Ipamorelin
Growth Hormone Support Lean Muscle & Recovery
Earn the muscle, then keep it.
Tesamorelin 20 mg
$185
High-purity Tesamorelin for the fat around your organs. For adults who carry extra fat deep in the belly, the people its trials studied.
- 99% purity or higher
- Sterile, tested by PCR
- Non-pyrogenic, tested by LAL
- Tested in the USA
- Free shipping in Mexico
- Pay by SPEI bank transfer
Your dose, on the dial.
The dial counts in units of 0.01 mL: 10 units is 0.10 mL, and 100 units, the most one press gives, is 1 mL. How much peptide a unit holds depends on the pen’s strength, so the same number of units gives a different dose on each pen. Enter the dose your doctor gave you to see how many units to set.
Enter your dose to see the number to set.
About Tesamorelin
What Tesamorelin is
Tesamorelin is a peptide built to act like the hormone that tells your body to release growth hormone. It acts on the fat deep in the belly, around the organs, rather than the fat under the skin.
Most of its evidence comes from adults with HIV who carry extra fat around the organs, given a daily injection under the skin.
What Tesamorelin is studied for
- Fat around the organs: Studied in a large 26-week trial of 412 adults with HIV and extra belly fat.
- Without HIV: Studied in a year-long trial of 60 adults with belly fat and low growth hormone.
- Liver fat: Studied in people with HIV and a fatty liver.
What the research shows.
Tesamorelin is built to act like the hormone that tells your body to release growth hormone. Most of its evidence comes from adults with HIV who carry extra fat deep in the belly, around the organs, given a daily injection under the skin. Each study used its own supply, dose and schedule, so its results describe that study rather than promise what this pen will do.
Fat around the organs
Large trials, Under the skin
In a 26-week trial of 412 adults with HIV and extra belly fat, the fat around their organs fell by 15.2% on tesamorelin, while it rose by 5.0% on a placebo. Their body weight did not change.
Without HIV
Small studies, Under the skin
In a year-long trial of 60 adults with belly fat and low growth hormone, but no HIV, the fat around the organs fell on tesamorelin and rose on a placebo.
Liver fat
Small studies, Under the skin
In people with HIV and a fatty liver, the fat in the liver fell by 37%.
How every lot is tested
Every lot of Tesamorelin goes through three tests before it is sold.
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Every lot is 99% pure or more, and your pen’s exact purity is printed on its tube.
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Every lot we sell has passed the sterility test: no bacteria or other microbes were detected.
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Every lot we sell has passed the test for endotoxins, traces of bacteria that can cause fever after an injection.
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An independent laboratory in the USA runs every test.
Side effects and cautions
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The fat came back after people stopped: within six months, the fat around the organs had grown again by 16% to 22%.
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Side effects include joint pain from fluid in the tissues, and the risk of developing diabetes was about three times that on a placebo. Its label rules it out during pregnancy and for anyone with active cancer.
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Studies that gave healthy older adults growth hormone itself found about 2 kg more lean mass and 2 kg less fat, but no gain in strength, and more swelling, joint pain and diabetes.
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The World Anti-Doping Agency bans tesamorelin in sport at all times, so an athlete who is tested for doping and uses this pen risks a violation.
Source: World Anti-Doping Agency, Prohibited List 2026 (opens in a new tab)
Allergy warning
Don’t use Tesamorelin if you have ever had an allergic reaction to it or to anything else in the pen. Get help straight away if you have swelling of the face, lips or throat, trouble breathing, or a rash that spreads after an injection.
Pregnancy and breastfeeding
Don’t use Tesamorelin if you are pregnant: its label rules it out during pregnancy. Talk with your doctor first if you are breastfeeding or trying to become pregnant.
Medicines and health conditions
If you take any medicine or have a health condition, talk with your doctor before using Tesamorelin, and tell them you use it.
Cancer
Its label rules it out for anyone with active cancer. Talk with your doctor first if you have had cancer.
Blood sugar
In its trials, the risk of developing diabetes was about three times that on a placebo. Talk with your doctor first if you have diabetes or high blood sugar.
Joints and swelling
It can cause joint pain and swelling from fluid in the tissues.
Age
For adults 18 and over.
Frequent questions
Is Tesamorelin right for me?
Tesamorelin has been studied most in adults with HIV who carry extra fat around the organs, and in a smaller trial of adults without HIV. Whether it suits you depends on your health and your goal, so talk with your doctor before you start.
How often is Tesamorelin taken?
In its trials, Tesamorelin was taken once a day by injection under the skin. Follow the schedule your doctor sets.
Will I lose weight on Tesamorelin?
Tesamorelin acts on the fat around the organs, not on body weight. In its main trial, body weight did not change.
What happens when I stop?
In its trials, the fat around the organs came back after people stopped: within six months, it had grown again by 16% to 22%.
What side effects can Tesamorelin cause?
Side effects include joint pain, swelling from fluid in the tissues, and reactions where it is injected. The risk of developing diabetes was about three times that on a placebo.
What testing does Pure99 complete for Tesamorelin?
Every lot of Tesamorelin is tested by an independent laboratory in the USA before it is sold. The laboratory measures its purity by HPLC, tests it for bacteria and other microbes by PCR, and measures its endotoxins by LAL. Endotoxins are the toxins bacteria leave behind even in a sterile solution, and they can cause fever and aches after an injection.
How much Tesamorelin should I take?
Take Tesamorelin only as your doctor directs: Pure99 doesn’t recommend a dose. The pen’s dial counts in units of 0.01 mL, from 1 to 100 a press, and the same number of units gives a different dose on each pen. The dose guide on this page turns your dose into the number of units to set.
How many doses are in one Tesamorelin pen?
Every pen holds 3 mL, which is 300 units on the dial. How many doses that makes depends on your dose: the dose guide on this page shows how many doses of your size a pen holds.
