SkinnyRx — FDA Warning Letter (February 20, 2026)

This letter is to advise you that the United States Food and Drug Administration (FDA) reviewed your website content at the internet address https://skinnyrx.com, in December 2025, and has observed that your website offers compounded drug products, including semaglutide and tirzepatide drug products.1 As described below, your website’s false or misleading claims concerning compounded semaglutide and tirzepatide products under sections 502(a) and 502(bb) of the Federal Food, Drug, and Cosmetic Act (FDCA) [21 U.S.C. §§ 352(a) and 352(bb)], result in products being introduced or delivered for introduction into interstate commerce in violation of section 301(a) of the FDCA [21 U.S.C. § 331(a)].

Under section 502(a) of the FDCA [21 U.S.C. § 352(a)] a drug is misbranded if its labeling is false or misleading in any particular. Furthermore, under section 502(bb) of the FDCA [21 U.S.C. § 352(bb)], a compounded drug is misbranded if its advertising or promotion is false or misleading in any particular.

The compounded semaglutide and tirzepatide products displayed on your website identify “SkinnyRx” on the pictured label, suggesting SkinnyRx is the compounder of those drugs when in fact it is not.2 Accordingly, the representations on your website that SkinnyRx is the compounder of these drug products are false or misleading, and the products are therefore misbranded under sections 502(a) and 502(bb) of the FDCA [21 U.S.C. §§ 352(a) and (bb)].

Additionally, the following claims concerning compounded semaglutide and tirzepatide products appear on your website:

Compounded drug products are not FDA-approved. Your claims imply that your products have been FDA-approved or otherwise evaluated for safety and effectiveness when they have not. As a result, these claims are false or misleading and your products are therefore misbranded under sections 502(a) and 502(bb) of the FDCA [21 U.S.C. §§ 352(a) and (bb)].

The introduction or delivery for introduction into interstate commerce of these misbranded products is a prohibited act under section 301(a) of the FDCA [21 U.S.C. § 331(a)]. The representations and claims identified in this letter put you on notice of our concerns but do not represent an exhaustive list of violations.

For the reasons discussed above, your compounded semaglutide and tirzepatide products are misbranded drugs under sections 502(a) and 502(bb) of the FDCA [21 U.S.C. §§ 352(a) and 352(bb)], introduced or delivered for introduction into interstate commerce in violation of section 301(a) of the FDCA [21 U.S.C. § 331(a)]. Please be advised, the receipt in interstate commerce of misbranded drugs, and the delivery or proffered delivery thereof, is also a violation of section 301(c) of the FDCA [21 U.S.C. § 331(c)].

As previously stated, the violations cited in this letter are not intended to be an all-inclusive statement of violations that may exist in connection with your products. You are responsible for investigating and determining the causes of any violations and for preventing their recurrence or the occurrence of other violations. It is your responsibility to ensure that your operations comply with all requirements of federal law, including FDA regulations. For example, compounded drug products must meet the conditions in sections 503A or 503B of the FD&C Act [21 U.S.C. §§ 353a or 353b] in order to be exempt from certain requirements under the Act, including the new drug approval requirements.