Tesamorelin

A Growth-Hormone-Releasing Peptide Therapy

What Is Tesamorelin?

Tesamorelin is a synthetic peptide that belongs to a class of compounds called growth hormone-releasing hormone (GHRH) analogs. Rather than supplying growth hormone (GH) directly, tesamorelin works upstream — it binds to GHRH receptors in the pituitary gland and stimulates the body’s own production and release of natural growth hormone. This, in turn, increases circulating insulin-like growth factor 1 (IGF-1), the hormone largely responsible for GH’s downstream effects on metabolism and tissue growth.

Tesamorelin is FDA-approved (brand names Egrifta®, Egrifta SV®, and Egrifta WR®) for the reduction of excess abdominal fat in adults with HIV-associated lipodystrophy. Because of its effects on visceral fat, lean body mass, and metabolic markers, it is also used off-label by physicians in medically supervised body-composition and healthy-aging programs. It is administered as a once-daily subcutaneous injection.

Important: Tesamorelin's only FDA-approved indication is reduction of excess abdominal fat in HIV-associated lipodystrophy. It is not FDA-approved as a general weight-loss medication. Any off-label use should occur only under the direct supervision of a licensed prescriber, with appropriate screening, labs, and monitoring.

Potential Benefits

Clinical studies (primarily in HIV-associated lipodystrophy) and physician-supervised off-label use have associated tesamorelin with the following effects. Individual results vary, and benefits depend on appropriate patient selection and consistent use:

Reduction of visceral adipose tissue (deep abdominal fat around the organs), the fat most strongly linked to metabolic and cardiovascular risk
Improvement in waist circumference and abdominal body composition
Increase in endogenous (the body’s own) growth hormone and IGF-1 levels, rather than introducing exogenous HGH
Favorable changes in triglycerides and other lipid markers in some patients
Support for lean muscle mass preservation during fat-loss programs
Improvements in overall body composition when paired with nutrition, resistance training, and a comprehensive weight-management plan

Tesamorelin has a weight-neutral effect in its approved indication — meaning it is not designed to produce dramatic scale-weight loss on its own. Its primary, best-documented value is in reshaping body composition (less visceral fat, preserved lean mass) rather than as a standalone weight-loss drug.

Dosing Guidelines

Dosing must always be individualized and directed by your prescribing physician. The information below reflects standard FDA-labeled dosing for reference and patient education only — it is not a substitute for your provider’s specific instructions.

Parameter	Standard Guidance
Route	Subcutaneous (SC) injection, typically into the abdomen
Frequency	Once daily, at approximately the same time each day
Dosing Recommendation	33 units (0.33 ml) daily
Injection site rotation	Rotate sites within the abdomen to reduce irritation and lipoatrophy risk
Reconstitution	Only the diluent supplied with the product should be used; follow pharmacy/product-specific mixing instructions exactly
Missed dose	Do not double up — resume the regular schedule at the next planned dose unless your provider advises otherwise

Before Starting Therapy

A baseline history and physical exam with your provider
Baseline IGF-1 level and relevant metabolic labs
Screening for contraindications, including active malignancy, pituitary or hypothalamic disease, and pregnancy

While on Therapy

Periodic follow-up labs (including IGF-1) to confirm the dose remains appropriate and safe
Monitoring for fluid retention, joint or muscle discomfort, and injection-site reactions — the most commonly reported side effects
Ongoing communication with your care team about how you’re responding and any new symptoms

This document is for general educational purposes and does not replace individualized medical advice. Tesamorelin is a prescription peptide therapy; only your prescribing physician can determine whether it is appropriate for you and what dose and monitoring plan you should follow.

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