Answers to the most frequently asked questions.

Catalyst sells research peptides, not prescription medication. Retatrutide is being studied as a drug candidate by Eli Lilly, and Catalyst does not sell it for human use, medical treatment, diagnosis, or prevention.

Our products are designated Research Use Only and are intended for research purposes. That distinction matters: a compound can be available for laboratory research while a branded prescription drug is still moving through FDA review.

We do not provide dosing guidance, medical advice, or therapeutic claims.

Peptides labeled for research use do not require a prescription. They sit in a separate regulatory category, so the prescription requirement does not apply. Catalyst operates within the research-use-only (RUO) framework.

“Research Use Only” (RUO) is a regulatory designation under 21 CFR 809.10(c)(2). It applies to compounds manufactured and sold for non-clinical research, separate from products intended for diagnosis, treatment, or prevention of disease.

No. Catalyst does not provide medical advice, diagnosis, or treatment recommendations. The content on Science Explained, the lab reports, and the third-party COAs is education about published research, not medical guidance.

Brand-name GLP-1 peptides (Ozempic, Wegovy, Mounjaro, Zepbound) are FDA-approved and sold through pharmacies with a prescription. Catalyst sells research-use-only peptides that target the same receptors.

Catalyst batch-tests peptides at independent U.S.-based laboratories to the highest industry standards, including mass spectrometry confirming identity, HPLC measuring purity (>99% target), and sterility and endotoxin assays. An independent laboratory report (Certificate of Analysis) ships with every order. Learn how to read a COA.

Catalyst offers GLP-3 peptides in two concentrations: 10mg and 20mg per vial.

Unreconstituted vials hold in a cool, dry place out of direct sunlight. After reconstitution, refrigerate at 2 to 8°C.

Yes. Batch-level documentation can be reviewed before purchase so purity, identity, and testing details are clear before checkout.

Catalyst accepts Apple Pay, all major credit and debit cards (Visa, Mastercard, American Express, Discover) via Stripe, plus Cash App, Venmo, Zelle, and ACH bank transfer for customers who prefer peer-to-peer methods. All payment options are available at checkout.

Catalyst processes orders within 2 business days. Expedited 2-day delivery is available at checkout. Every order ships with tracking.

All sales are final. Catalyst does not accept returns or issue refunds, because research-use-only peptides cannot be safely resold once they leave our chain of custody. If an order arrives damaged or incorrect, write us within 7 days and we resolve it directly.