Compound guides
Start here, by compound
One page per compound: what it is, how it works, its FDA status, the label's dose range, a representative cost, and a live look at how the providers selling it compare. Each guide links out to this site's own deeper coverage — the reconstitution calculator, the full dosage chart, the true-cost comparison, and the complete legal-status review — for whichever question you came here to answer.
Published only for compounds this site independently ranks a live provider board for — that is the differentiator no research-chemical or DIY site can replicate, and it is the bar every guide below has to clear.
Tirzepatide
Dual GIP/GLP-1 agonist — approved as Zepbound (weight management) and Mounjaro (type 2 diabetes).
- FDA status
- FDA-approved
- Providers ranked
- 100 providers ranked
Semaglutide
GLP-1 agonist — approved as Wegovy (weight management) and Ozempic (type 2 diabetes).
- FDA status
- FDA-approved
- Providers ranked
- 98 providers ranked
Sermorelin
GHRH analog for growth-hormone release — its only approved brand, Geref, is discontinued.
- FDA status
- No current label
- Providers ranked
- 58 providers ranked
PT-141
Bremelanotide — approved as Vyleesi for HSDD in premenopausal women only; also sold compounded.
- FDA status
- Vyleesi FDA-approved
- Providers ranked
- 6 providers ranked
NAD+
A cellular coenzyme sold as an injectable, nasal spray, or oral liquid — no FDA-approved product exists.
- FDA status
- No FDA-approved product
- Providers ranked
- 38 providers ranked
Glutathione
The body's own antioxidant tripeptide, sold as IV, oral, or nasal spray for antioxidant support.
- FDA status
- No FDA-approved product
- Providers ranked
- 19 providers ranked
GHK-Cu
A copper-binding tripeptide with real topical trials — and zero injectable human trials.
- FDA status
- No FDA-approved product
- Providers ranked
- 7 providers ranked
Not sure which compound yet?
Peptides for weight loss: the honest split states plainly which compounds are FDA-approved and trial-proven for weight loss and which are not, with the evidence for each. Already know your provider question? Compare every ranked provider across every compound in one filterable table, or see our full provider-review index.