Tesamorelin Injection: Uses, Dosage, Side Effects, and Mechanism

What Is Tesamorelin Injection?

Tesamorelin is an artificially produced hormone that helps regulate the breakdown of fat in our bodies. It is a synthetic version of the precursor of our growth hormone. If you are taking anti-retroviral therapy, fat metabolism in your body will be hampered. As a result, you can see fat present in some unusual locations in your body. Tesamorelin helps remove excess fat from your body.

What Does Tesamorelin Do?

If you are suffering from the human immunodeficiency virus (HIV), the doctor will advise you to undergo antiretroviral therapy. This therapy can help eliminate the virus from the body. However, this therapy is known to alter the body's metabolism. As a result, you will notice a change in the processing of fat in your body. This leads to excess fat in various areas of your body. This causes issues such as obesity, body inflammation, fatty liver, and liver fibrosis. Also, this can cause insulin resistance. Tesamorelin results in excess fat reduction. It also helps to fight fat-related liver damage and insulin resistance.

Is Tesamorelin Safe?

Tesamorelin is a Food and Drug Administration (FDA) approved drug. It got its FDA approval in March 2025. However, your doctor should assess your medical condition before prescribing it.

How Does Tesamorelin Work (Mechanism of Action)?

If you are taking anti-retroviral medicine for HIV, you might suffer from dysfunction in lipid metabolism. This causes an abnormal presence of fat in various parts of your body. Also, it causes abnormal lipid levels in your blood. This is called lipodystrophy. Additionally, this can lead to fatty liver disease and insulin resistance.

Tesamorelin is an artificially made compound from amino acids. It acts like growth hormone-releasing hormone (GHRH), which acts on pituitary cells of the brain. Tesamorelin works by increasing the release of growth hormone. This hormone helps to produce insulin-like growth factor-1 (IGF-1). This crucial substance regulates various bodily processes. This helps in fat metabolism and lipid processing. As a result, it helps eliminate unwanted fat from your body. Also, this helps regulate your blood sugar levels.

What Are the Indications of Tesamorelin?

Doctors prescribe you anti-retroviral therapy (ART) for HIV treatment. You will take different nucleoside reverse transcriptase inhibitors (NRTIs), such as Zidovudine (AZT), Stavudine (d4T), and Didanosine (ddI), in such cases. These medicines cause abnormal fat metabolism in your body. Also, they lead to fat loss in areas such as your face, cheeks, chin, legs, and buttocks. However, you will notice excessive fat deposition in the abdomen, waist, and neck region. Also, you will reduce insulin resistance, blood sugar levels, and triglyceride levels. Tesamorelin benefits in such cases where you experience abnormal lipid metabolism due to ART therapy.

What Is Tesamorelin Used For?

Tesamorelin is used for the following cases:

• If you are facing abnormal fat deposition due to defective lipid metabolism during your ART therapy period.
• If you are facing a rise in blood sugar level or triglyceride level during your HIV treatment phases.
• However, you should not use Tesamorelin for weight loss.

What Are the Dosages of Tesamorelin?

There are two formulations of Tesamorelin available. Their strengths and Tesamorelin dosage cycles differ. While the Tesamorelin dosage for one formulation is 1.4 milligrams per day, the dosage for another formulation is 1.28 milligrams per day. The vial strengths of both formulations differ. As you cannot interchange these formulations, you should follow the Tesamorelin dosage chart your doctor has advised.

A trained nurse or health care provider gives you this injection into the fatty tissue under your skin in your stomach area. They choose different places every day for the injection.

What Are the Side Effects and Warnings of Tesamorelin?

Tesamorelin side effects are:

• You may feel irritation, itching, or a burning sensation at the injection site.
• An allergy to Tesamorelin can cause redness, itching, and a burning sensation all over your body. Also, you can feel blistering or bruising in your skin.
• Tesamorelin can prevent fluid from leaving your body. As a result, you can experience joint pain, swelling in the leg, and difficulty in moving your hand.
• Doctors do not give Tesamorelin to patients who are suffering from cancer as it can worsen the condition. Also, if you have a previous history of any kind of tumor, you should not take it.

Other minor side effects of Tesamorelin include body pain, palpitations, night sweats, and vomiting.

Warnings:

• Tesamorelin increases IGF-1 levels in the body. During treatment, the doctor should monitor this level. A consistent high level of IGF-1 can cause cancers.
• If you are pregnant, you should not take this. This can harm your unborn child in the womb.
• If you already have any issues in your hypothalamic-pituitary axis due to surgery or injury, you should not take it.

What Are Safety Precautions for Tesamorelin?

Certain precautions must be maintained during Tesamorelin treatment.

1. As a patient, watch for symptoms such as ankle or leg swelling, joint pain, and facial puffiness. This can indicate fluid retention in your body.
2. During Tesamorelin therapy, the doctor must check your IGF-1 level regularly. A persistent rise in your IGF-1 level can be dangerous for you.
3. Tesamorelin can affect your blood sugar level. As a result, regular monitoring of your blood sugar level is essential.
4. If you are experiencing serious allergic reactions, such as swelling of the face, severe itching, or skin exfoliation, you should inform your doctor immediately.

What Are the Tesamorelin Alternatives?

Tesamorelin alternatives depend on the clinical condition and the patient's needs.

1. If your focus is on weight loss, a doctor can advise you to take GLP-1 (Glucagon-Like Peptide-1) agonists like Semaglutide.
2. Sermorelin is similar to Tesamorelin and can act on your growth hormone levels.
3. Ipamorelin is another medicine that acts on your growth hormone and stimulates its production.
4. AOD9604 (Anti-Obesity Drug 9604) is another compound that can help with your weight loss.

However, you should contact your doctor before using these medicines.

Conclusion

If you are taking anti-retroviral therapy, it can affect your fat metabolism. As a result, you notice the presence of extra fat in your body. This raises your blood sugar and lipid levels, too. Tesamorelin is a precursor of our growth hormone. It alters your metabolism and helps remove excess fat. However, this medicine is not safe for all, especially if you are pregnant. For any further queries, you can talk to an HIV specialist for a proper evaluation.

Key Takeaways

• Anti-retroviral therapy in HIV causes abnormal deposition of fat in the body.
• This raises your lipid profile and blood sugar levels.
• Tesamorelin is a form of our growth hormone that helps regulate fat metabolism and remove excess fat from the body.
• It also improves lipid profile in the blood.