Learn how to inject tesamorelin safely: subcutaneous injection sites, needle size, technique, timing, and side effects to discuss with your doctor.
Tesamorelin is injected subcutaneously once a day, usually into the fat layer of the abdomen or the front of the thigh, using a short insulin-style needle. The dose on your prescription is mixed from a lyophilized powder with the sterile diluent supplied in the kit, then injected slowly into a pinched fold of skin. Technique matters because a clean, consistent subcutaneous injection reduces irritation and keeps dosing accurate.
Tesamorelin (brand name Egrifta WR) is FDA-approved in the United States to reduce excess visceral abdominal fat in adults with HIV-associated lipodystrophy. It is not approved for general weight loss, and compounded tesamorelin sold online without a prescription is not FDA-approved. A licensed prescriber should supervise every part of the process, from reconstitution to rotating injection sites.
What Tesamorelin Is and Who It Is Prescribed For
Tesamorelin is a growth hormone-releasing hormone (GHRH) analog that signals the pituitary gland to release growth hormone. The FDA approved it in 2010 for HIV-associated lipodystrophy, the abnormal redistribution of body fat that affects some people living with HIV.
Tesamorelin is a prescription medication in the US, not an over-the-counter peptide. The FDA has warned about compounded versions marketed as tesamorelin injections without approval. Anyone considering this drug should begin with a physician who can confirm the diagnosis and screen for contraindications such as active cancer, pregnancy, or uncontrolled diabetes.
Supplies You Need Before Injecting Tesamorelin
Gather everything on a clean, flat surface with good lighting before you open the vial. Tesamorelin is supplied as a powder, so reconstitution comes first.
- Tesamorelin powder vial, left at room temperature for 10 to 15 minutes
- Sterile or bacteriostatic water diluent provided with the kit
- Alcohol swabs and a puncture-proof sharps container
- Insulin syringes with 29- to 31-gauge needles, 5/16 inch to 1/2 inch long
- Gauze and soap or hand sanitizer
Never share a vial, syringe, or needle with another person, even a household member. If you are also researching other compounds, guides such as how to inject cjc 1295 ipamorelin and how often to inject ipamorelin walk through similar subcutaneous technique, but every peptide has its own dose and safety profile.
Where to Inject Tesamorelin: Choosing an Injection Site
The tesamorelin injection site should be an area of subcutaneous fat you can see and pinch easily. Where to inject tesamorelin generally comes down to three reliable options: the abdomen, the front thigh, and the upper outer arm. Rotating among them keeps one spot from becoming sore or lumpy.
| Injection Site | How to Find It | Notes |
|---|---|---|
| Abdomen | At least 2 inches away from the navel, on either side | Easiest for self-injection; avoid scars, stretch marks, and bruises |
| Front thigh | Middle outer third of the thigh, while seated | Useful when the abdomen is tender |
| Upper outer arm | Fatty area on the back of the arm below the shoulder | Usually requires a helper |
| Upper outer hip or buttock | Upper outer quadrant | Also requires a helper |
Subcutaneous means into fat, not into muscle. Injecting into muscle can change how quickly the drug is absorbed and often causes more discomfort. Move at least one inch from your last site each day.
How to Administer Tesamorelin: Step-by-Step
Injecting tesamorelin follows the same basic steps as any subcutaneous peptide injection. Work slowly and keep the needle sterile.
- Wash your hands thoroughly and set out your supplies.
- Reconstitute the powder with the diluent according to the label. Swirl gently; do not shake, because shaking can damage the peptide.
- Draw the prescribed dose into the syringe and tap out air bubbles.
- Clean the injection site with an alcohol swab and let it air-dry for about 10 seconds.
- Pinch a fold of skin, insert the needle at a 45- to 90-degree angle, and push the plunger slowly over 2 to 5 seconds.
- Withdraw the needle, press the spot with gauze, and do not rub or massage it.
- Dispose of the syringe in a sharps container immediately.
Rubbing the site can increase bruising and irritation. If you see blood, apply light pressure for a few seconds and continue with your normal routine.
Timing, Dose, and Storage
Tesamorelin is given once daily at roughly the same time each day, and many clinicians suggest an evening injection. Follow the dose printed on your prescription exactly, because dosing is not something to adjust on your own. Dosing questions vary widely between products, which is why a question like how much lipo-c to inject per day has a completely different answer than a fixed tesamorelin prescription.
Store unopened vials as directed on the packaging, usually refrigerated, and use reconstituted solution within the window your pharmacist specifies. Keep the vial out of direct light, and never use a solution that looks cloudy or contains particles.
Side Effects and Safety
Common side effects of tesamorelin include injection site reactions, joint pain, muscle aches, swelling, and numbness or tingling in the hands. Some people see increases in blood sugar or allergic reactions, which need prompt medical attention.
Tell your healthcare professional about every medication and supplement you take before starting tesamorelin injections. Do not use tesamorelin during pregnancy, and report any severe or persistent symptom rather than waiting it out. Not every injectable sold online is legitimate; compounds such as melanotan II, discussed in resources like how to inject melanotan ii, are not FDA-approved and carry their own risks.
Tesamorelin is a prescription drug, and unsupervised use of unapproved or compounded versions carries real safety and legal risk.
If you are injecting tesamorelin at home, keep a simple log of dates, sites, and doses. Bring it to follow-up visits so your clinician can track results, adjust treatment, and catch problems early.
RELATED PEPTIDE TOPICTesamorelin peptideFrequently Asked Questions
Where do you inject tesamorelin?
Tesamorelin is injected into subcutaneous fat, most commonly the abdomen at least two inches from the navel, the front of the thigh, or the upper outer arm. Rotate to a different spot each day so the same area is not used repeatedly. Avoid skin that is bruised, scarred, or irritated.
What size needle do you use for tesamorelin?
Most people use a 29- to 31-gauge insulin syringe with a needle 5/16 inch to 1/2 inch long, which is designed for subcutaneous injections. Your prescriber or pharmacist can confirm the right length for your body composition. Never reuse a needle or syringe.
How often do you inject tesamorelin?
Tesamorelin injections are given once daily, and many clinicians recommend a consistent time in the evening. The dose is set by your prescriber and should not be changed without medical guidance. Handle missed doses according to the instructions on your prescription label.
This page provides educational research information and does not replace medical advice, diagnosis, or treatment.