How long does Follistatin 344 take to work?
In the first week of Follistatin 344, anecdotal pumps and fullness reports. Around week 4, subjective effects peak around here for responders. Cycle endpoint, stop. By week 8, off-cycle. No long-cycle data exists. Response varies between people, this is the commonly reported pattern, not a guarantee.
Week by week
- Week 1: Anecdotal pumps and fullness reports.
- Week 4: Subjective effects peak around here for responders. Cycle endpoint, stop.
- Week 8: Off-cycle. No long-cycle data exists.
References
- Long-term enhancement of skeletal muscle mass and strength by single gene administration of myostatin inhibitors — Haidet AM, Rizo L, Handy C, et al. (incl. Mendell JR, Kaspar BK), PNAS, 2008
- Follistatin gene delivery enhances muscle growth and strength in nonhuman primates — Kota J, Handy C, Haidet AM, et al. (incl. Kaspar BK), Science Translational Medicine, 2009
- A phase 1/2a follistatin gene therapy trial for Becker muscular dystrophy — Mendell JR, et al., Molecular Therapy, 2015 (NCT01519349)
Pepdex is an editorial reference, not medical advice. Peptides vary in legal and approval status by country, many are research compounds without full human safety data. Talk to a qualified clinician before starting anything.
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Last updated 2026-06-06.