Mounjaro dos and don’ts: How to take Mounjaro safely

Written by
Jaanki Kotecha
Last reviewed
January 23, 2026
Reviewed by
Ting-Hoi Chan
Next review
January 23, 2027
Jump to question

From travel to alcohol to family planning, our helpful guide of dos and don’ts will help you make safe choices whilst taking Mounjaro.

Whether you’re planning on travelling, you accidentally missed a dose or you want to know how it could interact with your family planning, here’s a handy list of dos and don’ts to make sure you stay safe and healthy throughout your Mounjaro Kwikpen journey.

Can you take two shots of Mounjaro at the same time?

Don’t take two shots of Mounjaro at the same time to make up for a missed dose or to double your dose. The safety and efficacy of doing this has not yet been studied and is not recommended by the manufacturer. You must leave at least 3 days between doses. For more information on what to do if you miss a dose, take a look at our handy guide.

Do you take Mounjaro on an empty stomach?

Mounjaro is taken subcutaneously, which means it’s injected under the skin into the fat and is then absorbed into the bloodstream. As it does not enter the bloodstream through the stomach, you can take Mounjaro with or without food.

Can you drink alcohol on Mounjaro?

Although alcohol is not known to interact directly with the active drug in Mounjaro (Tirzepatide), it is not recommended to drink alcohol whilst taking Mounjaro. This is because consuming alcohol may lead to increased calorie consumption and make you more likely to experience gastrointestinal side effects such as nausea and vomiting, which increases the risk of dehydration, particularly during dose increase.

As alcohol can cause dehydration, it’s important to stay hydrated when taking Mounjaro. Many people aim to drink 2-3 litres of fluid per day from water, unsweetened tea and coffee, sugar free squash, low fat milk or unsweetened soya milk. However, if you have been advised to restrict fluids, follow your clinician’s individual recommendations.

Can you smoke while on Mounjaro?

Similarly to alcohol, tobacco smoke and nicotine do not directly interact with Tirzepatide. However, stopping smoking is one of the most impactful changes you can make for long-term health.

Can you use Mounjaro if not refrigerated?

It’s recommended to refrigerate the Mounjaro KwikPen. If you forget, don’t worry! After first use, Mounjaro may be stored out of the refrigerator at a temperature below 30°C for up to 30 days. After this time, the pre-filled KwikPen must be discarded. Visit our Mounjaro guide for more information on how to correctly store your Mounjaro Kwikpen.

Can you take Mounjaro when pregnant?

No, do not take Mounjaro when pregnant. There is not enough research to suggest that the active drug in Mounjaro is safe to be used during pregnancy, as pregnant people have not been included in clinical trials. Furthermore, animal research suggests that Mounjaro could be harmful to a fetus. Phlo Clinic will not prescribe Mounjaro to you if you are pregnant.

If you are planning a pregnancy, Mounjaro should be stopped at least 1 month beforehand, as the medicine stays in the body for several weeks after the last dose.

Can you take Mounjaro while breastfeeding?

Do not take Mounjaro while breastfeeding. It is not known whether the drug is safe to use during this time, as the effects of Mounjaro on breast milk have not been researched. Phlo Clinic will not prescribe Mounjaro to you if you are breastfeeding.

Can you bring Mounjaro on a plane?

Yes, you can take Mounjaro on a plane. However, to ensure it arrives safely at your destination, you need to do a few things.

Firstly, keep it with you in your carry-on in a cool bag designed for medicine. The luggage hold may be too hot or too cold, affecting the drug's efficacy.

Secondly, keep it in its original packaging. This protects the medication from light and helps airport security to screen it.

Finally, you need to have documentation available if asked. This will make the security process much smoother and ensure it can travel with you. Take a look at our blog for more information on travelling with weight loss pens.

Remember, our clinical team is always on hand to answer any questions you might have throughout your Mounjaro journey. Get in touch for advice and support or head to our consultation page to get started.

Ready to start your Mounjaro journey?

Start a free consultation for the Mounjaro KwikPen today!

Review by:
Ting-Hoi Chan
2224138
|
Pharmacy Governance Manager
Last reviewed:
January 23, 2026
Next review:
January 23, 2027
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