 Matt Piper, CBS News. The winners in the Battle of the Bulge, Munjaro, and Zepbound. A study in the journal JAMA Internal Medicine finds people who take the weight loss drugs, whose active ingredient is terzepatide, an appetite-suppressing hormone, are three times more likely to shed 15% of their body weight than those on Ozempic and Wegovy. Deborah Rodriguez, CBS News.