About mesterolone
Oral androgenic steroid
Used for
- Treats androgen deficiency in men when confirmed by symptoms and laboratory tests.
- May be used for selected male infertility associated with androgen deficiency.
Usual adult dose
Usually 25–50 mg by mouth two to three times daily initially; maintenance is commonly 25 mg two to three times daily. Dosing varies by indication.
Common side effects
- Acne or increased skin oiliness
- Headache
- Increased sexual drive
- Frequent or prolonged erections
Important warnings
- Not for muscle building or athletic performance.
- Avoid in prostate or male breast cancer.
- May cause prostate enlargement; medical monitoring may be needed.
- Can reduce fertility through effects on sperm production.
Pregnancy
Not for use in pregnancy; it is intended for male patients.
Breastfeeding
Not for use during breastfeeding; it is intended for male patients.
Interactions
- May increase the effects of oral anticoagulants such as warfarin.
- May affect blood glucose control in people using diabetes medicines.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.