Provibull 20 Bull Pharma USA

MESTEROLONE 20 MG – 50 TABLETS  Oral Proviron (Supportive Compound)

What is Mesterolone (Proviron)?

Mesterolone, commercially known as Proviron, is an oral dihydrotestosterone (DHT) derivative compound.² Unlike most anabolic compounds, its primary function is not muscle building (its anabolic effect is too weak for that purpose). Instead, Proviron is highly valued as an ancillary (supportive) compound in steroid cycles due to its unique actions: strong androgenic activity and anti-estrogenic properties.

Mechanism and Key Benefits

Proviron is useful with other compounds because of its dual action:

1. Increases Free Testosterone (SHBG Binding): Proviron has an extremely high affinity for Sex Hormone Binding Globulin (SHBG).³ By binding to SHBG, it displaces testosterone and other steroids, releasing a higher percentage into a free, active state.⁴ This helps to increase the power and activity of other compounds in the body.

2. Anti-Estrogen Support: Proviron is believed to act as a mild anti-aromatase, preventing or slowing the conversion of testosterone into estrogen. This action helps:

   • Reduce estrogenic side effects (water retention, decreased sexual desire, gynecomastia).⁵

   • The result is somewhat comparable to Arimidex (though less profound).

Dosage and Administration

• Typical Dosage for Men: One to four tablets (25 mg to 100 mg) per day. This amount is considered sufficient to prevent gynecomastia.

• Cycle Timing: The compound is often used along the entire cycle with other steroids.

• Combination: It is often combined with Nolvadex (Tamoxifen) or Clomid when largely estrogenic steroids (Dianabol, Testosterone, etc.) are being used.⁶ A dosage of 50 mg of Proviron and 20 mg Nolvadex daily is highly effective in these cases.

 Side Effects and Safety Warnings (CRITICAL)

Mesterolone is a potent androgen, and caution is required, particularly for women.

• Androgenic Side Effects (Common): Androgenic adverse effects may be common, but only with extremely high doses. These include oily skin, acne on the body, facial hair growth, and aggravation of male pattern hair loss.

• Risks for Women (CRITICAL): Proviron is a strong androgen and has the potential to produce virilization symptoms quite readily, even at lower doses.⁷ This includes a deepened voice, menstrual irregularities, changes in skin texture, and clitoral enlargement. Women should be extremely cautious and are generally advised to avoid Proviron.

• Hormonal Suppression: Although its anabolic nature is weak, it will still impact the HPTA and requires a PCT protocol.

 Frequently Asked Questions (FAQ)

Q1: Is Proviron used for muscle gain?

No. Although it is an androgenic compound, its anabolic effect is considered too weak for building significant muscle. Its primary role is to support and enhance the effects of other, more potent anabolic compounds.

Q2: How does Proviron increase the effectiveness of other steroids?

Proviron increases the effectiveness of other steroids by binding aggressively to Sex Hormone Binding Globulin (SHBG). By occupying SHBG, it releases more of the other steroids (like Testosterone) into a "free" or biologically active state, making them more potent.

Q3: Can Proviron be used alone?

Proviron is generally not used alone in performance enhancement settings because its lack of strong anabolic activity would yield minimal muscle gains. It is highly effective only when stacked with aromatizing compounds (like Testosterone) that require anti-estrogen support.

Q4: Is Proviron a good choice for Post Cycle Therapy (PCT)?

Proviron is sometimes used during PCT to help elevate free testosterone levels, but it is not a substitute for SERMs (like Nolvadex or Clomid) which directly stimulate the pituitary gland to release LH and FSH. Proviron may also contribute to suppression, complicating its use post-cycle.

Q5: Is Proviron safer than an Aromatase Inhibitor (AI) like Arimidex?

Proviron is considered a milder anti-estrogen than powerful AIs like Arimidex. While it helps mitigate estrogenic effects, it is not as strong at drastically reducing total estrogen levels, often making it a preferred choice for users who want to avoid the adverse effects associated with overly suppressed estrogen.⁸