For the Peptide-Curious
and Biohackers

A synthetic 15-amino-acid peptide, derived from a protein in human gastric juice, that is widely promoted for injury and gut healing but whose evidence is almost entirely from animal studies.

A synthetic growth-hormone-releasing-hormone (GHRH) analog, sold gray-market and usually stacked with ipamorelin; it reliably and durably raises growth hormone and IGF-1 in one human study, but its clinical development was abandoned after a participant death and it has no human evidence for the muscle or anti-aging uses it's sold for.

A naturally occurring copper-binding tripeptide with decades of skin-science research — as a topical cream it has real human data for wrinkle reduction, but the injectable form biohackers use has no controlled human evidence and can't be legally compounded.

A synthetic pentapeptide that selectively triggers short-term growth-hormone release, marketed for muscle growth, fat loss, recovery, and anti-aging — but its only human efficacy trials were for a gut condition (and failed), with no human studies behind the uses it's actually sold for.

A synthetic α-MSH analog, sold gray-market (injection or nasal spray) to tan skin and boost libido — it does measurably do both in small studies, but it is unapproved, unregulated, and linked in case reports to changing moles, melanoma, and acute toxicity.

An essential cellular coenzyme sold — directly or as the precursors NMN and NR — to slow aging and boost energy; supplements reliably raise NAD+ blood levels, but human trials have mostly not shown the promised health benefits.