Safety question
Is Selank safe?
Moderate risk — meaningful at higher doses or in vulnerable users. Selank scores 3/5. Adverse reactions are real and worth knowing — cardiovascular sensitivity, sleep disruption, and tolerance development show up at the upper end of the dose range. Cycling and individual response monitoring matter more than for foundational supplements.
Safety score
3 / 5
Evidence grade
C
Severe reactions on file
0
Pubmed cites
50
Key facts
- typical dose
- 0.4–0.9 mg
- dose frequency
- 1-2 doses
- timing
- AM/midday
- with food
- n/a
- safety score
- 3/5
- evidence grade
- C
- class
- peptide
- PubMed citations
- 50
- legal status (US)
- Research-chemical category
- legal status (UK)
- Research-chemical category
- legal status (EU)
- Research-chemical category
- legal status (AU)
- Prescription-only
- primary mechanism
- Heptapeptide structurally analogous to tuftsin, an endogenous tetrapeptide with immunomodulating activity.
Common side effects
- Nasal irritationmild
Who should not take Selank
- Pregnant or breastfeeding individuals — most nootropics have not been adequately studied in pregnancy, and the precautionary principle applies.
- Anyone on a prescription medication that overlaps mechanistically (stimulants, SSRIs, MAOIs, beta-blockers, anticoagulants) — clear interactions with your prescribing clinician before adding Selank.
- Anyone with significant cardiovascular, hepatic, renal, or psychiatric disease — established conditions raise the baseline risk for any new compound.
- Minors — almost no nootropics have a paediatric safety record, and developing brains are differently sensitive.
What "safe" means here
Our safety scoring reflects (a) published clinical and observational literature on healthy-adult use at standard supplement doses, (b) the spectrum of adverse-event reports in the medical and supplement-pharmacovigilance record, and (c) the regulatory status across major jurisdictions. It does notreflect long-term outcomes in populations that haven’t been studied, and it does not substitute for clinical judgement applied to your individual situation.
A 5/5 score does not mean “no risk” — it means risk has been quantified as low in healthy adults at usual doses. Idiosyncratic and allergic reactions are possible with virtually any compound, including those we rate highest.
Full mechanism, citations, and dose guidance for Selank are on the main reference page — see Selank. For the dose-by-dose breakdown, see Selank dosage. To check stack interactions, use the interaction checker.
This page is informational. It is not medical advice and does not establish a clinician-patient relationship. Individual risk varies with genetics, medications, pre-existing conditions, and dose. Always consult a qualified clinician before starting a new compound. See our full disclaimer and terms.