Follistatin-344
Also known as: FS-344, FST-344
Overview
Recombinant 344-amino acid protein that functions as a potent myostatin and activin inhibitor. Binds to myostatin preventing its catabolic action on muscle tissue, promoting hypertrophy.
Protein of 344 amino acids. Full sequence too long for display.
Molecular Weight
~38 kDa
Half-life
~6-12 hours
Administration Route
Subcutaneous
Category
Specialized Research
Mechanism of Action
- Myostatin inhibition via direct binding
- Activin A and B blockade
- Promotion of muscle growth via disinhibition of anabolic pathways
- Reduction of tissue fibrosis
- Role in FSH (follicle-stimulating hormone) regulation
Dosage Protocol
Data compiled from the literature. This does not constitute medical advice.
| Parameter | Value |
|---|---|
| Dose | 100-200 mcg per injection |
| Frequency | Once daily |
| Timing | Morning or post-workout |
| Duration | 10-30 days |
Reported Side Effects
Adverse effects described in the literature. Severity and frequency vary between individuals.
- Injection site redness
- Fatigue
- Headache
- Joint discomfort
Presentations & Preparation
Vials of Follistatin-344 found in the research market:
Reconstitution
- Diluent: Bacteriostatic water
- Volume: 1 ml per 1 mg vial
- Inject diluent slowly
- Gently swirl without shaking
- Immediate use after reconstitution recommended
Storage
- Lyophilized: Frozen -20°C (long-term)
- Reconstituted: Refrigerated 2-8°C (up to 7 days)
- Delicate protein — avoid freeze/thaw cycles
- Protect from light
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