Separate molecular identity from treatment indication
PT-141, Melanotan I and Melanotan II are not interchangeable names. Likewise, hCG and hMG require their own product records and potency specifications; a fertility grouping is not a regulatory classification.
Make the comparison specific
Ask for the actual finished-product label, manufacturer, preparation and intended transaction. Keep international-unit quantities distinct from milligram quantities. FDA's general compounding guidance also explains why biologics cannot be assumed eligible for 503A or 503B exemptions.
Regulatory context: FDA: compounding, approval and quality standards. Source reviewed . This source does not verify the identity, testing or availability of our catalog references.
Related guidance: Product-by-product review for hormone clinics. These references support a review, not a treatment recommendation or supply authorization.