Follistatin vs Enclomiphene
Side-by-side comparison of key properties, dosing, and research.
Anabolic & IGF
FollistatinGLP-1 / Weight Loss Agonists
Enclomiphene- Summary
- Follistatin is an endogenous glycoprotein that acts as a potent inhibitor of myostatin and activin, two proteins that limit muscle growth. By binding and neutralizing myostatin, follistatin removes the primary brake on skeletal muscle hypertrophy, enabling significant muscle growth beyond normal physiological limits. It is distinct from its isoforms Follistatin 315 and Follistatin 344 in tissue distribution and binding affinity.
- Enclomiphene is the trans-isomer of clomiphene citrate, a selective estrogen receptor modulator (SERM) that stimulates endogenous testosterone production by blocking estrogen negative feedback on the hypothalamus and pituitary. Unlike TRT, it restores testosterone while preserving or increasing sperm production and testicular volume.
- Half-Life
- ~3–5 hours (endogenous form)
- 5-7 days (long half-life; accumulates)
- Admin Route
- IM, SubQ
- Oral
- Research
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- Typical Dose
- 50–100 mcg per injection site
- 12.5-25 mg per day
- Frequency
- Every other day or 2–3x per week
- Once daily or every other day
- Key Benefits
- Potent myostatin inhibition enabling supraphysiological muscle growth
- Increases skeletal muscle mass and fiber size
- May accelerate recovery from muscle injury
- Potential benefits in muscular dystrophy and sarcopenia
- Synergistic with IGF-1 and growth hormone in anabolic protocols
- Animal studies show dramatic increases in muscle mass
- Reduces muscle fibrosis in dystrophic models
- Restores testosterone to normal range without exogenous androgen administration
- Preserves or increases sperm production and fertility
- Maintains testicular volume (unlike TRT which causes testicular atrophy)
- LH and FSH levels rise, indicating intact HPG axis function
- Option for hypogonadal men desiring fertility
- Oral administration (no injection required)
- Side Effects
- Potential for excessive muscle growth if doses are not controlled
- FSH suppression with implications for fertility in women
- Theoretical risk of cardiac hypertrophy with prolonged high-dose use
- Limited human safety data available
- +1 more
- Visual disturbances (rare but class-related SERM effect)
- Mood changes or irritability
- Hot flashes
- Elevated estradiol in some users
- +2 more
- Stacks With
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