Research-Only Peptides: Status, Evidence, and Risks

Widely discussed for tissue repair and gut healing, but NOT FDA-approved. Human evidence is extremely limited despite popular claims.

Promoted for wound healing and recovery, but NOT FDA-approved and on the FDA safety-risk list. Robust human evidence is lacking.

Explored for stimulating growth hormone release, which may affect body composition and skin health. NOT FDA-approved with significant data gaps.

One of the most studied peptides for skin and hair. Naturally occurs in your body but declines with age. Shown to boost collagen, improve skin elasticity, and may support hair thickness.

Popular in wellness clinics for its potential to support lean muscle, better sleep, and recovery. Often paired with CJC-1295. Not FDA-approved — talk to your doctor.

A cutting-edge mitochondrial peptide being studied for energy metabolism and cellular health. Early research is promising but it is still very new — no FDA approval yet.

A fragment of growth hormone that may help with fat metabolism without the side effects of full growth hormone. Popular in wellness clinics but still lacks strong human evidence.

Marketed online for tanning without sun exposure, but carries serious safety risks including potential links to skin cancer. We strongly recommend discussing safer alternatives with a dermatologist.

A longevity peptide being studied for its potential effects on telomeres and cellular aging. Interesting early research but far from proven — approach with healthy skepticism.

A mitochondrial peptide that targets the inner mitochondrial membrane to improve cellular energy production. Has been in serious clinical trials unlike many research peptides — but still not FDA-approved.

Used for anxiety, brain fog, and focus. Acts on both GABA (calming) and NMDA (memory) pathways. One of the few peptides with a pharmaceutical approval history, though not in the US.

A powerful anti-inflammatory tripeptide that shows promise for gut inflammation and skin conditions. Often used in combination with BPC-157 for gut healing protocols. Still early-stage research.

One of the most established immune-modulating peptides worldwide — approved in 30+ countries, just not in the US. Supports immune system balance rather than just boosting it. Now available through US compounding pharmacies.

A naturally occurring neuropeptide that connects your gut and brain. Being explored for gut healing, circadian rhythm regulation, and jet lag recovery. Early research but growing interest in the wellness community.

The most talked-about senolytic peptide — designed to selectively eliminate senescent ("zombie") cells that accumulate with age. Exciting concept but very early-stage research with limited human data.

The leading peptide candidate for "leaky gut" — it works by tightening the junctions between gut cells. Currently in Phase 3 clinical trials for celiac disease, which is further along than most peptides on this list.

A peptide that acts on the innate repair receptor — it helps your body reduce inflammation and repair tissue without suppressing your immune system. Being studied for neuropathy, gut health, and metabolic regulation.

A thymus extract peptide used in Russian medicine for immune restoration and anti-aging. Part of the "bioregulator" family of peptides developed by the Khavinson group. Limited Western clinical data but a long history of use in Russia.