48 Investigates Peptide phenomenon: Alabama medical experts’ advice causing controversy

HUNTSVILLE, Ala. (WAFF) – The Alabama Board of Medical Examiners is telling doctors to stay away from non-FDA-approved peptides as the supplements gain popularity on social media.

Peptide-related searches hit 10.1 million in January 2026, according to Google. Millions of hashtags on TikTok have accompanied the trend.

“In general, a peptide is just a string of amino acids, which are building blocks of proteins,” said Dr. Ian McKeag with UAB’s sports medicine team…

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