Product Overview
Two strengths of drostanolone are listed on this card: Mastabol 100 and Mastabol 200. Both are the same DHT-derived injectable androgen, and the difference is the ester, and that ester sets the injection interval and decides how long the effect lingers after the final shot.
Both products are chosen for the same kind of work. Drostanolone hardens the look, supports strength and is used in cutting and pre-contest phases; it is almost never the base of a cycle and is usually run beside a testosterone ester such as Testabol Depot. It suits adult men in the later stages of a preparation rather than a beginner looking for size.
Two warnings belong at the top. The compound does not convert to estradiol, so water retention is absent and an aromatase inhibitor is not needed for it, but the absence of estrogen also means joint dryness and a flat look if it is run alone. And because it is a strong DHT derivative, androgenic effects on the scalp and skin are typical rather than rare.
The Two Esters
Mastabol 100 - propionate
The 100 mg per ml vial carries the short ester, clearing in roughly two days, so doses land every other day. Amounts open at 300-400 mg a week, run up to about 600 mg a week and cover six to ten weeks, with a first effect inside one to two weeks.
Mastabol 200 - enanthate
The 200 mg per ml vial is the long one, clearing over some seven to ten days. A stable level is held on two shots a week, and the weekly total opens at 300-400 mg before reaching 600 mg; blocks are written for ten to sixteen weeks. It is the version for anyone who does not want an every-other-day routine.
| Mastabol 100 | About 2 days; every other day; onset in 1-2 weeks; cycles of 6-10 weeks |
| Mastabol 200 | 7-10 days; twice weekly; cycles of 10-16 weeks |
| Shared by both | Same DHT-derived compound, no aromatisation, the same androgenic profile |
What Drostanolone Does
Drostanolone is a DHT-derived androgen that cannot be aromatised, so it produces no estradiol of its own. The result is a dry, hard appearance, a small increase in strength and an absence of water retention, which is exactly why it appears in the final weeks of a cutting plan.
Nothing about that changes with the ester. The ester only alters the interval between injections and the speed at which the compound leaves the body, and the detection window follows the same logic: measured in weeks for both, with the enanthate version running longer.
Dosage Protocol
Amounts are reference values by ester, and the weekly total is the figure to plan around.
| Mastabol 100 - beginner | 300-400 mg a week, given as 100-200 mg every other day, for 6-8 weeks |
| Mastabol 100 - advanced | 500-600 mg a week for 8-10 weeks; some users inject daily in the final weeks of a prep |
| Mastabol 200 - beginner | 300-400 mg a week for 8-10 weeks, in two injections |
| Mastabol 200 - advanced | 600 mg a week for 12-16 weeks; the vendor range for the middle level is 400-600 mg a week |
| Female | Not recommended; virilization risk is significant for a strong DHT derivative |
| Administration | Deep intramuscular; every other day for the propionate, twice weekly for the enanthate |
Suggested Protocols
Drostanolone is a supporting compound. The patterns below place it beside a base rather than in place of one.
What to Expect
- Harder appearance. The look dries out because no estradiol is produced and no water is held.
- Strength support. A moderate increase in top-end lifts, smaller than a 19-nor would give.
- Joint dryness. Reported by many users, especially when the compound is run without an aromatising base.
- Onset by ester. One to two weeks on the propionate, closer to three weeks on the enanthate.
- Androgenic effects. Acne and scalp hair shedding are the usual complaints at working amounts.
- Limitation. Detection is measured in weeks for both esters, and longer for the enanthate.
Side Effects and Management
The profile is androgenic rather than estrogenic, so the watch list looks different from a testosterone cycle.
Post-Cycle Care
Drostanolone suppresses natural production and is normally used with a base that suppresses it further, so a recovery step follows the cycle. The two support products ordered alongside it are Tamoxifen and Clomiphene.
Which Ester to Choose
Choose on injection tolerance and on the length of the block. A six to ten week hardening phase is easier to steer on the propionate, where a missed day is corrected quickly and the compound is gone soon after the last shot. A ten to sixteen week lean phase suits the enanthate, where two injections a week are enough and the level stays flat.
Neither ester changes what the compound does, so the support list is the same: a testosterone base, a stable source, and lipids in the bloodwork plan. Buyers who want the milder comparison product instead can read the Oxanabol or Stanabol 50 injection pages, but the dry look here comes from the same place in every case.
