Elon Musk recently shared a post on X, revealing he uses the weight loss drug Mounjaro. Musk posed in a Santa Claus outfit by a holiday tree and captioned the post, "Ozempic Santa," later clarifying he uses Mounjaro. Musk described Mounjaro as more effective with fewer side effects compared to Ozempic. Musk supports weight loss treatments for their potential to greatly improve public health. Musk's post sparked mixed reactions, with some praising his transformation and others voicing skepticism over the drug's long-term effects.