--- title: "Semax + Selank: what sources report" url: https://humanpeptides.fyi/peptides/semax-selank site: humanpeptides.fyi last_reviewed: 2026-10-11 --- # Semax + Selank > humanpeptides.fyi makes no claims of its own. Every statement below reports what a cited source says, with its link. Not medical advice. Semax + Selank: Intranasal combination of Semax (ACTH(4-7)-PGP analogue, BDNF-raising stimulating nootropic) and Selank (tuftsin analogue, GABA-modulating anxiolytic). The sources cited here most often discuss it for: Focus and calm, anecdotal; See Semax; See Selank. Evidence label: Unstudied. ## At a glance - **Type:** Blend - **Family:** Mind & Mood - **Evidence label:** Unstudied (1 of 5) - **Regulatory status:** Neither Semax nor Selank is FDA-approved; Dr. Axe's A-Z guide lists both as research only. - **Goals discussed:** Focus & Cognition, Calm & Mood - **Also called:** Semax and Selank nasal spray - **Last reviewed:** 2026-10-11 ## What is Semax + Selank? - Intranasal combination of Semax (ACTH(4-7)-PGP analogue, BDNF-raising stimulating nootropic) and Selank (tuftsin analogue, GABA-modulating anxiolytic); intent is 'calm focus'; no studies of the combination exist; neither component is FDA-approved. Sources: , A user-assembled pairing of two separate Russian peptides, Semax (ACTH-derived) and Selank (tuftsin-derived); no study has tested them together. **Regulatory status:** Neither Semax nor Selank is FDA-approved; Dr. Axe's A-Z guide lists both as research only. Source: ## What is Semax + Selank researched for? ### 1. Focus and calm, anecdotal - Combined intent: Semax focus/cognition plus Selank anxiety reduction; users report clearer focus, less anxiety and better work output, others only subtle effects (anecdotal Reddit/forum) Sources: , - Goals: [Focus & Cognition](https://humanpeptides.fyi/objectives/mind), [Calm & Mood](https://humanpeptides.fyi/objectives/mood) ### 2. See Semax - See Semax: BDNF increase and stroke-recovery data (Russian human studies, animal) Sources: , - Goals: [Focus & Cognition](https://humanpeptides.fyi/objectives/mind) ### 3. See Selank - See Selank: anxiolytic comparable to medazepam in GAD (small Russian human study) and immunomodulation Sources: , - Goals: [Calm & Mood](https://humanpeptides.fyi/objectives/mood) ## What do researchers and users say about Semax + Selank? > "At first, it worked really well for me.I was able to stay focused and get a lot of work done for 3/4 hours at a time." > > Anonymous user, r/NootropicsHelp, semax and selank nasal spray. Context: Forum post after about two months of combined intranasal use; the same user later reported headaches and unusual irritability. > "Tried both in the nose. Felt nothing. Total waste of time and money." > > Anonymous user, r/Biohacking, Semax Selank protocol thread (original post removed by moderators). Context: Forum reply about intranasal Semax and Selank; other replies describe subtle benefits or mild drowsiness. > "FDA lacks important information regarding any safety issues raised by selank acetate administered to humans." > > US Food and Drug Administration, Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks. Context: FDA safety summary for the Selank component; FDA wrote a similar note for Semax. ## What side effects of Semax + Selank are reported? - Headaches, irritability, overstimulation, nasal irritation with higher/repeated doses (anecdotal) Sources: - FDA cites inadequate human safety data for Semax Sources: - FDA flags possible immunogenicity from aggregation and impurities for compounded forms of both components, and lacks human safety data for each. (FDA assessment) Sources: - Drowsiness from the Selank component reported by some users. (anecdotal) Sources: ## What do peptide guides say about Semax + Selank? - **PepEdHub:** PepEdHub's Selank profile says Selank is often combined with Semax, framed as pairing mood support with cognitive support. - **Seek Peptides:** Seek Peptides lists Semax for focus and Selank for anxiety, and notes both are available as nasal sprays. - **Dr. Axe:** Dr. Axe's A-Z guide places both Selank and Semax among research-only peptides, alongside BPC-157 and TB-500. ## What does the research say, system by system? ### Hormones & physiology - Selank component modulates IL-6/Th1-Th2 cytokines (human small study) Sources: ### Brain, mood & sleep - Semax often described as short-lived focus/energy, Selank as calming (may cause drowsiness); many users prefer Semax AM and Selank PM rather than a fixed blend (anecdotal) Sources: , ### Also notable - No published study of the combination; effects extrapolated from components Sources: ## How strong is the evidence for Semax + Selank? **Unstudied** (1 of 5). Blend itself anecdotal only; components have small Russian human studies + animal data _No direct studies of this product or blend. Anecdote and component data only._ ## Questions about Semax + Selank ### What is Semax + Selank? Intranasal combination of Semax (ACTH(4-7)-PGP analogue, BDNF-raising stimulating nootropic) and Selank (tuftsin analogue, GABA-modulating anxiolytic). A user-assembled pairing of two separate Russian peptides, Semax (ACTH-derived) and Selank (tuftsin-derived); no study has tested them together. ### Is Semax + Selank FDA-approved? Neither Semax nor Selank is FDA-approved; Dr. Axe's A-Z guide lists both as research only. ### What is Semax + Selank researched for? The sources cited on this page most often discuss three outcomes: Focus and calm, anecdotal; See Semax; See Selank. Each line above shows what the source reports and how strong that evidence is. ### What side effects of Semax + Selank are reported? Reported in the cited sources: Headaches, irritability, overstimulation, nasal irritation with higher/repeated doses; FDA cites inadequate human safety data for Semax; FDA flags possible immunogenicity from aggregation and impurities for compounded forms of both components, and lacks human safety data for each. The list is not complete, and few listed risks does not mean a compound is safe. ### How strong is the evidence for Semax + Selank? Evidence label: Unstudied. Blend itself anecdotal only; components have small Russian human studies + animal data. ### What else is Semax + Selank called? Names used for it include Semax and Selank nasal spray. ### Does humanpeptides.fyi recommend Semax + Selank? No. humanpeptides.fyi makes no claims and no recommendations of its own. It summarizes and links to what others have published and posted. Nothing here is medical advice; talk to a licensed clinician. --- Family: [Mind & Mood](https://humanpeptides.fyi/peptides?cat=mind). HTML version: . 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