link_status":"ok","quote_status":"unverified","hash":"9ecaf26bd2e31117f0cbb6afc9e17b5c38a73f483fe9f5f723126283332bd865"},{"id":"s3","type":"pubmed","url":"https://pubmed.ncbi.nlm.nih.gov/11517472/","title":"[Effectiveness of semax in acute period of hemispheric stroke]","quote":"Efficiency of Semax... was studied in 30 patients in acute period of hemispherical ischemic stroke.","summary":"Human stroke trial; related but not TBI.","claim_ids":["c6"],"link_status":"ok","quote_status":"unverified","hash":"a5b8f8897907605a0100e146280cee6b56b045bff3a796c8e8caa5db52221082"},{"id":"s4","type":"medical","url":"https://peptpedia.org/peptide/semax","title":"Semax: Mechanism, Effects & Research Studies","quote":"Robust research demonstrates Semax provides significant protection against neural damage from multiple insults including ischemia (stroke), oxidative stress, neurotoxin exposure, and traumatic brain injury.","summary":"Details Semax's neuroprotective effects including for TBI, with references to Russian clinical data on brain injury recovery and BDNF/NGF upregulation.","claim_ids":["c5"],"link_status":"ok","quote_status":"verified","hash":"d49cbbb95ea99e78ca7532c5dd9a41f7c4c96ed19a5ee34f2dbf372ce471723c"},{"id":"s6","type":"medical","url":"https://www.helimeds.com/blog/semax-dosage","title":"Semax Peptide Dosage Guide: Benefits, Safety & Best Practices","quote":"In Russia and Eastern Europe, semax peptide is approved for acute ischemic stroke recovery and traumatic brain injury support.","summary":"2026 article noting Semax approval and use for TBI support in Russia/Eastern Europe, with dosing info.","claim_ids":["c9"],"link_status":"ok","quote_status":"verified","hash":"0966703329b95fa80f8379df520d16b9a5109b9a6d3177d4de285c5182772020"},{"id":"s9","type":"pubmed","url":"https://pubmed.ncbi.nlm.nih.gov/28255762/","title":"Semax, an analog of ACTH(4-7), regulates expression of immune response genes during ischemic brain injury in rats","quote":"Consisting of the ACTH(4-7) fragment and the tripeptide Pro-Gly-Pro (PGP), the synthetic peptide Semax effectively protects brain against ischemic stroke.","summary":"2017 study on Semax regulating immune genes in rat ischemic brain injury model, relevant to neuroprotection in brain injury contexts.","claim_ids":["c12"],"link_status":"ok","quote_status":"unverified","hash":"fa0c78581fe7df79647038318320db19f2d7a5e7db6d11852ef25b7acb95aba6"},{"id":"s10","type":"review","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC11314487/","title":"Mitigating Traumatic Brain Injury: A Narrative Review of Supplementation and Dietary Protocols","quote":"However, to this day, there is no human data on the use of semax in TBI patients.","summary":"2024 narrative review notes lack of human clinical data for Semax in TBI despite preclinical interest.","claim_ids":["c5"],"link_status":"ok","quote_status":"verified","hash":"99a23eeb2cef71e361ec05e35e86a26e35083d2e0d2affdca99058d83b7afb13"},{"id":"s11","type":"medical","url":"https://www.paragonsportsmedicine.com/peptides/semax","title":"Semax Peptide | Focus & Brain Support","quote":"TBI Recovery Enhancement: Research indicates significant benefits in: Accelerated recovery from mild to moderate traumatic brain injury. Improved cognitive function restoration following head trauma.","summary":"Clinic page details Semax mechanisms and claimed benefits for TBI rehabilitation based on research.","claim_ids":["c5"],"link_status":"ok","quote_status":"unverified","hash":"258a0741856f398065ab125336992bd31e7510755c62c5b6ee73156024a2ff85"},{"id":"s12","type":"medical","url":"https://newtropin.com/peptides/semax","title":"Semax Peptide: Mechanisms, Research & Clinical Overview","quote":"Preclinical investigations of Semax in traumatic brain injury (TBI) models have demonstrated reductions in cerebral edema, inflammatory markers, and cell death in perilesional tissue.","summary":"2026 overview of Semax research including preclinical TBI findings and note on limited human TBI