11 Reviews



Manufacturer: Geneza Pharmaceuticals
Pharmaceutical name: Drostanolone Propionate
Pack: 10 ml/vial (100 mg/ml)



buy masteron 100 injection

What is it?

buy masteron 100 injection by Geneza Pharmaceuticals is an injectable steroid which contains the hormone Drostanolone Propionate.

Geneza Pharmaceuticals offers Drostanolone in two different preperations, 100mg per ML as Drostanolone Propionate and 200mg per ML as Drostanolone Enanthate/Drostanolopne Propionate blend. Masteron, as it is often called, is most commonly used by bodybuilders who are in the “cutting” phase of their training and dieting.

Effects and benefits:

While only mildly anabolic, this steroid extremely androgenic and because of this, brings about a very pronounced amount of hardness and definition to the muscles.

On top of this, GP Mast 100 is also noted as being an effective estrogen blocker. And also binds to SHBG, making it possible for other steroids being used to bind more easily to their respective receptors. Thus making their presence in the body much more effective. These effects are also noted by bodybuilders who choose to use the oral preparation of Masteron, Proviron.


Bodybuilders looking to incorporate GP Mast 100 into a cycle might stack it with other steroids such as Trenbolones, Testosterone propionate, and oral compounds such as Stanozolole or Halotestin. This is to bring about an even more pronounced amount of definition and hardness leading up to a contest. Common androgenic side effects are possible with Masteron. Such as oily skin and increased libido.

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Due to its extremely androgenic properties, this drug is not a favorite among women bodybuilders. Although most serious competitors still choose to use it due to its effectiveness as a pre-contest drug. Males typically use a dosage of this steroid ranging from 300-600mgs per week. While women typically prefer a dosage range of 100-300mgs per week. This drug is often injected once every 2-3 days to help maintain consistent blood levels.

Diet and Exercise

Your diet and exercise plans are just as important whilst on a cycle!.  Check out Muscle and Strength for great tips and plans for dieting on a cycle. They also have great resources on exercising whilst on a cycle

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11 reviews for GP MAST 100 (MASTERON)

  1. Joseph Angelucci

    This is a great product. I have been taking 1 CC every other day with .5 cc of test. In the past I took 1 a day but every other seems to be working fine.Definitely harden me out , especially in shoulders and arms. In general improve sex drive and for me better organism. Great add to any cycle.

  2. Austin Jones

    This mast is great I’m already getting a hardening effect and it’s only been a few weeks. I would recommend this or mast E for someone looking to pin less. Super smooth and will buy again. Thanks

  3. 50 caliber

    Used this for the tail end of a test ,eq cycle i thought it really helped elimenate some water and brouhgt out the veingreat for vascularity

  4. Macho

    Bought already couple times. Great results when mix with other productsWell packed

  5. Slcy

    GP Mast 100 arrived safely and ahead of schedule. This particular brand is potent and has served me well for pre contest prep. Highly recommend without hesitation.

  6. Deric Williams

    Started with test prop, Tren ace and wanted to add something to tail end of cycle. Ordered mast in hope it would get to me to use at end of cycle to really lean out…. got to me in 12 days from order date! Was so stoked!!! Outstanding product and time frame!!!!

  7. Robert

    Got 6 on POW promotion.1 came with a crystal that crashed out of solution. So didn’t use that one.But the other 5 vials were pure gold.Great stuff.1CC EOD.

  8. Jeramey Menchue

    Great product very fast shipping good communication on shipping will order again

  9. John Michael Kane

    Another excellent product from GP. Leaned me out amazingly while giving me boners as the wind blows. A must add to all cycles. Delivery time 11 days.

  10. Justin Gregory

    Awesome Mast Prop. Energy throughout the roof; significant loss in body fat; and horny as hell! From my experience, mast prop should be an essential for all cycles of sporting athletes where in addition to strength and power, endurance is required – mast will make you aggressive as a BEAR a keep you at it all day. My personal favorite AAS – I FREAKIN` LOVE THIS STUFF. Good to go – great GP product!… GYM-CANDIES – AWESOME RANGE, ALWAYS RELIABLE and SUPER FAST DELIVERY.

  11. kevin krett

    Masteron is AWESOME! It incinerated my last layer if bodyfat. It’s gets you ripped!

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