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Start here: how to inject, how to dose, how to read a lab report, and a plain-English guide for every compound we track.

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Guide library

Every peptide, explained.

A plain-English guide for every peptide we track: what it is, the real routes, dosing, cycling, and the honest safety picture. 55 guides and counting.

AllWeight lossHealing & gutMuscle & growthCognitiveLongevitySleepSexual healthHair & skin
⊙ Weight loss

Retatrutide: the complete guide

An investigational triple agonist from Eli Lilly that hits the GLP-1, GIP, and glucagon receptors at once.

Guide · 13 min read
⊙ Weight loss

Tirzepatide: the complete guide

A dual GIP and GLP-1 receptor agonist, the same molecule sold as Mounjaro and Zepbound.

Guide · 13 min read
⊙ Weight loss

Semaglutide: the complete guide

The flagship GLP-1 receptor agonist, the same molecule behind Ozempic and Wegovy.

Guide · 13 min read
⊙ Weight loss

Cagrilintide: the complete guide

A once-weekly amylin analog that works on the body's fullness signal.

Guide · 12 min read
⊙ Weight loss

Orforglipron: the complete guide

An oral GLP-1 receptor agonist, a small molecule you swallow rather than inject.

Guide · 12 min read
⊙ Weight loss

Mazdutide: the complete guide

A once-weekly dual agonist that hits both the GLP-1 and the glucagon receptor.

Guide · 12 min read
⊙ Weight loss

Survodutide: the complete guide

An investigational dual agonist that hits both the GLP-1 and the glucagon receptor.

Guide · 12 min read
⊙ Weight loss

AOD-9604: the complete guide

A synthetic fragment of human growth hormone, the tail end of the molecule that handles fat.

Guide · 12 min read
☾ Healing & gut

BPC-157: the complete guide

A 15-amino-acid peptide for tendon, ligament, and gut repair.

Guide · 12 min read
☾ Healing & gut

TB-500: the complete guide

A synthetic fragment of Thymosin Beta-4, the body's own repair protein.

Guide · 12 min read
☾ Healing & gut

KPV: the complete guide

A tiny three-amino-acid fragment of the body's own alpha-MSH hormone.

Guide · 12 min read
☾ Healing & gut

GHK-Cu: the complete guide

A naturally occurring copper tripeptide that signals skin to rebuild.

Guide · 12 min read
☾ Healing & gut

Thymosin α-1: the complete guide

A synthetic copy of Thymosin alpha-1, a natural peptide your thymus makes to train and balance the immune system.

Guide · 12 min read
☾ Healing & gut

ARA-290: the complete guide

An 11-amino-acid peptide derived from erythropoietin, engineered to drop the blood-building effect and keep only the tissue-protective signal.

Guide · 12 min read
☾ Healing & gut

GHK: the complete guide

Routes, dosing, cycling, and safety for GHK.

Guide · 11 min read
☾ Healing & gut

LL-37: the complete guide

Routes, dosing, cycling, and safety for LL-37.

Guide · 12 min read
☾ Healing & gut

Larazotide: the complete guide

Routes, dosing, cycling, and safety for Larazotide.

Guide · 11 min read
☾ Healing & gut

VIP: the complete guide

Routes, dosing, cycling, and safety for VIP.

Guide · 12 min read
◈ Muscle & growth

MK-677: the complete guide

Routes, dosing, cycling, and safety for MK-677.

Guide · 12 min read
◈ Muscle & growth

Ipamorelin: the complete guide

Routes, dosing, cycling, and safety for Ipamorelin.

Guide · 12 min read
◈ Muscle & growth

CJC-1295: the complete guide

Routes, dosing, cycling, and safety for CJC-1295.

Guide · 12 min read
◈ Muscle & growth

Sermorelin: the complete guide

Routes, dosing, cycling, and safety for Sermorelin.

Guide · 12 min read
◈ Muscle & growth

Tesamorelin: the complete guide

Routes, dosing, cycling, and safety for Tesamorelin.

Guide · 12 min read
◈ Muscle & growth

Hexarelin: the complete guide

Routes, dosing, cycling, and safety for Hexarelin.

Guide · 12 min read
◈ Muscle & growth

GHRP-2: the complete guide

Routes, dosing, cycling, and safety for GHRP-2.

Guide · 12 min read
◈ Muscle & growth

GHRP-6: the complete guide

Routes, dosing, cycling, and safety for GHRP-6.

Guide · 12 min read
◈ Muscle & growth

IGF-1 LR3: the complete guide

Routes, dosing, cycling, and safety for IGF-1 LR3.

Guide · 12 min read
✦ Cognitive

Semax: the complete guide

Routes, dosing, cycling, and safety for Semax.