data.","claim_ids":["c5"],"link_status":"ok","quote_status":"verified","hash":"8627a2ebd1893617f9361dfc62d280cfbe9afa3f52d60b06d6c002ac348fe1c1"},{"id":"s18","type":"pubmed","url":"https://pubmed.ncbi.nlm.nih.gov/32342318/","title":"Functional Connectomic Approach to Studying Selank and Semax Effects","quote":"The present study was aimed at the assessment of effects of anxiolytic Selank and nootropic Semax on the whole-brain resting-state functional connectivity (FC) of each of the predefined regions of interest (ROIs) in 52 healthy participants.","summary":"2020 study on Semax (and Selank) effects on brain functional connectivity via fMRI in healthy subjects; not TBI-specific but relevant to neuro effects.","claim_ids":["c21"],"link_status":"ok","quote_status":"verified","hash":"b499716356b555f3172e79777e1007ef5f7d679d26a90d762fafa7e322db0429"},{"id":"s20","type":"medical","url":"https://revivecolorado.net/semax-for-brain-health-neuroprotection-and-recovery-support/","title":"Semax for Brain Health: Neuroprotection and Recovery Support","quote":"Following TBI, Semax’s ability to reduce inflammation, support neuronal survival, and enhance BDNF may aid the recovery process. While more research is needed, preliminary evidence suggests peptide therapy could support healing and potentially reduce long-term consequences of brain injury.","summary":"Clinic article detailing Semax mechanisms and potential for TBI/concussion/post-concussion syndrome recovery via neuroprotection, anti-inflammation, and BDNF upregulation.","claim_ids":["c5"],"link_status":"ok","quote_status":"unverified","hash":"f5a5461c12932ff980fb3fadc63feb107ce57617796db6185d0b858a23d47d29"}],"user_reports":[],"related_articles":[{"slug":"semax","title":"Semax: BDNF Upregulation","claims":[{"id":"c1","text":"In rat hippocampus, a single intranasal dose of Semax (50 μg/kg) produced a maximal 1.4-fold increase in BDNF protein levels, accompanied by increased trkB phosphorylation and mRNA expression.","tier":"preclinical"},{"id":"c2","text":"In a study of 110 patients after ischemic stroke, Semax increased plasma BDNF levels.","tier":"human"},{"id":"c3","text":"Commercial vendors and clinics market this compound (5 commercial/clinic sources catalogued) — marketing material, not evidence.","tier":"speculative"},{"id":"c4","text":"2025 study showing Semax improves cognitive functions in transgenic Alzheimer's disease mouse model.","tier":"preclinical"},{"id":"c5","text":"2025 study on Semax for spinal cord injury recovery in mice.","tier":"preclinical"},{"id":"c6","text":"2026 review mentioning Semax in context of neuroactive peptides for orthopaedics.","tier":"human"},{"id":"c7","text":"Full text of 2025 Acta Naturae paper on Semax in AD mouse model.","tier":"speculative"},{"id":"c8","text":"User anecdote on improved focus, memory, and performance with Semax nasal spray.","tier":"anecdotal"}]}],"question_graph":{"slug":"semax-tbi-concussion","questions":[],"evidence":[{"ingest_id":"ev_2abbbcbb1b76","ts":"2026-06-29T14:06:52.231Z","slug":"semax-tbi-concussion","question_node_id":null,"channel":"collaborate","author":"kimi/moonshot-v1-8k","summary":"As collaborator #1 on the miscsubjects peptide evidence ledger, I am adding explicit claims about gaps in knowledge and naming sources of anecdotal claims where they are not explicitly stated. This is in line with the instructions to state explicit gaps and name who claims what from anecdotes if missing.","source_ids":[],"claim_ids":["c29","c30"],"model":"kimi/moonshot-v1-8k","hash":"2d48cf4992995068591081e29f9f7e8ff874a9e547afbb660eeae336f5bd0799","status":"promoted"}],"edges":[],"counts":{"questions":0,"evidence":1,"edges":0}},"honesty":{"active_claims":30,"retracted_claims":0,"cut_claims":0,"challenges":1,"scrub_events":0,"note":"Retracted/cut claims stay on ledger but are excluded from ask unless ?include_inactive=1"},"counts":{"claims":30,"claims_total":30,"sources":26,"anecdotal":14,"scientific":11,"user_reports":0,"questions":0,"evidence_ingests":1}}