Proviroxyl 25 mg

Proviroxyl 25 mg contains mesterolone, which is clinically indicated for the treatment of androgen deficiency states in aging men, hypogonadism, and male infertility associated with oligospermia and Leydig cell insufficiency. In non-medical bodybuilding contexts, mesterolone is commonly referenced for its anti-estrogenic properties and SHBG-binding effects, though such use falls outside approved medical indications.

For medical use, mesterolone is typically administered at 25 mg two to three times daily for androgen deficiency and infertility. Because the compound has a terminal half-life of 12–13 hours, non-medical use often involves once or twice daily administration.

At recommended therapeutic doses, mesterolone does not impair spermatogenesis and has not shown suppressive effects on endogenous testosterone production. In non-medical bodybuilding contexts, post-cycle therapy is sometimes referenced, though the need for it with mesterolone alone is not well established. Agents such as Clomixyl 50 mg or Nolvaxyl 20 mg are commonly discussed for this purpose.

Mesterolone is a synthetic androgen that binds to androgen receptors and to sex hormone binding globulin (SHBG). It is not aromatized to estrogen. Its clinical effects include stimulation of growth and function of effector organs under androgenic influence, and improvement of sperm count and quality in cases of oligospermia.

Following oral ingestion, mesterolone is rapidly absorbed and reaches maximum serum levels after approximately 1.6 hours. For clinical effects such as improvement in sperm count, treatment cycles of approximately 90 days are typically referenced for a complete cycle of spermatogenesis.

There is no single oral androgen that is universally best. Mesterolone has a distinct profile due to its high SHBG binding affinity and non-aromatization. Other orals such as Dianoxyl 10, Anadroxyl, and Stanoxyl 10 have different potency, side effect, and aromatization profiles.

Both mesterolone and methenolone are non-aromatizing oral androgens derived from dihydrotestosterone. Mesterolone is characterized by high SHBG binding affinity and is clinically used for androgen deficiency and infertility. Methenolone is more commonly referenced in non-medical bodybuilding contexts for cutting phases and is also available in injectable form.

Mesterolone and oxandrolone are both oral non-aromatizing androgens. Mesterolone is specifically indicated for male infertility and androgen deficiency, with clinical evidence supporting its use in oligospermia. Oxandrolone is a 17-alpha-alkylated compound with a different clinical profile and is more commonly referenced in non-medical bodybuilding contexts for lean mass retention.

A single 25 mg tablet represents the standard clinical dose unit for mesterolone, typically administered two to three times daily for medical indications. In non-medical bodybuilding contexts, 25–75 mg per day is commonly referenced, with 25 mg per day representing a low dose.

Proviroxyl 25 mg is labeled at 25 mg of mesterolone per tablet. It is supplied in packs of 30 tablets, giving 750 mg of total labeled mesterolone content per pack.

Yes, clinical evidence supports the use of mesterolone for improving sperm count and quality in cases of oligospermia. A study of 250 subfertile men treated with mesterolone at 100–150 mg per day for 12 months found significant improvement in sperm density, total sperm count, and motility in moderately oligospermic patients. However, results were less favorable in severe oligospermia.

Laboratory testing information for Proviroxyl 25 mg is not currently available in this product listing. Kalpa Pharmaceuticals products are manufactured under pharmaceutical-grade conditions, but independent lab reports are not published for this specific product at this time.