Intro of Mounjaro
Mounjaro is a once-weekly prescription injection in the incretin-based drug class, containing the active ingredient tirzepatide. It comes in single-use pens and is taken under a doctor’s guidance. Common side effects people ask about include nausea, vomiting, diarrhea, and decreased appetite. If you like clear instructions, easy pen training, and support with timing and storage, we’ve got you covered, just message us and we’ll walk you through it.

Mounjaro 2.5 毫克预装笔注射液 4s
Use the prefilled pen to inject under the skin of the tummy, thigh, or upper arm once a week on the same day, exactly as your doctor shows you. Do not share pens and always rotate injection sites.
Most adults start at 2.5 mg once weekly for 4 weeks, then usually move to 5 mg once weekly, with step-ups by 2.5 mg at least every 4 weeks as advised, up to a maximum of 15 mg once weekly. Your exact plan is set by your prescriber.
Check the expiry date printed on the pen carton and label and do not use after that date. Once kept at room temperature, follow the 21-day window and storage rules below.
Keep unused pens refrigerated at 2 to 8°C, do not freeze, and protect from light. If needed, a pen can be kept at room temperature up to 30°C for up to 21 days — once it passes 21 days or has been frozen, do not use it.
Tirzepatide.
Side effects of Mounjaro
恶心
呕吐
腹泻或便秘
Indigestion or belly discomfort
食欲下降
打嗝或放屁
注射部位发红或发痒
Fatigue, especially early on
Contraindications of Mounjaro
Do not use if you have a personal or family history of medullary thyroid carcinoma or if you have Multiple Endocrine Neoplasia syndrome type 2, or if you have had a serious allergy to tirzepatide or any pen ingredients. If any of these apply, talk to your doctor before ordering.
Drug & Food Interaction of Mounjaro
Mounjaro can slow stomach emptying and may affect how certain oral medicines are absorbed. Extra care is needed if you use insulin or sulfonylureas due to low blood sugar risk, and if you use oral birth control pills you may need backup contraception for 4 weeks after starting or after each dose increas, ask your prescriber or our pharmacist. Alcohol and very large meals may worsen tummy side effects.
Quick Tips of Mounjaro
- Pick one “weekly day” you can stick to and set a reminder
- If you miss a dose, you can take it within 4 days, otherwise skip and resume on your usual day
- Let the pen warm to room temp before use to reduce stinging
- Rotate injection sites and never share your pen
- Keep spares chilled and travel with cold-chain packs for Singapore deliveries

