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Proviron (active substance is called Mesterlone) acts as estrogen blocker and it does not let testosterone to get aromatized. This way it decreases negative impact of some side effects. In the result it gives double effect during steroid cycle.

Proviron is very mild and it does not have any side effects and just brings positive results:

1) You get double effect from your cycle
Muscles become more hard and have less water. This effect remains long after end of your cycle.

2) You get less aromatization. No breast or “bitch tits”.

3) You get better erection.
Proviron is not a typical steroid but a substance to anabolic steroids. It’s also being used during steroid cycle to reduce negative impact of some steroids to libido (Deca cycle, for example). So it’ great idea to buy Proviron for men after 40.

4) Muscles become neat and underlined.

One can buy and use Proviron without any harm to the body within few weeks. But if used longer one can experience the following side effects:

  •  Muscles get to much water and thus after you end steroid cycle some of it’s results may get rolled back.
  • Very hard erection. If you experience this you should lower the dosage or pause using it.
  •  Ladies may use it but this may bring some unwanted “male” effects.


Usually it’s ok to consume 50mg per day but depending on your cycle it can be increased till 100mg daily. If you experience any unwanted side effects (too long erection, for example) you just lower the dosage till 25mg daily

Proviron is not a PCT replacement. It does not help your body to start producing testosterone after steroid cycle. It just helps body to consume steroids better.