One body. One life. Go hard.

A working index of peptide protocols for the people who plan to be in the race until the end. Practitioner-sourced, evidence-graded, and updated as the literature moves. Built for the reader weighing a real decision, not a content-mill skim.

Updated 9 categories, 30 plus peptides Reader favourite: the FAQ for people who want to go hard
Field reference
The full peptide-by-peptide index. Category, mechanism, dose, schedule, timing, and a one-line plausibility grade for every entry.
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The performance FAQ
The 30 questions people ask when they are weighing a peptide protocol and want the answer from the practitioner literature, not a content-mill take.
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Reconstitution and dosing calculator
Pick a peptide, enter the vial size and bacteriostatic water volume, and the calculator returns the syringe units to draw. Includes weight-adjusted dose range and safety guardrails.
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New from The Peptide Index

The Peptide Safety Report

The full safety picture for the 32 peptides in regular practitioner rotation, as at July 2026. FDA and EMA status, adverse event profiles, drug interactions, contamination risk, age-adjusted tolerability, and Evidence index scoring for every entry. Free to read, free to download as PDF.

Read the report

Browse by what you are trying to do

The field reference is organised by what each peptide is for, not by chemistry. Start with the cluster that matches the question you are trying to answer.

Repair and recovery
Tendons, ligaments, gut, joints. The category with the most-published rodent data.
Sleep and growth hormone
GHRH analogues, ghrelin mimetics, and the peptides that target sleep architecture.
Immune system
Thymosin alpha-1 and the immune-modulating peptides that recalibrate, not overdrive.
Weight and metabolism
GLP-1 agonists, AOD-9604, and how to keep your muscle when the weight comes off.
Longevity and anti-ageing
Mitochondrial peptides, telomere targets, and the case for cautious optimism.
Skin, hair, and aesthetic
Copper peptides and the topical evidence base.

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