Manufacturer: Kalpa Pharmaceuticals
Substance: Drostanolone Propionate
Pack: 10 ml vial (100 mg/ml)
Masteroxyl 100 by Kalpa Pharmaceuticals
Active substance: Drostanolone Propionate
Other names: Masteron 100, Mast P, Masto P, Drostanol P, Mastolab, Masteroxyl, Mastodex Propionate, Mastorox, Mastoplex, Mastabol, Masteform, Andromast, Masteronum, Xeno Mast P 100
Active half-life: 1-1.5 days
Water Retention: NO
Dosage: 300-500 mg/week
Effects: muscle growth, cutting, athletic enhancement and enhanced performance
Masteroxyl 100 (Drostanolone propionate) by Kalpa Pharmaceuticals is an injectable anabolic steroid derived from dihydrotestosterone (DHT). Here, the DHT backbone has been modified with a 2-methyl group to increase its anabolic properties, making this agent significantly more effective at promoting the growth of muscle tissue than its nonmethylated parent. Drostanolone Propionate is described in product literature as a “steroid with powerful anabolic and anti-estrogenic properties,” and indeed does seem to share some of both properties. Admittedly, however, its anabolic properties are more properly described as moderate, especially when placed in the context of other agents. The drug is most often used by dieting bodybuilders and athletes in speed sports, where it is highly favored for its ability to produce solid increases in lean muscle mass and strength, which are usually accompanied by reductions in body fat level and minimal side effects. Drostanolone (also known as dromostanolone) is a modified form of dihydrotestosterone. It differs by the introduction of a methyl group at carbon-2 (alpha), which considerably increases the anabolic strength of the steroid by heightening its resistance to metabolism by the 3-hydroxysteroid dehydrogenase enzyme in skeletal muscle tissue. Drostanolone Propionate is a modified form of drostanolone, where a carboxylic acid ester (propionic acid) has been attached to the 17-beta hydroxyl group. Esterified steroids are less polar than free steroids, and are absorbed more slowly from the area of injection. Once in the bloodstream, the ester is removed to yield free (active) drostanolone. The half-life of drostanolone propionate is approximately two days after injection.
Masteroxyl 100 is usually injected three times per week. The total weekly dosage is typically 200-400 mg, which is taken for 6-12 weeks. This level of use is sufficient to provide measurable gains in lean muscle mass and strength.
Drostanolone Propionate is often combined with other steroids such as Nandroxyl 250 (Nandrolone Decanoate) or Boldaxyl 300 (boldenone undecylenate), which can provide notably enhanced muscle gains without excessive water retention. For mass gains, it is often combined with an injectable testosterone. Masteron, however, is most commonly applied during cutting phases of training. Here it is often combined with other nonaromatizable steroids such as Stanoxyl , Primobolan, Parabolan, or Anavar, which can greatly aid muscle retention and fat loss.
For women recommended a dose is 100 mg, given three times per week. Therapy is given for a minimum of 8 to 12 weeks.
Common side effects of Drostanolone Propionate are: acne, body and facial hair growth, aggression and male baldness (rarely). Liver toxicity and water retention related problems should not be a problem if used in appropriate dosages.
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