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Selank for Health & Longevity

Created on 10/27/2026 – Quick Reference based on Evidence Review created using AI4L / Opus 5.5 – Audit

Selank, a short synthetic peptide registered in Russia as non-prescription nasal drops for anxiety and nervous exhaustion, is sold elsewhere mainly through unregulated vendors. Small Russian trials from the institutes that created it, in people with anxiety disorders, suggest anxiety relief comparable to older sedating anti-anxiety drugs and less fatigue. No data address healthy aging, and its short safety list reflects limited study rather than proven safety. (Full Review)

Protocol

Registered regimen
2 drops in each nostril, three times daily
0.15% (1.5 mg/mL) solution for 14 days, repeatable after 1–3 weeks
Time of day
Morning to early afternoon
Stimulant effects were reported; some users find late doses disturb sleep
Research-peptide approach
Doses are unstandardized
Users typically apply nasal sprays, and some inject subcutaneously; no safe or effective dose is established
Time to effect
Anxiety relief
14-day trial courses
Onset in healthy adults is unknown
Added to phenazepam
Earlier improvement
Than phenazepam alone

Benefits

Contraindications
  • Pregnancy
  • Breastfeeding
  • Age under 18 years
  • Hypersensitivity to Selank or methylparaben
  • Bleeding disorders or full-dose anticoagulation (no human data)
    •
Key Interactions
  • Phenazepam (benzodiazepine): fewer benzodiazepine side effects
    •
Theoretical (inferred from mechanism)
  • Other benzodiazepines (diazepam, alprazolam): possible additive calming
  • Opioids and opioid blockers (morphine, naltrexone): possible additive opioid effects, or blunted Selank response with naltrexone
  • Anticoagulants and antiplatelets (warfarin, aspirin): possible increased bleeding
  • Serotonergic antidepressants (sertraline, escitalopram): possible altered mood response or side effects
  • Sedating over-the-counter antihistamines and sleep aids (diphenhydramine): possible excess drowsiness and impaired driving
  • Over-the-counter nasal decongestants and steroid sprays (oxymetazoline, fluticasone): possible reduced Selank uptake
  • Calming supplements (kava, phenibut): possible excess sedation
  • Supplements with antiplatelet effects (fish oil, ginkgo): possible increased bruising or bleeding
  • Semax and other peptides (CJC-1295): possible additive or unpredictable effects
  • Immunosuppressants (tacrolimus): possible interference with immune control
  • Anesthesia and procedural sedation (propofol, midazolam): possible deeper sedation
    •

Risk & Side Effects

  • High:
  • Medium:
  • Low: Allergic reactions; sedation, dependence and withdrawal; harms from unlicensed products and concurrent peptide use
    •
  • Speculative: Immune reactions to compounded products; bleeding tendency; effects on fetal brain development; unknown effects of repeated immune modulation
    •

Monitoring

Marker Target Why
GAD-7 score No established target; change from own baseline Main efficacy marker
Resting heart rate 60–100 beats/min (standard reference range) Safety check: palpitations reported in users
Pregnancy test (urine or serum hCG) Negative (standard reference range) Safety check: pregnancy stops use
INR (warfarin users only) 0.8–1.2 (standard reference range) Safety check: rise changes use

Cadence: Baseline before starting; then at day 3, at day 14, and before each repeat course; warfarin users add an INR 1–2 weeks after starting. No change after two full courses indicates non-response.

Qualitative Assessment

  • Anxiety and worry in daily situations
  • Daytime energy and fatigue
  • Mental clarity and concentration
  • Sleep onset and quality
  • Daytime drowsiness
  • Nasal comfort and any allergic symptoms
Not medical advice. Educational distillation of a single evidence review. Confirm any decision with a qualified clinician, especially in the presence of prescription drugs or chronic conditions.