P21 is a synthetic tetrapeptide derived from ciliary neurotrophic factor (CNTF), designed to promote neuronal survival and neurogenesis. Researchers study its effects on brain health and cognitive function.
In the literature, P21 appears most often in work focused on brain health, neuroprotection and cognition. Studies in this area tend to look at mechanisms and observed effects in laboratory and preclinical settings rather than outcomes in people, so the picture is best read as a map of where researchers have been curious — not as evidence of any benefit.
Because it is catalogued here under powder peptides, P21 also shows up in discussions of memory. Coverage across those topics varies widely in quality and depth, and much of it is early-stage. Reading the underlying research directly is the only way to judge how strong any particular finding is.
Tap a topic to see which peptides are most studied for it.
Angiotensin IV is a metabolite of the renin-angiotensin system primarily studied for its cognitive-enhancing properties. Researchers investigate its role in memory consolidation and retrieval, without significant cardiovascular effects.
BDNF (Brain-Derived Neurotrophic Factor) is a crucial neurotrophin for neuronal survival, synaptic plasticity, and mood regulation. Researchers investigate its implications for learning, memory, and neurodevelopmental disorders.
A neuropeptide preparation studied for neuroprotection, cognitive function, and recovery after brain injury.
Research use only. This page summarizes areas of published study and is not medical advice. No dosing, protocol, or usage guidance is provided.