Can I take Diazepam and Tirzepatide together?

Why this happens

Tirzepatide is a GLP-1 and GIP receptor agonist that delays gastric emptying (the rate at which food and pills leave the stomach). This can delay the absorption (Tmax) of oral medications like diazepam. There is also a potential for additive central nervous system (CNS) depression.

What you should do

Be aware that your diazepam might take longer to work than usual. Do not take extra doses if you don't feel the effects immediately. Be extra cautious when driving or using machinery until you know how this combination affects your alertness. If you feel excessively sleepy or your anxiety/seizures are not well-controlled, speak to your doctor.

Important precautions

Alcohol consumption

You must not drink alcohol while taking diazepam. Combining them can cause dangerously shallow breathing, extreme sleepiness, and can be fatal.

History of pancreatitis or severe stomach issues

Tirzepatide can cause severe inflammation of the pancreas (pancreatitis). Seek immediate medical help if you experience severe, persistent stomach pain that radiates to your back.

Long-term use and dependency

Diazepam is for short-term use only (usually 2-4 weeks). Using it longer can lead to physical addiction and severe withdrawal symptoms if stopped suddenly.

Driving and operating machinery

It is often an offence to drive while taking diazepam as it can seriously impair your coordination and reaction times. Do not drive or operate machinery until you know how this medicine affects you, and always keep the medicine in its original packaging to show the police if stopped.

Respiratory depression

Do not take diazepam if you have severe lung disease or breathing difficulties, as it can further slow your breathing to dangerous levels.

Pregnancy

Avoid use in late pregnancy or during labour, as it can cause 'floppy infant syndrome' and life-threatening withdrawal symptoms in the newborn.

Thyroid Cancer Risk

Do not use tirzepatide if you or any of your family have ever had a type of thyroid cancer called medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).

Severe Gastrointestinal Disease

Tirzepatide slows stomach emptying and is not recommended for patients with severe gastrointestinal diseases, such as gastroparesis (paralysis of the stomach).

Food and drink warnings

Alcohol

You must avoid drinking alcohol while taking diazepam. Alcohol increases the sedative effects of the medicine, which can lead to extreme sleepiness, dangerous breathing problems, and a risk of coma.

It is best to avoid or strictly limit alcohol while using tirzepatide. Both alcohol and tirzepatide can lower your blood sugar levels; combining them increases the risk of severe hypoglycaemia (dangerously low blood sugar). Additionally, both can cause nausea and vomiting, which may be worsened if taken together.

Grapefruit juice

Avoid drinking large amounts of grapefruit juice. Grapefruit can prevent your body from breaking down diazepam properly, leading to higher levels of the medicine in your blood and increasing the risk of side effects like drowsiness.

Caffeine (Coffee, tea, energy drinks)

Caffeine is a stimulant and can reduce the calming and sedative effects of diazepam. If you consume a lot of caffeine, you may find the medicine is less effective at treating anxiety or helping you sleep.

Using other medicines

Taking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Disclaimer

This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.