Is Tesamorelin or Semaglutide Better for Belly Fat?

No study has compared tesamorelin and semaglutide head to head, so neither tesamorelin nor semaglutide is proven better for belly fat. Tesamorelin shrinks the deep fat around the organs, and it is FDA approved for adults with HIV-related fat changes. Semaglutide cut both total body fat and deep belly fat in a 68-week trial where most participants were women.

What does tesamorelin do to belly fat?

Belly fat comes in two kinds. Visceral fat sits deep around your organs. Subcutaneous fat sits under the skin, and it's the soft part you can pinch. Tesamorelin and semaglutide affect them differently, so keep both in mind.

FDA approved tesamorelin, sold as Egrifta, to reduce excess belly fat in adults with HIV who have lipodystrophy, a shift in body fat linked to HIV treatment. The Egrifta WR label also states that tesamorelin is not indicated for weight loss management.

In a year-long trial in adults with HIV, 404 people took part. Deep belly fat fell 10.9% over six months on tesamorelin, against 0.6% on placebo. People who stayed on tesamorelin for 12 months had about 18% less deep fat. Fat under the skin of the belly did not change. People on tesamorelin also felt less unhappy with how their belly looked.

A 2026 review of five placebo-controlled trials in adults with HIV found that tesamorelin cut deep belly fat and trimmed the waist by about 1.6 cm more than placebo. It also added about 1.4 kg of lean mass. Fat under the skin and BMI did not drop significantly.

The deep-fat loss faded quickly once people stopped. In the same year-long trial, people who switched from tesamorelin to placebo soon lost the improvement they had gained.

Outside HIV, the evidence is thin. In a 12-week trial in adults with type 2 diabetes, tesamorelin made no significant difference to weight, body fat or waist size compared with placebo.

What does semaglutide do to belly fat?

In a 68-week body composition study, 140 adults with overweight or obesity took a weekly semaglutide 2.4 mg injection or a placebo. Of those adults, 76% were women. People on semaglutide lost 15.0% of their body weight, against 3.6% on placebo.

The weight loss included fat, and that fat included the deep kind. On semaglutide, total body fat fell 19.3% and deep visceral fat fell 27.4%.

Some muscle and other lean tissue came off too, with lean mass down 9.7%. Fat dropped more than lean tissue did, so the lean share of the body went up by 3 percentage points. The people who lost the most weight saw the biggest improvement in their balance of lean tissue to fat.

A second 68-week trial, STEP 6, measured deep belly fat on scans in Japanese adults with obesity. Visceral fat area fell 40.0% on semaglutide 2.4 mg, against 6.9% on placebo.

Which one fits a woman who wants a flatter stomach?

The deep-fat numbers come from different people, different lengths of treatment and different scans. Tesamorelin cut deep fat by about 18% at 12 months, and semaglutide cut it by 27.4% to 40% at 68 weeks. Read those numbers side by side, not as a contest.

If your belly is part of wanting to lose weight overall, semaglutide is the option that has been tested in women in your situation. Semaglutide shrank deep fat and total fat together. Tesamorelin works mainly on deep fat, and the evidence for it comes from adults with HIV.

What are the side effects of tesamorelin and semaglutide?

Tesamorelin can raise blood sugar. In its trials, 5% of people on tesamorelin developed diabetes-range HbA1c (a blood test that reflects your average blood sugar over about three months), against 1% on placebo, according to the Egrifta WR label. Your blood sugar gets checked before and during treatment.

Joint pain and swelling in the arms, hands, legs and feet are common on tesamorelin. Tesamorelin can also cause pain or numbness in the hands or wrists from carpal tunnel. The label says not to use tesamorelin if you are pregnant or planning to be, have active cancer, have pituitary problems, or have blood sugar problems or diabetes. The label also says the long-term heart and blood vessel safety of tesamorelin has not been established.

Semaglutide slows how fast your stomach empties. Food can stay in your stomach longer, which may raise the risk of breathing it into your lungs during surgery or an endoscopy. If you have a procedure coming up, tell your clinical team and the team doing the procedure that you take semaglutide.

How much does semaglutide cost per month?

Of 30 US telehealth programs, 16 published month-to-month prices for compounded semaglutide. Those prices ran from $99 to $348 a month, and the middle price was $175.

Longer plans cost less per month. On the longest plan each program offered, compounded semaglutide ran from $89 to $298 a month, and the middle price was $119. The cheap headline price is often the long-plan rate, so check which one you are looking at.

Compounded medicines are made to order by a pharmacy. They are not FDA-approved, and FDA does not review them for safety or effectiveness.

You want a flatter stomach and jeans that fit again. Take the quiz, and our clinical team will look at your answers and see whether semaglutide fits your goal.