Best peptides, by goal.

Most “best peptide” lists rank by what sells. These rank by what has actually been published, using the same evidence tier as the rest of the site. Sometimes the honest answer for a goal is that nothing here is proven, and the page says so.

13 compounds assessed
weight loss.

This is the one goal where the honest answer is genuinely impressive, and where the gap between the top of the list and everything else is the widest on the site.

15 compounds assessed
muscle growth.

A category with enormous marketing energy behind it and almost no completed human outcome evidence to show for it.

8 compounds assessed
injury recovery.

The most popular research peptide category, and the one where personal experience is least able to tell you whether anything worked.

5 compounds assessed
gut health.

A small category with an unusual feature: one of its compounds actually completed late-stage human trials, and the result was not what the field hoped.

11 compounds assessed
anti-aging.

The category with the largest claims, the longest timelines, and a measurement problem that no amount of enthusiasm resolves.

7 compounds assessed
skin and hair.

Low stakes, low regulatory bar, and an evidence base largely generated by the people selling the ingredients.

4 compounds assessed
sleep.

A category with real search demand, a memorable name at the centre of it, and a trial record that almost nobody quotes.

8 compounds assessed
cognition.

Where the outcomes are subjective, the placebo response is enormous, and the compound with the most trial evidence produced the least encouraging result.

6 compounds assessed
libido and sexual function.

A small category containing a genuinely approved drug and a widely-sold unapproved compound trading on its mechanism.

7 compounds assessed
immune support.

Real biology, persistent translation difficulty, and a reminder that modulating immunity in either direction has consequences.

6 compounds assessed
energy and mitochondrial health.

A young field built on a real discovery, where the gap between the mitochondrial biology and the marketing is unusually wide.

3 compounds assessed
hair loss.

High search demand, minimal clinical evidence, and a mechanism story doing most of the work.

Compounds