Can I Take Mounjaro Without a Gallbladder? (October 2026)

01 · The core answer

Can you take Mounjaro without a gallbladder?

You may be able to, but suitability is individual. Mounjaro is a prescription-only medicine, and your prescriber takes extra care, or may recommend against treatment, if you have a history of gallbladder problems.¹³ Having had the organ removed is part of that history, so it needs to be declared.

02 · Your next step

What should you do next?

Be specific in your consultation. Say when the surgery happened, what it was for, and whether you have symptoms now. Our free consultation is reviewed by a GPhC-registered prescriber, and orders that turn out to be unsuitable are refunded automatically.

For broader context, see our weight loss clinic.

03 · Gallbladder side effects

Gallstones and gallbladder inflammation on Mounjaro

Gallbladder events are a recognised part of the safety picture. Gallstones (cholelithiasis) are a common side effect in the weight-management trials, affecting between 1 in 100 and 1 in 10 people. Acute gallbladder problems were linked to the amount of weight lost. Inflammation of the gallbladder (cholecystitis) was uncommon in the weight-management trials, affecting between 1 in 1,000 and 1 in 100 people.¹

Raise this with your prescriber, who can explain how your surgery affects your assessment. Our guides on GLP-1 medicines and the gallbladder and side effects without a gallbladder go further.

04 · Digestion and stomach emptying

How Mounjaro affects digestion

Tirzepatide activates the GIP and GLP-1 receptors, which helps regulate appetite and slows how quickly the stomach empties.¹ Most people feel fuller sooner and less hungry between meals.

If you already have digestive symptoms after surgery, mention them. Severe vomiting or diarrhoea can cause dehydration, which can strain the kidneys, so keep fluids up and get medical help straight away if you cannot keep fluids down. A GP or dietitian is the right person for advice on what to eat or avoid after gallbladder removal.

05 · Warning signs

When to seek urgent help

Seek immediate medical help for pain in the upper right abdomen, fever or yellowing of the skin or eyes, which can signal gallbladder problems.¹³ Severe, persistent stomach pain that spreads to your back, with or without vomiting, may be pancreatitis and also needs medical help straight away. Seek immediate medical help for signs of a severe allergic reaction, such as swelling of the face or throat and difficulty breathing.

You can report any suspected side effect through the MHRA Yellow Card scheme.¹⁹ See also our overview of how Mounjaro works without a gallbladder.

06 · Alternatives and comparisons

Other options if Mounjaro is not suitable

If your prescriber advises against Mounjaro, other routes exist. Read about weight loss medication without a gallbladder, other GLP-1 medicines, or how the options compare. Each medicine has its own safety profile, so ask your prescriber before switching.