Guide · 12 min read
✦ Cognitive

Selank: the complete guide

Routes, dosing, cycling, and safety for Selank.

Guide · 11 min read
✦ Cognitive

Dihexa: the complete guide

Routes, dosing, cycling, and safety for Dihexa.

Guide · 12 min read
✦ Cognitive

Cerebrolysin: the complete guide

Routes, dosing, cycling, and safety for Cerebrolysin.

Guide · 12 min read
✦ Cognitive

Bromantane: the complete guide

Routes, dosing, cycling, and safety for Bromantane.

Guide · 11 min read
✦ Cognitive

PE-22-28: the complete guide

Routes, dosing, cycling, and safety for PE-22-28.

Guide · 12 min read
✦ Cognitive

P21: the complete guide

Routes, dosing, cycling, and safety for P21.

Guide · 12 min read
✦ Cognitive

Tuftsin: the complete guide

Routes, dosing, cycling, and safety for Tuftsin.

Guide · 11 min read
⊕ Longevity

MOTS-c: the complete guide

Routes, dosing, cycling, and safety for MOTS-c.

Guide · 12 min read
⊕ Longevity

Epitalon: the complete guide

Routes, dosing, cycling, and safety for Epitalon.

Guide · 12 min read
⊕ Longevity

NAD+: the complete guide

Routes, dosing, cycling, and safety for NAD+.

Guide · 13 min read
⊕ Longevity

SS-31: the complete guide

Routes, dosing, cycling, and safety for SS-31.

Guide · 12 min read
⊕ Longevity

Humanin: the complete guide

Routes, dosing, cycling, and safety for Humanin.

Guide · 12 min read
⊕ Longevity

FOXO4-DRI: the complete guide

Routes, dosing, cycling, and safety for FOXO4-DRI.

Guide · 13 min read
⊕ Longevity

Thymalin: the complete guide

Routes, dosing, cycling, and safety for Thymalin.

Guide · 12 min read
⊕ Longevity

Klotho: the complete guide

Routes, dosing, cycling, and safety for Klotho.

Guide · 12 min read
⊕ Longevity

5-Amino-1MQ: the complete guide

Routes, dosing, cycling, and safety for 5-Amino-1MQ.

Guide · 12 min read
⊕ Longevity

Pinealon: the complete guide

Routes, dosing, cycling, and safety for Pinealon.

Guide · 12 min read
☾ Sleep

DSIP: the complete guide

Routes, dosing, cycling, and safety for DSIP.

Guide · 12 min read
✧ Sexual health

PT-141: the complete guide

Routes, dosing, cycling, and safety for PT-141.

Guide · 12 min read
✧ Sexual health

Kisspeptin: the complete guide

Routes, dosing, cycling, and safety for Kisspeptin.

Guide · 12 min read
✧ Sexual health

Melanotan II: the complete guide

Routes, dosing, cycling, and safety for Melanotan II.

Guide · 12 min read
✧ Sexual health

Oxytocin: the complete guide

Routes, dosing, cycling, and safety for Oxytocin.

Guide · 11 min read
✧ Sexual health

Gonadorelin: the complete guide

Routes, dosing, cycling, and safety for Gonadorelin.

Guide · 12 min read
✧ Sexual health

Melanotan I: the complete guide

Routes, dosing, cycling, and safety for Melanotan I.

Guide · 12 min read
❋ Hair & skin

AHK-Cu: the complete guide

Routes, dosing, cycling, and safety for AHK-Cu.

Guide · 11 min read
❋ Hair & skin

PTD-DBM: the complete guide

Routes, dosing, cycling, and safety for PTD-DBM.

Guide · 11 min read
❋ Hair & skin

Zinc Thymulin: the complete guide

Routes, dosing, cycling, and safety for Zinc Thymulin.

Guide · 11 min read

Just to be clear.

This site is for educational and informational purposes only and is not medical advice. Nothing here is intended to diagnose, treat, cure, or prevent any disease, and none of these statements have been evaluated by the FDA or any regulatory authority. Talk to a licensed healthcare provider before starting anything.

Peptides and other compounds referenced on this site are sold by third-party vendors strictly as research chemicals for laboratory and research use only. They are not drugs, dietary supplements, cosmetics, or products intended to diagnose, treat, cure, or be consumed by humans or animals, and nothing here is an offer to sell or any encouragement to use them in any such way. You must be at least 18 years old, and of legal age in your jurisdiction, to use this site. Clearly Peptides does not manufacture, sell, supply, or ship any peptides or compounds.

Lab data, grades, and prices are aggregated from publicly available third-party sources, primarily the Janoshik public database and finnrick, plus community-submitted reports. We don't run labs or test anything ourselves. We present this public information, credit each source, and link back to the original report so you can read it yourself. Listing a vendor or compound is not an endorsement.

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