Penny Whitaker, a 45-year-old mother of three from Suffolk, began taking the weight-loss drug Mounjaro in July 2025 and lost two stone, returning to a size 10 figure. According to Daily Mail - Health, Whitaker described how even a couple of glasses of white wine now leave her feeling unexpectedly low, emotionally brittle, and prone to intense arguments with her husband. She said that before Mounjaro, a glass of wine would help her relax, but now it seems to do the opposite, making her feel low, anxious, and far more sensitive. Whitaker recalled an incident where she reacted disproportionately to an innocuous comment, saying things she did not mean, and later felt deeply embarrassed. She has since stopped drinking wine altogether, saying she no longer trusts how it affects her.
Other weight-loss jab users have reported that their tolerance for alcohol has dramatically reduced, with even small amounts causing stronger effects. The medical mechanism by which Mounjaro might alter alcohol tolerance or emotional reactions is not yet understood, and no official studies or warnings from health authorities about its interaction with alcohol have been released.
A 42-year-old mother who lost three stone on Mounjaro told Daily Mirror - Main that her confidence skyrocketed but her marriage broke down. According to Daily Mirror - Main, she described how her husband admitted he preferred her before the weight loss and said he 'misses' her curves. She said that when she was bigger, he never worried about other men noticing her, but after her transformation, he made comments suggesting she was trying to impress others. The woman has been having an affair for the past two months as a result of her husband's lack of appreciation for her new look. She said the affair happened because she wanted to feel seen again, and that her new partner celebrates her confidence. The husband reportedly told her that her confidence was the first thing that attracted him to her.
Gogglebox star Amy Tapper has lost 8 stone using Mounjaro and states she will need lifelong weekly injections. According to Daily Mirror - 3am Showbiz, Tapper described Mounjaro as not a quick fix, saying she will continue injecting herself every week for the rest of her life. She said her eating and exercise habits have always been good, but Mounjaro has given her a 'peaceful' mind free from food-related thoughts. Tapper explained that what has changed is what is in her mind, and how quiet and peaceful it is, allowing her to go for dinner with friends without constant thoughts about food.
Mounjaro is described by the NHS as a weight loss medicine that makes you feel fuller for longer and less hungry, and can be prescribed for weight-related health conditions including type 2 diabetes and cardiovascular disease. The long-term psychological impact of Mounjaro on users' self-perception and relationships remains unknown, and it is unclear how common the reported relationship issues are among users.