Medically reviewed by: Jayden Lee, PharmD, EMBA Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes

These lawsuits assert legal theories, including: Trademark infringement Violating the corporate practice of medicine doctrine False advertising Unfair competition Violations of federal drug laws (misbranding, unapproved new drugs) FDA Enforcement On February 6, 2026, FDA announced its intent to use all available compliance and enforcement tools within its authorities to address unsubstantiated claims and associated public health concerns. The FDA explicitly announced steps to combat compounding pharmacies making these marketing claims: Compounded products are generic versions of FDA-approved drugs Compounded products are the same as FDA-approved drugs Compounded products use the same active ingredient as FDA-approved drugs Compounded products are clinically proven to produce results FDA has made clear that failure to adequately address any violations may result in legal action without further notice, including, without limitation, seizure and injunction. This means the agency may bypass traditional warning letter procedures

That's because most zinc is stored inside cells, and levels of zinc in the plasma or serum are influenced by factors unrelated to depletion, such as recent meals, time of day, muscle breakdown during weight loss, and inflammation
Any place that sells it is not selling an FDA-approved product yet, Patel says