Man Loses 6 Stone on Mounjaro, Warns of 'Horrible' Side Effects
Mounjaro side effects can be severe, as one man's inspiring yet cautionary weight loss journey reveals. Antony Hawman, a 48-year-old business owner standing at 6'1", dropped from 123kg (19.5 stone) by nearly 40kg (six stone) using Mounjaro, shrinking from XL/XXL clothes in July 2024 to a medium size with a 30-32 inch waist. Inspired by viral success stories, he started the GLP-1 and GIP receptor drug to combat intense food cravings and emotional eating—but not without brutal hurdles.
Antony Hawman's Journey to Mounjaro
"I decided I wanted to be healthier, which was the main aim," Antony said. At his heaviest, food dominated his life: "I would think about food all the time and I'd use it as a crutch: if I was sad, I'd eat, if I was happy, I'd reward myself with food." Combined with dietary changes and an active lifestyle, Mounjaro's ability to slow digestion and quieten the 'food noise' made it appealing.
What is Mounjaro and How Does It Promote Weight Loss?
Mounjaro (tirzepatide) is a dual GLP-1 and GIP receptor agonist approved for type 2 diabetes and weight management. It mimics gut hormones to regulate blood sugar, slow gastric emptying, and reduce appetite signals in the brain. This mechanism addresses the root causes of obesity for many, like Antony's constant cravings, leading to sustainable calorie reduction without constant willpower battles.
Clinical trials, such as SURMOUNT-1, showed average weight loss of 15-20% over 72 weeks, aligning with Antony's rapid six-stone drop. Unlike single GLP-1 drugs like Ozempic (semaglutide), Mounjaro's GIP addition may enhance fat loss and metabolic benefits, though individual responses vary based on starting weight, dose, and lifestyle.
The Dramatic Results: A Body Transformed
Antony's progress was profound. From 123kg and oversized clothing, he now fits mediums and size 30-32 waists. "The best part is I have completely changed my mindset on food. I feel in control instead of it controlling me," he shared. Beyond aesthetics, Mounjaro helped him taper off high-dose hypertension drugs for hereditary hypertension to the lowest level—a major health win.
"As long as you do your research and understand how to nourish your body and take some form of exercise, Mounjaro is an incredible tool, but it's just that, a tool," Antony emphasized. Despite regrets only about not starting sooner, he urges awareness of the downsides.
The 'Horrible' Side Effects: What Hit Antony Hard
A few months in, after moving to 7.5mg in his third month, Antony faced "a pretty miserable weekend of chronic stomach pains, diarrhoea and dehydration." Severe vomiting and diarrhea left him debilitated, highlighting gastrointestinal issues common with incretin mimetics.
Common Mounjaro Side Effects According to Eli Lilly
Manufacturer Eli Lilly lists nausea, diarrhea, vomiting, and stomach pain as the most frequent. These can escalate to dehydration and kidney risks if unmanaged. Antony's experience underscores why dose titration—starting low (e.g., 2.5mg) and increasing gradually—is critical, as rapid escalation amplifies GI distress.


