Mastoral (Oral Masteron) from Alpha-Pharma is an oral steroid, its active ingredient is methyldrostanolone.

Methyldrostanolone, also known as Methasterone, is a powerful oral anabolic steroid that was never sold as a prescription drug. In structure, this steroid is a close derivative of Drostanolone (Masteron). The only difference in this case is the addition of a c-17 alpha-methyl group, a modification that gives Methyldrostanolone high oral bioavailability. However, the two agents are very comparable. Both methyldrostanolone and drostanolone are not aromatizable, so there is no difference in the estrogenicity of these two steroids and both steroids maintain favorable anabolic to androgenic ratios.

Effective dosage of methyldrostanolone for physical or performance enhancing purposes appears to start in the 10-20 mg per day range for no more than 6 or 8 weeks. At this level it seems to convey a measurable muscle building effect that is usually accompanied by fat loss and increased definition. Don't expect to gain 30 pounds on this agent, but many will go away with more than 10 pounds of solid muscle gain when using this agent alone. In determining an optimal daily dosage, some find Methyldrostanolones to be measurably more effective when venturing up to the 30 mg range. However, it is important to consider potential hepatotoxicity in this application. To avoid further escalation of the liver stem, 20 mg of methyldrostanolone daily is stacked with a non-toxic injectable steroid, such as testosterone for mass appearance phases of exercise or nandrolone or boldenone for more lean tissue and definition, simply increasing the dosage. Methyldrostanolone also works well in cutting cycles where its lack of estrogenicity is greatly favored.

In the athletic arena, an effective oral daily dosage would drop around 2.5 mg per day, in cycles not lasting more than 4-6 weeks, to minimize the possibility of virilization. The main point of competition with women is probably the 10 mg per capsule dosage which is way too high to use. Use would require opening each capsule and dividing the powdered contents into 4 separate doses. As with all steroids, virilization is also possible.

Methyldrostanolone is not aromatized by the body and is not measurably estrogenic. An anti-estrogen is not necessary when using this steroid as gynecomastia shouldn't be a problem even in sensitive individuals. Since estrogen is the usual culprit with water retention, Methyldrostanolone instead produces a lean, quality look on the body without fear of excess subcutaneous fluid retention. This makes it a beneficial steroid to use during cut cycles when water and fat retention are major concerns.