Follistatin 344: Dosage, Benefits, FDA Status & Clinics (2026)

Wipe the stopper with an alcohol swab, then inject your bacteriostatic water slowly down the inside wall of the vial. Let it sit and gently swirl until dissolved — never shake. Store the mixed vial in the refrigerator and draw doses with an insulin syringe. Use the calculator above to turn any dose into syringe units. There is no single correct amount — more water simply spreads the same 1 mg of peptide across a larger volume, which makes small doses easier to measure accurately. 1 to 3 mL per vial is typical. Enter your chosen volume in the calculator above to see the resulting concentration and syringe units. On a U-100 insulin syringe, 100 units equal 1 mL, so 1 unit equals 0.01 mL. The calculator above converts your draw volume into these units automatically so you can measure without doing the math by hand. Keep the reconstituted vial refrigerated at roughly 2 to 8 degrees Celsius, away from light, and avoid freezing it. Reconstituted research peptides are generally used within a few weeks. Always follow the specific guidance supplied with your product. Divide the vial strength of 1 mg by the amount you use per injection. The calculator above reports this as "doses per vial" the moment you enter a dose. No. Follistatin-344 is sold strictly for laboratory and research purposes and is not approved by the FDA or other regulators for human use. Everything on this page is research information, not medical advice — consult a licensed healthcare professional before any use.

Follistatin-344's half-life is approximately 3–4 hours, meaning plasma levels drop to 25% of peak within 8 hours and approach baseline within 16–20 hours. Missing a single dose allows myostatin to resume binding to ActRIIB receptors during that window, but the effect isn't cumulative. Resuming dosing the next day re-establishes suppression without requiring a 'loading dose.' If you miss more than 48 hours, myostatin-mediated protein synthesis inhibition returns fully, and any hypertrophy progress during the dosing period begins reversing.

Reconstitute your 1mg vial with 2mL of bacteriostatic water to create a 0.5mg/mL concentration, then draw 0.3mL (30 units) per injection. This delivers exactly 150mcg (0.5mg/mL × 0.3mL = 0.15mg). The 0.3mL volume fits your syringe capacity while maintaining accurate measurement. A 1mg vial provides six full 150mcg doses with minimal waste.

Verify peptide purity first. Request HPLC data from your supplier if not already provided. If purity exceeds 98%, the issue is likely dietary protein intake insufficient to support the muscle protein synthesis Follistatin-344 enables. Myostatin suppression removes the growth brake, but satellite cell proliferation still requires leucine availability above 2.5g per meal to activate mTOR. Research models underfed relative to their increased anabolic capacity show blunted response regardless of dose.

Administer the missed dose as soon as you remember if fewer than 12 hours have passed since the scheduled time. If more than 12 hours have passed, skip the dose and resume your normal schedule the next day. Do not double-dose. Myostatin suppression is cumulative over days, not dependent on a single injection. Missing one dose does not negate prior progress, but doubling doses increases the risk of injection-site inflammation without additional myostatin binding.