Sleep & Cognitive

This category covers peptides studied for effects on neurological signalling, including BDNF expression, neurotransmitter modulation and sleep architecture. Several originate from Russian and Eastern European research programmes with literature that is less accessible in English.

That accessibility gap is worth knowing about when evaluating claims in this area: an apparent absence of published evidence sometimes reflects translation and indexing rather than an absence of study, and sometimes reflects a genuine absence. The two are not easy to distinguish from a product page.