How to Stop Eggy Burps When Taking Mounjaro

Eggy burps occur because Mounjaro slows gastric emptying — the rate at which food moves from your stomach into the small intestine. This slower digestion can allow stomach bacteria to ferment food more extensively, producing hydrogen sulphide gas that creates that distinctive eggy smell. This mechanism is actually how tirzepatide helps with weight loss, but it can lead to this uncomfortable side effect.

Practical management strategies include:

• Eat smaller, more frequent meals — large meals take longer to digest and increase gas production
• Avoid sulphur-rich foods — reduce eggs, cruciferous vegetables (broccoli, cabbage, Brussels sprouts), garlic, onions, and processed meats temporarily
• Stay hydrated — drink plenty of water throughout the day to support digestion
• Eat slowly and chew thoroughly — this aids digestion and reduces air swallowing
• Avoid carbonated drinks and artificial sweeteners — these can increase gas and bloating
• Take a short walk after eating — gentle movement can help move food through your digestive system
• Consider ginger tea or peppermint tea — may help soothe digestion

Most people find eggy burps resolve within a few weeks as their body adjusts to the medication. If the symptom persists significantly beyond 4–6 weeks or causes you real distress, speak to your prescriber about whether a temporary dose adjustment or different timing of doses might help.

In the UK, Mounjaro is a prescription-only medicine requiring clinical assessment before being prescribed. You can access it through two main routes: NHS specialist weight management services or private online prescribing. NHS access is through tier 3 specialist services, typically following a GP referral, though waiting times vary significantly by region and availability can be limited. Private prescribing offers quicker access — you'll have an online consultation with a UK-licensed prescriber who assesses whether tirzepatide is suitable for you, with prescriptions then dispensed by a GPhC-registered pharmacy.

Private costs typically range from approximately £129–£320 per month depending on your dose and provider. Your Mounjaro KwikPen (containing 4 weekly doses) requires ongoing refrigeration between 2–8°C when unopened, and up to 30 days at room temperature once started. Individual prescribers and pharmacies set their own pricing, so it's worth comparing costs across providers. Many people find private prescribing offers faster access and convenience, though it is an out-of-pocket expense.

The online consultation process is straightforward: you'll answer detailed health questions about your medical history, current medications, and weight management goals. A licensed prescriber reviews your information and decides whether Mounjaro is appropriate for you — not everyone is suitable. If approved, a prescription is issued and your first KwikPen is sent to you with clear injection guidance. Your prescriber will typically recommend starting at 2.5 mg weekly, increasing by 2.5 mg every 4 weeks up to your target maintenance dose (usually 5–15 mg weekly). You'll be advised to combine Mounjaro with reduced-calorie eating and increased physical activity for best results. Use our GLP-1 weight loss calculator to estimate potential results at different doses, and our BMI calculator to track how your weight relates to your health. Always inform your prescriber of any other medications you take, as Mounjaro may affect absorption of oral contraceptives and some other drugs.