Masterbol 150 mg Injection contains Drostanolone Propionate 100 mg/ml, an androgenic anabolic steroid (AAS) primarily used in the treatment of breast cancer in elderly post-menopausal women. It functions as part of a specific immunotherapy regimen, helping to slow the growth of hormone-dependent tumors.

Drostanolone Propionate is a derivative of dihydrotestosterone (DHT) and is known for its ability to protect hormones from metabolic breakdown by the enzyme 3-hydroxysteroid dehydrogenase, which is active in skeletal muscle tissue. This unique property enhances its anabolic effects, making it beneficial for muscle preservation, collagen synthesis, and bone mineral density improvement.

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Therapeutic Uses

• Treatment of hormone-dependent breast cancer in post-menopausal women

• Used as androgen replacement therapy under strict medical guidance

• Helps increase bone mineral content and collagen synthesis

• Promotes muscle preservation in catabolic conditions

• Enhances overall hormonal balance in specific medical conditions

Mechanism of Action

Drostanolone Propionate works by binding to androgen receptors, influencing the transcription of target genes that regulate protein synthesis and cell growth.
By preventing metabolic breakdown of androgens, it maintains high anabolic activity, leading to increased muscle tissue density and bone strength.

In breast cancer, it helps counteract estrogen’s effects on tumor cells, slowing their progression and reducing recurrence risks.

Dosage & Administration

• Recommended Dose: As prescribed by the physician

• Route: Intramuscular (I.M.) injection only

• Frequency: Depends on medical condition and response to therapy

• Do not self-administer without medical supervision

Possible Side Effects

• Mild pain or redness at injection site

• Voice changes or hoarseness (in females)

• Hair growth or acne

• Altered liver function (in rare cases)

• Menstrual irregularities

Consult your doctor immediately if you experience any adverse effects.

Precautions & Warnings

• For use in adult women only (post-menopausal)

• Not recommended during pregnancy or breastfeeding

• Avoid use in patients with liver disease, kidney disorder, or heart failure

• Regular monitoring of hormone levels and liver enzymes is advised

• Store below 30°C, away from sunlight and moisture