Key points
- 12.5 mg is the step-up dose of Mounjaro.
- One 12.5 mg KwikPen holds four weekly doses; MRP ₹25,781.
- Doses go up in 2.5 mg steps, at least four weeks apart, only on your doctor's advice.
- Your doctor decides when, or whether, to step up.
What Mounjaro 12.5 mg is for
12.5 mg is a step-up dose: it sits between the treatment doses and is used for at least four weeks on the way up. Moving up in 2.5 mg steps gives your body time to adjust, which helps with nausea and other stomach side effects.
Mounjaro 12.5 mg price in India
One Mounjaro 12.5 mg KwikPen has four weekly doses and an MRP of ₹25,781, so a month of treatment at this strength costs about ₹25,781, or around ₹6,445 a week. It costs the same as the 15 mg pen.
* Prices are manufacturers' maximum retail prices (MRP) in India, checked October 2026, and are shown as a guide only. Prices change often and may differ when you buy. Lean Life does not sell medicines online: any medicine is prescribed only after a consultation with a Lean Life doctor, and dispensed by a licensed pharmacy.
Work out your first-year cost with our calculator, or see every strength and medicine side by side.
Weight loss at 12.5 mg
12.5 mg was not studied as a long-term dose in the main weight-loss trial, because it is a stepping stone. Weight loss usually starts in the first weeks and builds as the dose goes up. Your doctor and dietitian look at your InBody results, not just the scale, to judge how you're doing.
Side effects at this stage
Stomach side effects such as nausea, diarrhoea, constipation and reduced appetite are most likely in the weeks after starting or moving up a dose. They are usually mild to moderate and settle as your body adjusts.
- Eat smaller meals and stop when you feel full.
- Choose plain, protein-rich food and drink plenty of fluids.
- Tell your doctor if vomiting or diarrhoea doesn't settle, or you can't keep fluids down.
- Get urgent help for severe stomach pain that spreads to your back, which can be a sign of pancreatitis.
Read the full side effects guide.
Missed a dose?
If it's been 4 days (96 hours) or less since you missed it, take it as soon as you remember. If it's been more than 4 days, skip it and take the next one on your usual day. Never take two doses within 3 days of each other. Our missed-dose checker works it out for you.
Storing your pen
Keep unopened pens in the fridge (2°C to 8°C), never in the freezer. Once you've started a pen, it can be kept at up to 30°C for up to 30 days, then thrown away even if a dose is left. In an Indian summer, keep it in the fridge or a cool bag rather than in a car or bag in the sun.
Getting Mounjaro 12.5 mg safely
- Buy only with a prescription, from a licensed pharmacy. Never from social media sellers, gyms or salons.
- Check the pack is sealed, the batch number and expiry date are printed clearly, and the price is not far below MRP.
- Pens should arrive cold, in insulated packaging.
- If anything looks wrong, don't inject it. Show it to your pharmacist or doctor.
Questions
What is the price of Mounjaro 12.5 mg in India?
The MRP of a Mounjaro 12.5 mg KwikPen is ₹25,781 for four weekly doses, about ₹6,445 a dose (October 2026). Prices change, so check at the pharmacy.
How long do I stay on 12.5 mg?
At least four weeks before any increase. After that, your doctor decides whether to stay or move up, based on your weight loss, your side effects and how you feel.
Can I change my dose myself?
No. Dose changes should always be made with your doctor, who checks your side effects and progress first.
References
- Jastreboff AM et al. Tirzepatide once weekly for the treatment of obesity (SURMOUNT-1). N Engl J Med 2022
- Mounjaro summary of product characteristics, European Medicines Agency
- Lilly Medical. How should the Mounjaro KwikPen be stored?
- Lilly Medical. Gastrointestinal adverse events in tirzepatide weight-management studies
- Indian maximum retail prices checked October 2026
