Injectable peptides are generating a lot of buzz online . One of these is retatrutide , a drug that's being described as the next big thing in weight loss. Some say it may be even more powerful than Ozempic or Wegovy , two other popular weight loss drugs. Beyond health care, gym-goers are using it to try to get leaner, faster. This trend is sometimes dubbed " leanmaxxing ". But there's a catch. Retatrutide is still experimental . It hasn't been approved for use anywhere in the world, yet it's