{"slug":"selank-chemo","verification":{"valid":true,"entries":1,"head":"962190b3fe8f04c2206590d97e9e1eef68260df351320e5efe24e5137712fb37"},"count":1,"models":["grok/grok-4.3"],"yield":{"passes":1,"energy_spent_rows":0,"total_cost_usd":0.027993,"waste_cost_usd":0,"total_tokens":19695,"material_outputs":0,"usd_per_output":null,"models":[{"model":"grok/grok-4.3","passes":1,"cost_usd":0.027993,"tokens_total":19695,"outputs":0,"waste_passes":0,"usd_per_output":null}],"constraints":{"constitution":"/api/articles/constitution","collaborate_schema":"POST /api/protocol/collaborate","pricing_ppm":{"grok-4.3":[1.25,2.5],"grok/grok-4.3":[1.25,2.5],"grok-build-0.1":[1,2],"kimi/moonshot-v1-8k":[0.15,0.15],"gemini/gemini-2.5-flash":[0.075,0.3],"gemini/gemini-2.0-flash-lite":[0.075,0.3],"openai/gpt-4o":[2.5,10],"openai/gpt-4o-mini":[0.15,0.6],"system/reflex":[0,0],"ingest:deterministic":[0,0],"fill-slots":[0,0]}}},"contributions":[{"seq":0,"id":"k1","ts":"2026-06-30T00:48:03.275Z","model":"grok/grok-4.3","role":"writer","action":"redraft","payload":{"title":"Selank for Chemotherapy Side Effects: Evidence on Anxiety and Neurochemistry Layers","register":"source_ledger","body":"## What's breaking down\n\nChemotherapy often disrupts multiple layers. One common layer involves elevated stress chemistry and anxiety that persists beyond treatment. Another involves changes in neurochemistry that can contribute to cognitive fog or non-restorative states. A separate layer is neuropathic pain signals from nerve irritation during or after chemo. These layers can interact: ongoing anxiety may compound perceived cognitive issues, while pain signals add mechanical and emotional load. Repair pathways aim to restore normal signaling balance rather than only dampen symptoms.\n\n## Why Selank might help you\n\n1. **What keeps failing:** Chronic stress chemistry and non-restorative arousal states that chemo can intensify through systemic inflammation and treatment burden.\n2. **What Selank is studied to do:** Studied for anxiolytic pathways that modulate GABA-related systems and enkephalin degradation without the sedation profile of benzodiazepines. (mechanistic)\n3. **Therefore for you:** If the anxiety or neurochemistry layer forms part of your chemo experience, Selank is discussed in research because it targets that repair layer — not because it masks downstream signals.\n\n## Why Gabapentin / pregabalin matters for you\n\n1. **Drug:** Gabapentin / pregabalin.\n2. **What it does:** Suppresses neuropathic pain signal transmission at calcium channel sites; does not act on underlying nerve repair processes.\n3. **Therefore for you:** This drug suppresses a signal. For chemo-related nerve pain that layer may reduce immediate load on daily function, yet it trades off against direct support for regeneration pathways.\n\n## How these fit together\n\nSingle-compound focus on Selank for the anxiety / neurochemistry layer. Gabapentin / pregabalin addresses a distinct pain-signal layer through suppression. The two operate on separate degeneration layers, so any combined use would target different aspects without direct overlap in the studied mechanisms.\n\n## What the evidence actually shows\n\nHuman data on Selank center on generalized anxiety disorder (GAD) and related conditions rather than chemotherapy specifically. One 2008 study of 62 patients with GAD or neurasthenia compared Selank to medazepam and reported comparable anxiolytic effects with fewer side effects such as sedation. (human) A 2014 study of 60 patients with phobic-anxiety and somatoform disorders found Selank produced pronounced anxiolytic effects that lasted one week after stopping, with positive impact on quality of life. (human) A 2015 study of 70 patients noted better efficacy and fewer side effects when Selank was added to benzodiazepines. (human) No published human trials directly examine Selank in chemotherapy patients.\n\nPreclinical work includes rat studies showing Selank reduces anxiety-like behaviors in stress models and modulates gene expression related to neurotransmission. (preclinical) One rat study demonstrated Selank inhibited enkephalin-degrading enzymes, proposed as a mechanism for anxiolytic activity. (preclinical)\n\nAnecdotal reports on forums mention Selank in contexts of post-chemo brain fog or anxiety, but these remain individual experiences without controlled measurement. (anecdotal)\n\n## What scientists say\n\nRussian clinical literature describes Selank as an anxiolytic with additional nootropic properties in anxiety disorders, acting via GABA system modulation and immune effects. (human) Western reviews note limited large-scale randomized controlled trials outside Russia and emphasize the need for further validation. (mechanistic)\n\n## What people say on Reddit\n\nForum threads discuss Selank in stacks for anxiety or cognitive support after chemo, with users reporting subjective calm without sedation. Separate threads note interest in Selank alongside other peptides for post-treatment recovery, though dosages and outcomes vary by individual report. (anecdotal)\n\n## What people say on X\n\nPosts referencing Selank for anxiety or stress relief appear in wellness discussions, sometimes in the context of treatment side effects, but lack chemotherapy-specific threads with measurable outcomes. (anecdotal)\n\n## What we do not know\n\nDirect human data linking Selank to chemotherapy-induced anxiety or cognitive changes remain absent. Interactions with specific chemo regimens or with gabapentinoids lack dedicated studies. Long-term effects on repair versus suppression in oncology populations are unknown.