Performance
Follistatin 344
Follistatin 344 is a recombinant glycoprotein that acts as a potent antagonist of myostatin and other TGF-beta superfamily members including activin. By neutralizing myostatin signaling, it removes the primary endogenous brake on skeletal muscle growth, promoting muscle hypertrophy. Research applications include investigation of muscle-wasting conditions, age-related sarcopenia, and performance enhancement.
Quick Facts
Also known asFS-344, FS-315, FS-288
CategoryPerformance
Half-life1.5 hours
Routessubcutaneous
Common vial sizes2mg, 3mg, 5mg, 10mg
Molecular weight37800 Da
Chain length344 amino acids
FDA statusNot approved
Storage-20°C (frozen). Reconstituted: 7 days.
Dosing Protocols
| Goal | Dose | Frequency | Route | Cycle | Notes |
|---|---|---|---|---|---|
| Research Protocol (Anecdotal) | 100 mcg | 1x/day | subcutaneous | 3 weeks | 100mcg once daily. 10-30 day cycle. No clinical dosing established. Anecdotal only. Never exceed 200mcg/day. |
| Higher Dose Protocol (Anecdotal) | 200 mcg | 1x/day | subcutaneous | 3 weeks | 200mcg once daily maximum. 10-30 day cycle. Case report of vision impairment at 1mg single dose. Anecdotal only. |
Protocols shown are for informational purposes only. Consult a healthcare provider before starting any peptide protocol.
Track Your Follistatin 344 Protocol
Log doses, manage vial inventory, set injection reminders, and visualize blood concentration levels.
Start Tracking — FreeCommon Questions
How do I reconstitute Follistatin 344?
Add bacteriostatic water to your Follistatin 344 vial (common sizes: 2mg, 3mg, 5mg, 10mg). The amount of BAC water depends on your desired concentration. Use our reconstitution calculator for exact measurements.
What is the typical dose of Follistatin 344?
A common dose for Follistatin 344 is 100 mcg 1x/day via subcutaneous. 100mcg once daily. 10-30 day cycle. No clinical dosing established. Anecdotal only. Never exceed 200mcg/day.
What is the half-life of Follistatin 344?
The half-life of Follistatin 344 is approximately 1.5 hours. This determines how long the peptide remains active in your body and influences dosing frequency.
How should I store Follistatin 344?
Store Follistatin 344 at -20°C (frozen). Large glycoprotein that is less stable than small peptides. Store lyophilized powder at -20°C. Reconstituted solution is fragile; avoid vigorous shaking and use within 7 days. Once reconstituted, use within 7 days.
Is Follistatin 344 FDA approved?
Follistatin 344 is not FDA approved and is available for research purposes only. It has not been evaluated by the FDA for safety or efficacy in humans.
References
- Follistatin Gene Delivery Enhances Muscle Growth in Nonhuman Primates - Kota et al. (2009) (pubmed)
- Phase 1/2a Follistatin Gene Therapy for Becker Muscular Dystrophy - Mendell et al. (2015) (pubmed)
- Long-term Enhancement of Muscle Mass by Myostatin Inhibitors - Haidet et al. (2008) (pubmed)
- Follistatin Induces Muscle Hypertrophy via Satellite Cell Proliferation - Gilson et al. (2009) (article)
- Inhibition of Myostatin with Emphasis on Follistatin as Therapy - Rodino-Klapac et al. (2009) (pubmed)