FDA to weigh easing limits on unproven peptides A Note on Peptides by Shantanu Out of Singapore FDA Proposes Exclusion of Semaglutide, Tirzepatide, Liraglutide from 503B Bulks List FDA posted on the topic LinkedIn Have you thought about taking peptides that aren't approved by the FDA? Think again. CBS News' chief medical correspondent, @drlapook, shares a cautionary tale from medical history about why testing medications is