Buy GP Mast 100 and GP Mast 200 by Geneza Pharmaceuticals at Best Anabolic Steroids. Two vials of drostanolone share this page: a 100 mg per ml propionate ester for alternate-day pinning and a 200 mg per ml enanthate ester for a twice-weekly routine. Both are 10 ml multi-dose containers holding the same DHT-derived compound.
Everything on this page is educational and laboratory reference material, assembled from the label values and from published pharmacology rather than from a clinical protocol for any condition.
Product Overview
Drostanolone is a DHT-derived injectable that does not aromatise and has no progestogenic activity worth planning around. Its reputation comes from a hard, dry appearance rather than from scale weight: hardness, vascularity and muscle separation are what users chase with it, and it is a poor choice for anyone whose main goal is mass.
Masteron 100, the propionate pack, is the fast one. The vendor material describes a kick-in of one to two weeks and calls for injections every other day or daily in the closing weeks of a prep. It leaves the body quickly once dosing stops, which is why it is usually chosen for the last stretch of a diet.
Masteron 200, the enanthate pack, trades that speed for convenience. Two injections a week are enough, the effect builds more gradually as the ester accumulates, and clearance takes longer. Users who dislike awkward injection schedules or who run longer blocks of ten to sixteen weeks tend to pick this one.
Neither pack is described in the sources as an anabolic for beginners; the androgenic profile puts acne, hair shedding and prostate-related symptoms in the discussion from the start.
Dosage Protocol
| Beginner | Propionate 300-400 mg per week, which the vendor material splits as 100-200 mg on alternate days, across 6-8 weeks. Enanthate 300-400 mg per week for 8-10 weeks |
| Intermediate | Propionate 400-500 mg per week, pinned on alternate days or daily, for 8-10 weeks. Enanthate 400-600 mg per week in two shots for 10-12 weeks |
| Advanced | Propionate 500-600 mg per week for 8-10 weeks. Enanthate 600 mg per week for 12-16 weeks, still split across two injections |
| Female | Not recommended on either ester; the androgenic profile makes voice change and hair growth the headline risks |
| Administration | Intramuscular for both; alternate-day or daily pinning on the 100 pack, twice-weekly on the 200 pack, with sites rotated |
Blood work matters on both packs: estradiol and the androgen-related markers for the stack as a whole, lipids, and a full blood panel. Where drostanolone sits alone without an aromatising base, estradiol can end up on the low side and that is worth seeing on a result rather than feeling in the joints.
Suggested Protocols
Masteron is a supporting compound. It is added to a base rather than used as one.
What to Expect
The propionate pack shows its hand within one to two weeks: the physique dries out, veins come up, strength holds steady despite a calorie deficit. The enanthate pack follows a gentler curve, arriving somewhere around weeks three to five and sustaining a harder look for longer.
Neither ester adds water, so any softness in the mirror usually belongs to the aromatising base in the stack rather than to drostanolone. What does come with the compound, and follows the dose, is androgenic load: oily skin and acne in predisposed users, hair shedding where the hairline is already sensitive, and joints that feel drier than before, a complaint the sources link directly to the DHT profile. Natural production is suppressed on both packs, so the recovery plan is part of the block, not an afterthought.
Side Effects and Management
Post-Cycle Therapy
The ester picks the start date again: days after the propionate pack, longer after the enanthate pack.
Keeping Both Vials
Room temperature, out of the light, cap tight, vial upright. The 200 mg per ml pack is the more viscous of the two and draws better after a minute in the palm; the 100 mg per ml pack thins out quickly and needs no warming. Never freeze either, and discard a vial that shows particles, cloudiness or a separated layer.
Buying Geneza Masteron Online
Both drostanolone packs are part of the Geneza Pharmaceuticals selection on Best Anabolic Steroids, and the ester, strength and vial size are shown on the card, so the pinning schedule can be decided before an order is placed. Questions about dose, hairline concerns or recovery timing are answered before checkout, and the compounds that commonly flank a hard block, from Trenbolone Acetate to clenbuterol, come from the same stock.
