Cognitive, focus & mood
Selank
A synthetic analog of the immune peptide tuftsin, approved in Russia for anxiety.
How it works
An analog of the immune peptide tuftsin that acts on GABA, serotonin and BDNF, reducing anxiety without making you sleepy.
What it is used for
Anxiety and stress (approved in Russia).
What the evidence says
Small Russian clinical studies. It has not been checked by independent research.
Side effects and cautions
Mostly mild: tiredness.
Half-life
A few minutes in blood; its effects last longer (published estimates)
Makes sense for
- Adults with anxiety or stress looking for calm without sedation
Does not make sense for
- Replacing prescribed anxiety treatment without a doctor
Boost the effect
- A regular sleep schedule: steadies the stress response
- Aerobic exercise: lowers anxiety and raises BDNF