Rosie O’Donnell is celebrating her health transformation, crediting the medication Mounjaro for her recent weight loss.

In a May 23 Instagram post, the 63-year-old comedian shared a photo of herself looking slimmer and expressed disbelief at her new appearance, writing, “I can’t believe this is me.”

Mounjaro, a prescription drug primarily used to manage type 2 diabetes, also promotes weight loss.

O’Donnell, who relocated to Ireland with her child in January, said the move and having to cook for herself contributed to her healthier lifestyle. Without a personal chef, she’s been preparing meals for her and her child, Clay.

In a TikTok video, O’Donnell reflected on her weight struggles, sharing that she’s gone down to a size large from an XL or XXL and finds the change “shocking.”

She also praised Mounjaro’s effectiveness but acknowledged its high cost, saying it should be made accessible to anyone who needs it.

Other celebrities like Whoopi Goldberg and Eric Stonestreet have also publicly shared their positive experiences with Mounjaro.

O’Donnell continues to advocate for broader access to the drug, calling its impact on health and well-being “life-altering.”