Educational Wellness Information Only
This platform provides peer-reviewed research summaries and educational content about peptides for wellness and optimization purposes. Nothing on this site is intended as medical advice, diagnosis, or treatment. We do not claim any peptide can diagnose, treat, cure, or prevent any disease. Always consult a licensed healthcare provider before beginning any wellness protocol.
Statements on this site have not been evaluated by the FDA. Compounded preparations are subject to applicable state and federal regulations. Availability and eligibility vary.
Follistatin 344 vs Tesamorelin
An educational, source-based comparison of Follistatin 344 and Tesamorelin — how each peptide works, what it's researched for, and what to know before going deeper.
Myostatin-binding protein fragment researched for muscle growth.
A naturally occurring glycoprotein that binds and neutralizes myostatin and activin, releasing the natural brake on skeletal muscle growth in preclinical models.
- Muscular dystrophy models
- Skeletal muscle hypertrophy
- Age-related sarcopenia (preclinical)
- • Off-target effects on activin signaling (reproductive, cardiac) are a concern.
- • Not FDA-approved; banned by WADA.
A stabilized analog of growth hormone-releasing hormone (GHRH) that stimulates pulsatile endogenous GH and IGF-1 release. FDA-approved (Egrifta) for the reduction of excess abdominal visceral fat in HIV-infected patients with lipodystrophy.
- Visceral adipose tissue reduction (approved)
- Cognitive function in older adults (research)
- NAFLD / hepatic fat (research)
- • FDA-approved only for HIV-associated lipodystrophy.
- • May affect glucose tolerance; monitor in at-risk patients.
- • Requires physician oversight.
Trial-evidence rating
Educational grade reflecting how many peer-reviewed studies and FDA actions we cite for each peptide. Not a clinical recommendation.
Early-stage research; conclusions are tentative.
FDA-approved with published clinical trial data.
Study-by-study comparison
| Peptide | Study | Source | Year | Summary |
|---|---|---|---|---|
| Follistatin 344 | Follistatin gene delivery enhances muscle growth and strength | Science Translational Medicine | 2009 | Demonstrated durable hypertrophy in primate models. |
| Tesamorelin | Tesamorelin for HIV-associated lipodystrophy | New England Journal of Medicine | 2007 | Phase 3 trials showing significant visceral fat reduction. |
| Tesamorelin | Tesamorelin and NAFLD in HIV | The Lancet HIV | 2019 | Reduced hepatic fat fraction in HIV-infected adults with NAFLD. |
Side-effect & safety grid
- Off-target effects on activin signaling (reproductive, cardiac) are a concern.
- Not FDA-approved; banned by WADA.
- FDA-approved only for HIV-associated lipodystrophy.
- May affect glucose tolerance; monitor in at-risk patients.
- Requires physician oversight.
Educational summary of considerations reported in research literature — not a complete list of adverse events. Discuss with a licensed clinician before any use.
Follistatin 344 vs Tesamorelin — Key differences
- Class: Follistatin 344 is classified as Muscle · Myostatin Inhibition, while Tesamorelin is Growth Hormone Axis.
- Primary research focus: Follistatin 344 — muscular dystrophy models; Tesamorelin — visceral adipose tissue reduction (approved).
- Tag: Muscle vs Body composition.