28 September 2026
Tesamorelin and Cognition: The 152-Person Signal, Then 22
Tesamorelin research on cognition: a 152-person 2012 trial found an executive-function signal; a 2026 pilot of 22 found none. Plus tesamorelin Australia status.
Peptides · Growth Hormone Axis
Egrifta · TH9507
FDA-approved (US) · not registered in Australia
A stabilised analogue of growth-hormone-releasing hormone (GHRH) and one of the few compounds on this list that is a genuinely approved medicine — the FDA approved it to reduce excess abdominal fat in people with HIV-associated lipodystrophy.
Tesamorelin stimulates the pituitary to release the body's own growth hormone in a more physiological pattern than injected HGH, raising IGF-1 and preferentially reducing visceral (deep abdominal) fat.
Phase 3 trials in HIV-associated lipodystrophy showed roughly 15–18% reductions in visceral fat over 6–12 months. Research interest continues in other conditions, including NAFLD and cognition, but its approval remains narrow.
Australia
Not registered on the ARTG — there is no approved tesamorelin product in Australia. Any access would require special-access pathways through a prescriber.
Worldwide
FDA-approved since 2010 for HIV-associated lipodystrophy (marketed as Egrifta). Not broadly approved for fat loss in the general population. WADA prohibits GHRH analogues in sport.
28 September 2026
Tesamorelin research on cognition: a 152-person 2012 trial found an executive-function signal; a 2026 pilot of 22 found none. Plus tesamorelin Australia status.
25 September 2026
What is tesamorelin, and what did its new EGRIFTA WR vial actually prove? A 36-person PK bridge, not new efficacy, plus tesamorelin Australia status.
22 September 2026
Tesamorelin research on liver fat rests on one 61-person biopsy trial in HIV. What it showed, what it didn't, and tesamorelin's status in Australia.
20 September 2026
Tesamorelin research on cognition: a 2012 placebo-controlled trial found gains; a 2025 phase 2 did not. What that means, plus tesamorelin Australia status.
17 September 2026
A 2026 meta-analysis of five tesamorelin trials found visceral and liver fat fell while BMI and subcutaneous fat didn't. What that means in Australia.
14 September 2026
Tesamorelin's approved dose fell from 2 mg to 1.28 mg with no change to the molecule. The sub-4% bioavailability story, the bioequivalence data, and the Australian status.
11 September 2026
Tesamorelin research on cognition: a 2012 trial showed executive-function gains, a 2025 HIV trial missed. What that means, plus tesamorelin Australia rules.
9 September 2026
A 2026 meta-analysis of five RCTs found tesamorelin cut visceral and liver fat but not BMI. What the evidence shows, plus tesamorelin's Australian status.
This is general information, not medical advice. retatrutide.net.au is an independent publication. Unless stated otherwise above, this compound is not an approved medicine in Australia, and this page does not endorse or facilitate its use. Speak to a registered health practitioner about any treatment decision.
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