Peptides

A small molecule, not a peptide. Blocks an enzyme involved in fat storage. Only tested in cells and mice.

Tested in people with muscular dystrophy. Trials were stopped early over safety concerns with blood vessels.

Designed to cut the blood supply to fat tissue. Monkey studies showed kidney damage. No human trials.

An approved prescription implant for a rare condition where sunlight causes severe pain.

A small piece of growth hormone tested for weight loss in people. It did not beat placebo in the main trials.

Derived from the hormone EPO but without its blood effects. Tested in people for nerve pain.

A skincare ingredient marketed as a topical alternative to Botox. Sold in cosmetics, not prescribed.

Copied from a stomach protein. Studied for healing in animals.

A four-part peptide from Russian research, studied in animals for lung and airway tissue.

Copies a hunger hormone called amylin. Being tested alongside semaglutide as a combination called CagriSema.

A short peptide from Russian research, studied in animals for heart tissue. No solid human data.

A four-part peptide from Russian research, studied in animals for cartilage and joints.

A mixture of pig-brain-derived peptides. Approved in several countries but not the US.

A short peptide from Russian research, studied in animals for lung tissue.

A short peptide copied from thrombin, tested in people for bone and wound healing.

A long-lasting copy of a growth hormone signal. Tested in small human studies.

A short peptide from Russian research, studied in animals for nerve repair.

A short peptide from Russian research, studied in animals for immune function.

A strong pain-blocking peptide first found in frog skin. Animal research only.

Studied in rats for building new connections between brain cells. No human data.

Named for its effect on deep sleep in rabbits. Human evidence is thin and inconsistent.

An approved weekly injection for type 2 diabetes.

A four-part peptide from Russian ageing research. Very early.

The first approved GLP-1 drug. Originally found in the saliva of the Gila monster lizard.

A peptide copied from a nerve cell adhesion protein, studied in rodents for memory.

Blocks a protein that limits muscle growth. Dramatic results in mice, no human trials.

Designed to clear out old, damaged cells. Studied only in cells and mice so far.

A tiny copper-carrying peptide used in skin products. Very early research.

Triggers a burst of growth hormone. Approved in Japan as a diagnostic test, not as a treatment.

Similar to GHRP-2. Known for strongly increasing hunger in animal studies.

A three-piece antioxidant the body makes naturally. Widely sold, though injected forms sit in a regulatory gray area.

A natural hormone signal. Often prescribed alongside testosterone therapy to keep the body's own production going.

An approved fertility drug. Also used alongside testosterone therapy. Not approved for weight loss.

Studied for raising growth hormone. Also looked at for effects on the heart.

A lab-altered version of Humanin, studied in animals for metabolism and brain protection.

Made by mitochondria and studied for protecting cells. Research is early — mostly cells and mice.

A shortened growth factor that acts quickly and locally. Used in lab research.

A modified growth factor that lasts longer in the body. Sold mainly as a cell-culture reagent.

Nudges the body to release growth hormone. Very early research.

A natural signal that starts the hormone chain controlling reproduction. Studied in people at research centers.

A three-piece fragment of a natural hormone. Studied for calming inflammation in the gut and skin.

Studied for tightening the gut lining in celiac disease. Reached late-stage human trials but missed its main goal.

An approved daily injection for weight loss and type 2 diabetes.

A short peptide from Russian research, studied in animals for immune and blood effects.

A natural germ-fighting peptide the immune system makes. Studied for infections and wound healing.

A skincare ingredient studied for boosting collagen. Found in many over-the-counter creams.

A weight-loss drug in human trials, developed mainly for the Chinese market.

Darkens skin. Not approved anywhere, with known side effects.

A short piece of a natural growth factor, studied in animals for muscle repair.

A pill, not a peptide. Raises growth hormone and IGF-1. Tested in people but never approved.

Made by mitochondria, the parts of cells that produce energy. Studied for metabolism and exercise capacity.

A cell-fuel molecule, not a peptide. Sold as an IV drip or shot. Tested in people for aging and energy, with mixed results.

A brain signalling peptide involved in staying awake and in appetite. Animal research.

A once-a-day pill being tested in large human studies for weight loss and type 2 diabetes.

A short peptide from Russian research, studied in animals for liver and reproductive tissue.

An approved hospital drug used in childbirth. Also studied for social behavior and bonding.

A small piece of a nerve growth factor. Studied in mice for memory and brain cell growth.

A short peptide from Russian research, studied in animals for pancreas and blood sugar.

A variant of a growth factor that muscle releases after damage. Only animal data exists.

A newer variant of BPC-157 with a changed salt form. Very little published research exists on it specifically.

A three-part peptide from Russian research, studied in animals for brain protection. Almost no human data.

A lab-designed peptide studied in cells for killing cancer cells. Very early research.

A short peptide from Russian research, studied in animals for prostate tissue.

An approved medicine for low sexual desire in women.

Hits three different hormone targets at once for weight loss. In late-stage human trials, not yet approved.

A Russian-developed peptide studied for anxiety. Most of the research is Russian-language.

An approved medicine that copies a gut hormone to lower appetite and blood sugar.

Developed in Russia and used there for stroke recovery. Little research exists outside Russia.

A shortened copy of a natural hormone that tells the body to make growth hormone. Doctors can prescribe it.

An approved prescription drug for rare genetic forms of obesity.

A small lab-made chemical, not a peptide. In mice it mimics some effects of exercise. No human studies.

An extended version of Argireline used in anti-wrinkle skincare products.

Lab-made human growth hormone. Approved for specific medical conditions and prescription-only.

Targets mitochondria directly. Tested in people for a rare genetic condition called Barth syndrome.

Hits two hormone targets for weight loss and liver disease. In human trials, not approved.

A piece of a natural protein. Studied for wound repair in animals.

An approved daily injection that builds bone in people with severe osteoporosis.

An approved medicine for a specific type of belly fat in people with HIV.

A thymus gland extract used in Russia. Very little research outside Russian journals.

A two-piece peptide studied in Russia for immune support. Almost no Western research.

An immune-signal peptide tested in people, with mixed results.

The full-length natural protein that TB-500 is a fragment of. This version has been tested in people for eye and wound conditions.

An approved medicine that copies two gut hormones to lower appetite and blood sugar.

A three-part peptide from Russian research, studied in animals for blood vessel tissue.

A two-part peptide from Russian research, looked at for immune and aging effects in animals.

A natural body signal involved in inflammation and blood flow. Tested in people for lung conditions.