Cognition / stress
Semax vs Selank
Semax is more directly discussed in attention/memory research; Selank has human anxiety-spectrum studies with some reported nootropic effects. Outcomes are.
At a glance
Semax
Selank
Human evidence
Older regional stroke and rehabilitation studies report neurological/functional signals and BDNF changes, but this evidence does not establish healthy-person cognitive enhancement.
Older regional comparative studies report anxiolytic signals in generalized anxiety and related disorders, but modern large placebo-controlled independent replication is sparse.
Research focus
Stroke/neuroprotection and cognitive research
Anxiety/stress and neurocognitive research
Regulatory status
Not FDA/EMA-approved; US compounding status has been under FDA review.
Not FDA/EMA-approved; FDA highlights limited safety information for compounded use.
Route / formulation
Do not convert regional clinical use into a general cognitive-enhancement claim.
Regional intranasal studies do not establish universal product equivalence or long-term safety.
No robust head-to-head trial identified Semax is more directly discussed in attention/memory research; Selank has human anxiety-spectrum studies with some reported nootropic effects. Outcomes are not interchangeable.