Drostanolone Propionate - British Dragon

Buy Mastabol 100 and Mastabol 200 by British Dragon at XSteroids. The two packs on this page are drostanolone on two different esters: propionate at 100 mg/mL and enanthate at 200 mg/mL. The hormone is the same, the release speed is not, and that is the entire choice.

Drostanolone was a prescription medicine and is no longer marketed; sold here it is a research product and the notes below are educational.

What Drostanolone Does

Drostanolone is a DHT derivative, so it does not aromatise at all - there is no route from this compound to estrogen, no water and no gynecomastia from the Mastabol itself. It is not a substrate for 5-alpha reductase and a poor substrate for 3-alpha-HSD, which is where its unusually high anabolic-to-androgenic ratio comes from despite being a DHT.

That profile makes it a hardening compound rather than a mass builder: strength, density, vascularity and a drier look, with a liver profile that is not the concern it is with oral tablets.

The Condition That Decides Whether It Works

This is the part most product pages leave out. Mastabol shows its effect only on a lean physique - the brand puts the working threshold at roughly 10 to 12 percent body fat. Above that, the change in appearance is close to invisible and the compound is doing little except suppressing natural testosterone. It is a finisher for the last six to eight weeks of a preparation, not a starting point.

Mastabol 100 - Drostanolone Propionate

What it does and what a vial gives you

The propionate ester has an elimination half-life of about two days - one third-party reference says around two and a half - so injections go every other day at minimum, and daily in the final weeks. The brand's range is 300 to 600 mg a week, delivered as 100 to 200 mg every other day, over cycles of 6 to 10 weeks. Effects are visible in the first one to two weeks.

A vial is 10 mL at 100 mg/mL, so 1000 mg. At 300 mg a week that is about three and a third weeks; at 400 mg two and a half; at 600 mg under two. 100 mg every other day works out near 350 mg a week, so roughly three weeks per vial. Half a millilitre is 50 mg.

Mastabol 200 - Drostanolone Enanthate

What it does and what a vial gives you

The 200 pack is the enanthate ester, with a half-life in the 7 to 10 day range, so two injections a week are enough. The brand's range is 400 to 600 mg a week over 10 to 16 weeks, with blood levels peaking around week 3 to 4. This is the pack for a long prep where fewer injections matter, and the one whose side effects take longer to clear once you stop.

A vial is 10 mL at 200 mg/mL, so 2000 mg. At 400 mg a week that is five weeks; at 600 mg about three and a third. One millilitre is 200 mg and 1.5 mL is 300 mg. Hair-loss risk is the same for both esters - the difference is that the fast one brings it on sooner, because it becomes active sooner.

Choosing Between the Two Packs

Propionate 100 gives quick visibility, a shorter cycle and a fast exit if something goes wrong, at the cost of injecting every other day or daily. Enanthate 200 gives a steadier level and two shots a week, at the cost of a longer commitment and a slower clearance at the end. For a first run at drostanolone, or for the last six weeks before a date, propionate is the simpler instrument. For a long prep where you already inject frequently, the enanthate pack halves the pin count.

Drostanolone as an Estrogen Control

Because it does not aromatise, Mastabol is sometimes used alongside aromatising compounds to blunt estrogen and reduce the AI dose needed. The brand makes that argument explicitly, and there is history behind it: the drug was approved as an antiestrogenic treatment for breast cancer in women. When it rides with a testosterone base such as Testabol, an AI such as Letrobol or Anastrozole is still the tool of record - Mastabol reduces the requirement, it does not replace it.

Stacking Mastabol

The cutting stack in this line is Trenabol plus Mastabol, which is exactly what the brand recommends for hardness. A lean-growth route uses Mastabol with Testabol and Boldabol, and Mesterolone is a milder DHT alternative when the goal is drive rather than hardness.

PCT After Mastabol

Drostanolone suppresses natural testosterone, so recovery applies. After the enanthate pack the brand suggests starting PCT about two to three weeks after the last injection; the propionate ester clears faster, so the wait is shorter. A SERM such as Clomiphene runs four to six weeks with blood work to confirm the axis has restarted.

Side Effects

There are no estrogenic effects to watch: no water, no gynecomastia from this compound. The androgenic side carries the load - accelerated scalp hair loss in anyone genetically predisposed, body hair growth, acne and oily skin. Natural testosterone production is suppressed and HDL falls. Women face virilization that can be permanent, which is why the brand does not recommend it for them.

Storage

Keep the vials at room temperature, away from direct light, and out of the reach of children. Discard any vial with visible particles or discolouration in the solution.

Why Buy Mastabol from XSteroids?

At XSteroids you buy the British Dragon Mastabol vials straight from the brand catalog, with secure checkout, US domestic shipping in 3 to 6 days and international delivery in 12 to 26 days. Browse the full range on the British Dragon brand page to complete a cycle from base to PCT.