Tesamorelin dosage: the amounts studied in people
Tesamorelin is a shot studied mainly among people with HIV. This page covers research amounts, timing, and safety limits, not personal directions for you.
What tesamorelin dosage means in these studies
This page has one purpose: report what researchers did. It doesn't tell you how to give the drug. The common amount was tesamorelin 2 mg once a day [1][5]. Researchers gave a shallow shot into belly fat, not a vein.
The drug level fell within minutes. IGF-1, a liver-made hormone tied to growth, could stay raised all day [11]. That timing led researchers to test one shot each day.
A vial marked for lab research isn't approved medicine. This page gives no directions for giving it.
Which tesamorelin dosage researchers tested
The best-studied plan had a daily shot of tesamorelin 2 mg. Both main Phase 3 studies used that amount [1][2][5]. This was a large, late test before approval. It's also the amount the FDA approved. Another study tested a lower 1 mg per day for memory. A separate study compared that with 2 mg in people with type-2 diabetes [2]. Most proof about deep fat comes from the daily amount.
Researchers placed tesamorelin under the belly skin [1]. With 2 mg per day, deep fat stayed 18% below the start through 52 weeks [2]. Blood tests showed the expected rise in IGF-1 [11].
These facts aren't directions. Most participants had HIV. The study amount isn't your personal schedule.
What affects the tesamorelin shot after mixing
Three facts shaped the study plan. First, the drug level falls fast. A math model compared that drop with drug-free blood. Its rate was near 1,060 liters each hour. That isn't blood loss or body size. The high model rate means the drug fell quickly. Other papers put the halfway point at 26–38 minutes [11].
Second, one added piece slows the body's breakdown of tesamorelin. The natural brain message breaks apart within minutes. The added piece guards the drug's weak spot [1].
Third, approved medicine comes as dry powder with liquid added before the shot. The FDA label calls for cold storage. The source used here says mixed medicine has a time limit, but doesn't give that limit [1]. A pharmacist would need to check the current label.
The drug level falls fast. IGF-1 stays raised longer [11].
Who received tesamorelin in the dose studies
A study amount first applies to the people studied. Nearly every tesamorelin dose study followed adults receiving HIV care. Those adults also took HIV medicine.
The 2 mg per day amount appeared in a 26-week study of 412 people [1]. The same amount appeared in the 52-week follow-up [2]. A liver-fat study included 50 adults [3]. Two other studies supplied facts from 806 people [10]. In 2026, one review combined five studies [13].
One small study included people without HIV. That was a 13-man study [4]. No large study has tested ordinary fat loss in the wider public.
The papers call 2 mg per day the studied amount for HIV-related fat buildup. White people had better odds of reaching the study's lower-fat mark. So did people who began with high blood fat. People with several linked heart and sugar risks also had better odds of reaching it. That mark was below 140 centimeters squared of deep fat [10]. It describes one scan slice, not waist size or better health.
A lab vial may not match approved medicine in strength or cleanliness. It also lacks doctor and pharmacy checks. Tesamorelin is banned in sport.
What tesamorelin side effects need watching
The hormone warning has two parts.
- Tesamorelin raises growth hormone.
- The liver then raises a hormone that helps cells grow.
The federal label warns about both rises. Too much growth hormone may cause water gain or trouble with blood sugar. The liver-made hormone can help normal cells and cancer cells grow. The studies also reported shot-site reactions. This source gives no count or details, so it can't say how common or severe they were.
Blood sugar changed little in the studies. Among 13 healthy men, fasting sugar didn't clearly change [4]. Their bodies still answered insulin. Over 52 weeks, blood sugar changes didn't clearly matter in the HIV study [2].
A federal review found no clear liver harm from tesamorelin [5]. The label bars the drug during active cancer. Pregnancy and a known allergy are other reasons the label bars it.
Deep belly fat can return after treatment ends [2][6]. Your health history changes how these warnings apply.