• glucagon-like peptide-1 (GLP-1)
• glucose-dependent insulinotropic polypeptide (GIP)

Mounjaro can also improve the way your body breaks down sugars and fats, leading to weight loss in some patients.

Very common side effects of Mounjaro include:

• diarrhoea
• feeling sick (nausea)

• fast pulse
• mild to moderate allergic reaction, such as eczema, itching, or rash
• decrease in appetite
• pain in the stomach
• vomiting (being sick)
• constipation
• indigestion
• bloating
• gas and burping
• heartburn or reflux
• fatigue
• an increase in the levels of pancreatic enzymes, which will show up on a blood test
• itching, redness, or irritation at the injection site

• gallstones
• an increase in calcitonin (a hormone that helps to control calcium levels)

• take your treatment at the same time and day each week
• manage nausea symptoms by sipping cold water, avoiding greasy, heavy meals, and eating smaller meals more often
• make sure to eat enough fiber (if you get constipation)
• stay hydrated if you have diarrhoea or nausea
• take anti-diarrhoea tablets
• only take the dose prescribed to you and avoid increasing your dose unless your doctor tells you to
• let your doctor know if you have any side effects that bother you or aren’t going away on their own
• speak to your doctor if you take other medications that may interact with Mounjaro or cause side effects

• a severe health condition that affects the emptying of your stomach, such as severe gastroparesis
• an eye condition, such as diabetic retinopathy
• ever had pancreatitis, which is an inflammation of the pancreas

• Saxenda, which contains the active ingredient liraglutide, is taken once daily and is gradually increased to a maximum dose of 3mg a week

• Wegovy, a new weight loss treatment that contains semaglutide, is taken once a week and has a maximum dose of 2.4mg
• Victoza, an ‘off label’* medication when used for weight loss, contains the active ingredient liraglutide and is taken once a day
• Trulicity is also available ‘off label’ as a once-weekly injection and contains the active ingredient dulaglutide

• Xenical, a prescription medication containing orlistat, which causes around a third of the fat eaten at meals to be excreted rather than digested
• orlistat, an unbranded version of Xenical, which works in the same way
• Alli, an over-the-counter version of orlistat, which comes in a lower dose
• Mysimba is a prescription medication that contains bupropion and naltrexone hydrochloride, which work on the areas of your brain controlling energy and hunger levels