Tesamorelin is a synthetic growth hormone-releasing hormone (GHRH) analog primarily used to reduce excess visceral abdominal fat in HIV-infected patients with lipodystrophy. It improves body composition by decreasing deep belly fat, enhancing metabolic profiles (reducing triglycerides/cholesterol), and potentially increasing lean muscle mass. 

Key benefits of tesamorelin include:

Significant Visceral Fat Reduction: Clinical studies show a significant reduction in visceral adipose tissue (deep belly fat) of approximately 15-18% over 26 to 52 weeks of treatment.

Improved Metabolic Health: It lowers triglycerides and non-HDL cholesterol, and increases adiponectin levels, which can help manage fat and glucose metabolism

Increased Lean Muscle Mass: It can aid in improving overall body composition by increasing muscle mass, often noticed around 4–6 weeks of treatment.

Reduction in Liver Fat: Studies indicate that it may reduce liver fat (hepatic fat) in patients with HIV.

Improved Cardiovascular Health: It has been shown to reduce the intima-media thickness of the carotid arteries.

Enhanced Cognitive Function: Some studies suggest it can improve cognitive function in healthy adults and seniors.