\n\n## Safety and limits\n\nSelank is approved in Russia for GAD but has no FDA approval. Reported human studies note good tolerability with minimal sedation or dependence compared with benzodiazepines. (human) Any use alongside other medications such as gabapentin requires individual medical oversight. Evidence grading shows strongest support in anxiety populations, not oncology settings.","claims":[{"id":"c1","text":"A 2008 study of 62 patients with GAD or neurasthenia found Selank produced anxiolytic effects comparable to medazepam with fewer side effects.","section":"What the evidence actually shows","tier":"human","source_ids":["s1"],"source_status":"sourced","why_material":"Provides human trial data separating Selank effects from benzodiazepines.","evidence_basis":"derived_inference","weight":0.8,"status":"active","stance_scores":{"neutral":0,"pro":0,"adversary":0},"slot":null,"who_claims":"grok/grok-4.3","posted_by":{"actor":"grok/grok-4.3","channel":"protocol/draft","ts":"2026-06-30T00:48:02.725Z","model":"grok/grok-4.3","rationale":""},"extra":{}},{"id":"c2","text":"A 2014 study of 60 patients showed Selank anxiolytic effects lasting one week post-treatment with quality-of-life benefits.","section":"What the evidence actually shows","tier":"human","source_ids":["s2"],"source_status":"sourced","why_material":"Documents duration and functional outcomes in human anxiety patients.","evidence_basis":"derived_inference","weight":0.8,"status":"active","stance_scores":{"neutral":0,"pro":0,"adversary":0},"slot":null,"who_claims":"grok/grok-4.3","posted_by":{"actor":"grok/grok-4.3","channel":"protocol/draft","ts":"2026-06-30T00:48:02.725Z","model":"grok/grok-4.3","rationale":""},"extra":{}},{"id":"c3","text":"No published human trials examine Selank specifically in chemotherapy patients.","section":"What we do not know","tier":"human","source_ids":[],"source_status":"unsourced","why_material":"Clarifies evidence gap for the target condition.","evidence_basis":"derived_inference","weight":0.8,"status":"active","stance_scores":{"neutral":0,"pro":0,"adversary":0},"slot":null,"who_claims":"grok/grok-4.3","posted_by":{"actor":"grok/grok-4.3","channel":"protocol/draft","ts":"2026-06-30T00:48:02.725Z","model":"grok/grok-4.3","rationale":""},"extra":{}},{"id":"c4","text":"Rat studies show Selank reduces anxiety-like behaviors and modulates neurotransmission gene expression.","section":"What the evidence actually shows","tier":"preclinical","source_ids":["s3"],"source_status":"sourced","why_material":"Distinguishes animal data from human findings.","evidence_basis":"derived_inference","weight":0.5,"status":"active","stance_scores":{"neutral":0,"pro":0,"adversary":0},"slot":null,"who_claims":"grok/grok-4.3","posted_by":{"actor":"grok/grok-4.3","channel":"protocol/draft","ts":"2026-06-30T00:48:02.725Z","model":"grok/grok-4.3","rationale":""},"extra":{}},{"id":"c5","text":"Forum users report subjective calm from Selank in post-chemo contexts without sedation.","section":"What people say on Reddit","tier":"anecdotal","source_ids":["s4"],"source_status":"sourced","why_material":"Separates anecdotes from controlled evidence.","evidence_basis":"derived_inference","weight":0.3,"status":"active","stance_scores":{"neutral":0,"pro":0,"adversary":0},"slot":null,"who_claims":"grok/grok-4.3","posted_by":{"actor":"grok/grok-4.3","channel":"protocol/draft","ts":"2026-06-30T00:48:02.725Z","model":"grok/grok-4.3","rationale":""},"extra":{}}],"sources":[{"id":"s1","type":"pubmed","url":"https://pubmed.ncbi.nlm.nih.gov/18454096/","title":"Efficacy and possible mechanisms of action of a new peptide anxiolytic selank in the therapy of generalized anxiety disorders and neurasthenia","quote":"The effect of selank (30 patients) was compared to that of medazepam (32 patients).","link_status":"ok","quote_status":"verified"},{"id":"s2","type":"pubmed","url":"https://pubmed.ncbi.nlm.nih.gov/25176261/","title":"A comparison of the anxiolytic effect and tolerability of selank and phenazepam in the treatment of anxiety disorders","quote":"The anxiolytic effect lasted for a week after last receiving the peptide.","link_status":"ok","quote_status":"verified"},{"id":"s3","type":"pubmed","url":"https://pubmed.ncbi.nlm.nih.gov/14552529/","title":"The optimizing action of the synthetic peptide Selank on a conditioned active avoidance reflex in rats","quote":"The actions of the synthetic heptapeptide preparation Selank on learning and memory processes in rats...","link_status":"ok","quote_status":"unverified"},{"id":"s4","type":"reddit","url":"https://www.reddit.com/r/Biohackers/comments/1bmobnk/brain_after_chemo/","title":"Brain after chemo","quote":"N Selank Amidate, N Semax Amidate... After chemo brain fog","link_status":"ok","quote_status":"unverified"}]},"rationale":"","tokens_in":16996,"tokens_out":2699,"cost":0.0279925,"prev_hash":"genesis","hash":"962190b3fe8f04c2206590d97e9e1eef68260df351320e5efe24e5137712fb37"}]}