Follistatin is a glycoprotein that binds and neutralizes myostatin (GDF-8), activin A, and several bone morphogenetic proteins. Because myostatin is the dominant brake on skeletal-muscle growth, blocking myostatin produces dramatic muscle…
In the full monograph
- What it is, and how it works
- What the evidence shows — randomized trials, observational data, animal studies, graded and cited
- Dose, form, and timing
- What to expect, and how soon
- Who should be careful, and what to check first
- The verdict
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