Xeno Laboratories Masteron Propionate and Depot 200 Vials

Masteron is the trade name of drostanolone, a dihydrotestosterone-derived injectable androgen. Because the molecule is already 5-alpha reduced, it is not a substrate for aromatase, so it produces no estradiol-linked water retention and no breast tenderness. That is the practical difference from an aromatising base compound, which supplies the estrogen the molecule cannot make itself.

The ester decides the rhythm, not the effect. Propionate 100 at 100 mg/ml clears in roughly two days, so references inject it every other day and it suits short blocks. Depot 200 at 200 mg/ml is reported at seven to ten days, so twice-weekly reference injections are enough and it suits longer stretches where a flatter curve is wanted. Concentrations differ, so millilitres are not interchangeable between the two vials.

No estradiol is produced from drostanolone, so fluid retention and gynecomastia are not part of its own profile. That does not make a stack dry as a whole: water balance follows the whole combination, and if an aromatising base ester or an oral is in the same protocol, any estrogen-linked effect comes from those compounds. Aromatase inhibitor need is judged on the base compound and on bloodwork, not on this vial.

The profile is androgenic: acne and hair shedding in people who are predisposed, plus a shift in blood lipids with HDL down and LDL up. Users also report dry, aching joints, which follows from running at a low estrogen level. Injected androgens suppress natural testosterone production, and virilisation risk makes the compound unsuitable for women in published community writing. No human safety study of this vial exists.

Yes. Any injected androgen suppresses the hypothalamic-pituitary-gonadal axis, and drostanolone is no exception, so a recovery plan belongs in the discussion. The ester sets the timing: a long ester needs a longer wait before a SERM such as Nolvadex or Clomid is started, while the propionate clears far sooner. Bloodwork, not a fixed calendar, decides when that point has arrived.

Reviews of urine clearance describe drostanolone metabolites being traceable for several weeks after the last injection, with a longer window for the enanthate ester than for the propionate. No single agreed number in weeks was found in the sources checked for this card, so the honest statement is that the window is measured in weeks and that the exact figure is not confirmed.

Both esters are listed on this page as research material, with international checkout and a U.S. domestic option. Orders are normally handled within one to two business days, the international route runs on a longer transit window than the domestic one, and each batch ships with an HPLC report. Stock, variant and the current price are shown in the product block above; at the time of checking, the listing carried an out of stock marker while packs are restocked, so confirm the stock line before ordering.