About this medication
- Zepbound (tirzepatide) is an injectable medicine used together with a lower-calorie diet and more physical activity for long-term weight management in adults with obesity, or with excess weight plus a weight-related health problem.
- It is also used to treat moderate to severe obstructive sleep apnea in adults with obesity.
- It is not the same product as the tirzepatide used for diabetes (Mounjaro) — do not use one in place of the other.
Supports weight management in eligible adults with nutrition and activity measures.
How to use it
- Inject under the skin of your stomach, thigh, or upper arm once a week, on the same day each week, at any time, with or without food.
- Your dose is increased slowly over several months, starting at 2.5 mg, up to a maintenance dose chosen by your prescriber (as high as 15 mg once weekly) — follow the schedule exactly and do not skip the slow increase.
- Rotate where you inject each week to avoid skin problems.
If you miss a dose
- If you miss a dose and it has been 4 days or less since it was due, take it as soon as you remember. If more than 4 days have passed, skip the missed dose and take your next dose on your regular scheduled day.
Start at the prescribed introductory dose; increases are separated by at least four weeks. Do not accelerate titration or duplicate tirzepatide products.
Pregnancy and breastfeeding
- Do not use this medicine if you are pregnant. Stop it at least 2 months before you plan to become pregnant.
- Breastfeeding is not recommended while using this medicine, since there is not enough information on whether it passes into breast milk.
Avoid pregnancy and discuss conception planning and breastfeeding with the prescriber.
Before you use it
- Tell your prescriber if you or a family member has ever had medullary thyroid cancer, or a condition called multiple endocrine neoplasia syndrome type 2 (MEN 2) — this medicine must not be used in that situation.
- Tell your prescriber if you have gallbladder disease, kidney problems, or are pregnant, trying to become pregnant, or breastfeeding.
Important warnings
- Get medical help right away for severe stomach pain that does not go away, especially if it spreads to your back, with or without vomiting — this can be a sign of pancreatitis.
- Get medical help right away for pain in the upper right side of your stomach, yellowing of the skin or eyes, or fever with stomach pain — these can be signs of a gallbladder problem.
- Get medical help right away for severe bloating, ongoing vomiting, or if you stop passing gas or having bowel movements — this can be a sign of a bowel blockage.
Review thyroid cancer/MEN 2 history, allergy and significant gastrointestinal disease.
Possible side effects
- Nausea, vomiting, diarrhea, constipation, and mild injection-site reactions. These are most common when starting or increasing your dose and usually ease with time.
Nausea, vomiting, diarrhoea and constipation.
When to get help
When to get emergency help
- Severe or worsening stomach pain, especially with vomiting or pain spreading to your back.
- Severe bloating, ongoing vomiting, or inability to pass gas or stool.
- Signs of a severe allergic reaction: swelling of the face, lips, tongue, or throat; difficulty breathing; widespread rash or hives.
When to contact a healthcare professional
- If you are not tolerating the nausea or other stomach side effects even after slowing down the dose increases.
Persistent severe abdominal pain, severe vomiting or dehydration needs assessment.
Other medicines and products
- This medicine can slow how quickly your stomach empties, which may change how well other oral medicines work, including birth control pills — discuss all your other medicines with the Care365 care team.
- If you also take insulin or a sulfonylurea diabetes medicine, your risk of low blood sugar may increase; your other diabetes medicine doses may need to be adjusted.
Review insulin, sulfonylureas and oral contraceptives; additional contraceptive precautions may be needed.
Missed doses, storage and accidental exposure
- Store new pens in the refrigerator. Do not freeze.
- Check the specific pen's package instructions for how long it can be kept at room temperature once in use.
- Dispose of used pens and needles in a sharps container, not the household trash.
Follow your own product’s missed-dose instructions. If you are unsure, ask the Care365 clinical team before taking an extra dose. Contraceptives, injections and modified-release medicines may need a specific plan.
Keep the original packaging and follow its storage, expiry and disposal instructions. Keep medicines away from children and pets. Ask about refrigeration, after-opening limits and safe sharps disposal when relevant.
For suspected overdose or accidental swallowing, contact poison control or urgent medical care promptly. Call emergency services for breathing difficulty, collapse or a seizure.
Key points to remember
- This is a long-term treatment, not a short course — weight regain is expected if it is stopped.
- This is a different product than the tirzepatide used for diabetes (Mounjaro); do not interchange them.
These practical points come from the Pharmasist patient handout for the same product monograph cited by this guide.