Discount -10% On all Mactropin products

Proviron (Mesterolone) 20x25mg – Bayer



Trade names: Proviron
Chemical names: Mesterolone
Routes: Oral
Half-life: 12 hours.

Buy Proviron (Mesterolone) 20x25mg – Bayer

Proviron was developed by Schering in 1934, making it one of the first drugs used in hormone replacement therapy. Mesterolone is very similar to dihydrotestosterone in that it is a strong androgen but a very weak anabolic agent.

Proviron by itself does not significantly increase muscle mass. What it does play a significant role in is that it binds 60-65% to sex hormone-binding globulin (SHBG). This may cause other steroids, more loosely bound to SHBG, to move into the free (active) state. SHBG binds very strongly to testosterone, and about 95-99% of your testosterone is bound to it. Only the free fraction of circulating testosterone really makes you grow.

Simply put, Proviron’s ability to bind so strongly to SHBG will release the other steroids in your stack so that they can perform more exercise.

Proviron also binds to aromatase enzymes, preventing them from converting other steroid compounds into estrogen. This gives Proviron the added advantage of acting as a moderately effective anti-estrogen. Because of this, Proviron has no estrogen side effects, which makes it a very welcome addition to any pre-competition cycle.

Another advantage is that Proviron is not alkylated to C-17 alpha. Instead, it has been modified with the addition of a methyl group at one carbon, which helps protect the hormone from being metabolised in the liver when taken orally. This property is inherent to oral Primobolan. Because it is not c-17 alpha-alkylated, there is no toxicity to the liver, and so Proviron is considered one of the safest steroids along with Primobolan.

Androgenic side effects such as oily skin, acne, facial/body hair growth and male-type boldness are still very common. Women should avoid taking this drug because of its virilising side effects. Testosterone suppression is minimal compared to some others. Thus, low doses of 20 to 25 mg can be used during SCT without any negative effect on your SCT.

Normal doses can range from 20 to 100 mg per day. Some people use it in the dosage range of 150 to 200 mg per day. It is a very safe drug, and even at these dosages it has very little harmful effect. At dosages above 100mg a day you start to enter the zone of diminished returns. I have personally found that the most effective dose is 50-100mg per day.

Proviron is readily available and reasonably priced. Proviron is definitely a drug that can be used in any stack, and even beginners can add it to their cycles for results without increasing the dosage of other steroids.


Only logged in customers who have purchased this product may leave a review.