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In December 2025, FDA issued a Warning Letter to Darmerica , an Active Pharmaceutical Ingredient (API) importer/manufacturer citing cGMP violations, distribution of retatrutide to 503A compounding pharmacies, and failure to list all drugs distributed into interstate commerce in violation of section 510(j) of the FD&C Act

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The label doesn't disclose how much of each makes up the 200 mg total

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If you have a history of reacting to sulfur-based compounds or specific amino acids, you should proceed with caution