₹1,300 vs ₹13,000: Which Weight Loss Injection Is Best?

A month of Mounjaro costs around Rs 13,000 in India. A vial of generic semaglutide now costs about Rs 1,300. That tenfold gap is why so many people are asking one question right now: which weight loss injection is best?

The honest answer depends on your body, your budget and your doctor. And for some people, a bariatric surgeon says the best option is not an injection at all.

Quick answer

• In trials, tirzepatide (Mounjaro) showed the biggest weight loss of the approved medicines, with about 20.9% at the highest dose over 72 weeks.
• Semaglutide (Wegovy, and the new generics) is now far cheaper, starting near ₹5,660 a month for Wegovy and lower for generics.
• Weight often comes back after stopping: people regain 50–70% of lost weight within a year on average.
• For severe obesity with conditions like diabetes, bariatric surgery remains a key option, says a surgeon quoted by Hindustan Times.

Which weight loss injection is best on results?

India has two main molecules for weight loss right now. Semaglutide is sold as Wegovy (and Ozempic for diabetes). Tirzepatide is sold as Mounjaro and Yurpeak.

Both are once-weekly injections and both need a prescription. They are Schedule H medicines, so you cannot legally buy them off the shelf.

On results, tirzepatide leads. In its main obesity trial, the average weight change at week 72 was about 15.0% on the 5 mg dose and 20.9% on a higher dose. The placebo group lost only 3.1%.

Wikipedia's summary of obesity treatment puts it simply: tirzepatide has shown the greatest weight reduction of the approved medicines.

But "best" is not only about the biggest number. A drug you cannot afford for more than two months will not help much.

The price gap that changed India's market

Prices moved fast this year. Novo Nordisk cut Ozempic and Wegovy to start at Rs 5,660 from April 1. Before that, they cost Rs 8,800 and Rs 10,848, Forbes India reports.

Then generics arrived. Torrent, Dr. Reddy's, Zydus, Lupin and Sun Pharma launched semaglutide on March 21. Vials came in at Rs 1,300 and injectable pens at Rs 1,800.

Mounjaro did not cut its price. Its 2.5 mg starter pen costs 13,125 rupees a month, and the top strengths reach 25,781 rupees, according to PharmEasy's October list.

Bar chart of monthly costs in rupees: generic semaglutide 1,300, Wegovy starter 5,660, Mounjaro starter 13,125, Mounjaro top dose 25,781

Source: Forbes India, PharmEasy

The market noticed. Mounjaro's sales in India fell from roughly Rs 135 crore in February to Rs 114 crore in March, just days after the generics landed. Semaglutide sales rose to Rs 59 crore from Rs 48 crore in the same month.

So if price is your main filter, semaglutide generics win by a mile. If maximum weight loss is the goal and money is not a problem, tirzepatide has the stronger trial numbers.

The catch nobody puts on the box

These medicines do not work the same way for everyone, says Dr Vivek Bindal, a bariatric and robotic surgeon at Max Super Specialty Hospital, Ghaziabad, in Hindustan Times.

Long-term treatment may be needed. Side effects, cost, access and sticking with the plan all change outcomes. Some people regain weight after stopping.

How much? After stopping GLP-1 drugs like semaglutide, liraglutide and tirzepatide, people regain on average more than half, 50–70%, of the lost weight within a year.

Side effects are mostly digestive: nausea, vomiting, diarrhoea and constipation. In the tirzepatide trials, 25% of people on the 15 mg dose stopped treatment, against 5.1% on the 5 mg dose.

That is why every guideline pairs these drugs with diet, exercise and behaviour support, not instead of them.

When surgery still beats the injection

Obesity is a chronic, relapsing disease linked to type 2 diabetes, high blood pressure, sleep apnoea, fatty liver and joint problems, Dr Bindal says.

For severe obesity with these conditions, he calls metabolic and bariatric surgery the cornerstone for people who need large, lasting weight loss.

The long-term data backs that. One study found weight loss of 14% to 25% at 10 years after surgery, depending on the procedure, and a 29% drop in deaths from all causes compared with standard methods.

His own team's results with robotic surgery covered 545 patients. The 30-day complication rate after discharge was 2.02%, and average BMI fell from 44.55 to 32.68 in a year.

Surgery is usually recommended only for people with a BMI above 40 who have not lost weight with diet and medicines. It is a big step, and follow-up care for life is part of the deal.

It does not have to be one or the other

The most useful point from the surgeon: the choice is no longer pills versus the operating table.

A patient may use medicine before surgery to get healthier for the operation. Another may need medicine years later if weight creeps back. Treatment can change as your needs change.

For most readers, the practical path looks like this:

1. Get a proper check-up first: BMI, blood sugar, liver and blood pressure.
2. Ask your doctor whether semaglutide or tirzepatide fits you, and which strength.
3. Price the full plan, not just the starter pen, since doses go up over months.
4. Keep up protein, strength training and walking so you keep muscle.
5. Plan what happens when you stop, so the weight does not come back.

Who should be careful

People with diabetes, PCOS, kidney disease, a history of pancreatitis, or who are pregnant or planning pregnancy must talk to a doctor first. Never buy these injections without a prescription or from unverified sellers.

FAQs

Which weight loss injection is best for most Indians? There is no single best. Tirzepatide (Mounjaro) showed bigger weight loss in trials, while semaglutide (Wegovy or generics) is much cheaper. Your doctor should pick based on your health and budget.

How much does Mounjaro cost per month in India? About 13,125 rupees for the 2.5 mg starter pen, rising to 25,781 rupees for the top strengths, per PharmEasy's October prices.

Will I gain the weight back after stopping? Many people do. On average, people regain 50–70% of lost weight within a year of stopping GLP-1 drugs.

Can an injection replace bariatric surgery? Not for everyone. For severe obesity with diabetes or sleep apnoea, a surgeon told Hindustan Times surgery remains a key option, sometimes combined with medicine.

This article is for information only and is not medical advice. Talk to a doctor before changing your diet or training.

Sources

• Hindustan Times: Can new weight-loss drugs really replace bariatric surgery?
• Forbes India: Mounjaro's sales dip as cheap generics redraw India's GLP-1 market
• PharmEasy: GLP-1 comparison of India brands and costs
• PharmEasy: Mounjaro price in India
• Wikipedia: Management of obesity
• Wikipedia: Tirzepatide