Retatrutide vs Tirzepatide
Retatrutide vs Tirzepatide: head-to-head on weight-loss potential, mechanism, side effect profile, and current availability.
Retatrutide is the newest weight-loss compound in development at Eli Lilly. It's a stronger cousin of Tirzepatide (Mounjaro / Zepbound) and pulls bigger weight loss in trials, often 20%+ of body weight. One injection per week. Side effects are real, especially in the first few weeks.
Tirzepatide is the prescription weight-loss drug sold as Mounjaro (diabetes) or Zepbound (weight loss). It hits two appetite-control receptors at once. Most users lose 15-20% of body weight over several months. One injection per week.
Which one should you pick?
Pick Retatrutide if people plateaued on tirzepatide or users targeting >15% body weight loss.
Pick Tirzepatide if users who couldn't tolerate semaglutide or metabolic-syndrome adults under provider guidance.