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Proviroxyl 25 mg

For Oral Administration
Composition: Mesterolone
Dosage: 25 mg/tablet
Unit: 30 Tablets
Manufactured by Kalpa Pharmaceuticals

$50.00

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Proviroxyl – Kalpa Pharmaceuticals Mesterolone 25 mg Tablets

Proviroxyl by Kalpa Pharmaceuticals is a pharmaceutical-grade oral Mesterolone compound, dosed at 25 mg per tablet. Commonly known by the trade name Proviron, it plays a unique role in performance enhancement and post-cycle support by increasing free testosterone and modulating estrogen levels.

What Is Proviroxyl (Mesterolone)?

Mesterolone is a synthetic androgen that does not convert to estrogen and has minimal anabolic activity. It works primarily by binding to sex hormone-binding globulin (SHBG), freeing more testosterone for use in the body. Additionally, it exhibits anti-estrogenic properties without directly inhibiting aromatase.

Originally developed for treating androgen deficiency and male infertility, studies show that Mesterolone improves androgen levels, sperm quality, and sexual function—benefits now leveraged by bodybuilders in PCT and cutting phases.

Key Benefits of Proviroxyl

Increases free testosterone by reducing SHBG binding
Helps control estrogen levels indirectly
Enhances libido, mood, and sexual performance
Supports harder, drier muscle appearance during cutting cycles
No aromatization or conversion to DHT

How to Use Proviroxyl

For bodybuilders, 25–75 mg per day is commonly used during on-cycle or post-cycle phases. It can be taken solo or alongside other compounds to enhance androgenic activity. Typical use duration ranges from 4–8 weeks.

It pairs well with testosterone-based stacks or as a libido enhancer during Clomixyl or Nolvaxyl PCT protocols.

Stacking Options

Proviroxyl stacks well with dry, non-estrogenic compounds. Consider the following combinations:

Masteroxyl 200 – Drostanolone Enanthate for hard, lean gains
Trenboxyl Acetate 100 – for intensified androgenic synergy in aggressive cuts
Stanoxyl Depot – injectable Winstrol to enhance strength and dryness
Aromaxyl 25 mg – for direct estrogen control when needed

Who Is It Best For?

Proviroxyl is ideal for men looking to enhance testosterone utility, reduce estrogenic activity, and support libido during anabolic steroid use or PCT. It's a favorite among physique competitors, TRT patients, and mature athletes aiming to counteract SHBG or low libido symptoms.

Possible Side Effects

Increased aggression or irritability at high doses
May suppress natural testosterone with prolonged use
Acne and oily skin in androgen-sensitive users
Not suitable for women due to high androgenic index

Unlike many steroids, Proviroxyl does not damage the liver, nor does it convert to estrogen, making it a relatively safe compound when used responsibly.

Frequently Asked Questions

Does Proviron reduce testosterone?

Proviron (Mesterolone) does not suppress testosterone at therapeutic doses. However, prolonged high-dose use can mildly suppress natural testosterone production.

How long should Proviron be taken?

Proviron cycles typically last between 4 to 8 weeks. It is often used during cycles or post-cycle therapy depending on the goal—libido support, estrogen control, or SHBG binding.

Can you take Proviron by itself?

Yes, it can be taken alone to support libido or fertility. However, for muscle gain or fat loss, it is most effective when stacked with other anabolic agents.

What are the side effects of Mesterolone?

Common side effects include oily skin, acne, and increased libido. Rarely, users may experience mild testosterone suppression or mood swings at high doses.

Is Proviroxyl safe for use during PCT?

Yes, many users include Proviroxyl during PCT to maintain libido and increase free testosterone. It complements agents like Clomid or Nolvadex but should not replace them entirely.

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