Xeno Labs Proviron – 25mg/50tabs
✓ Boost Free Testosterone – Unlock more active testosterone by binding SHBG
✓ Extreme Muscle Hardness – Create that dry, dense, vascular look
✓ Natural Anti-Estrogen – Control estrogen without harsh AI side effects
✓ Explosive Libido – Maintain peak sexual function during any cycle
Original price was: $49.90.$44.90Current price is: $44.90.
Out of stock
Email when stock available
Why You Should Buy Xeno Labs Proviron – 25mg/50tabs at Steroiduck?
What It Does
Proviron contains Mesterolone at 25mg per tablet – a unique oral DHT (dihydrotestosterone) derivative that’s been used since the 1960s. Unlike most oral steroids, Proviron isn’t primarily used for building muscle. Instead, it’s valued for its ability to enhance other steroids’ effects while providing anti-estrogenic benefits and improving muscle hardness.
When you take Proviron, it binds strongly to Sex Hormone Binding Globulin (SHBG) – a protein that binds to testosterone and makes it inactive. By occupying SHBG, Proviron frees up more testosterone to work in your muscles. This means all the testosterone in your system (whether natural or injected) becomes more effective.
Proviron also has anti-estrogenic properties without actually blocking the aromatase enzyme. It competes with estrogen at receptor sites, reducing estrogenic effects throughout your body. Within 3-7 days, you’ll notice improved muscle hardness, reduced water retention, and enhanced libido.
The Main Benefits For You
Increases Free Testosterone
Proviron’s strongest benefit is freeing up bound testosterone. At any given time, most of your testosterone is bound to SHBG and inactive. By binding SHBG itself, Proviron releases more free testosterone into your bloodstream. This effectively increases your testosterone’s activity by 20-30% without injecting more.
Extreme Muscle Hardness
Proviron creates that hard, dry, dense muscle look that bodybuilders chase. It doesn’t cause water retention and actually helps reduce bloat from other compounds. Your muscles look full but carved and defined. Every muscle fiber shows. This makes it perfect for cutting and contest prep.
Natural Anti-Estrogen Effects
Unlike Arimidex or Letrozole that shut down estrogen production, Proviron works as a mild anti-estrogen by competing at receptor sites. This reduces water retention, gyno risk, and estrogenic side effects without crashing your estrogen completely. You maintain healthy estrogen for joints, libido, and mood while preventing excess.
Dramatically Improves Libido
As a DHT derivative, Proviron has powerful effects on libido and sexual function. Many users report their sex drive goes through the roof within days. If other compounds are killing your libido (looking at you, Deca and Tren), Proviron often brings it roaring back.
Enhances Other Steroids
Proviron makes every other compound in your stack work better by freeing up more active hormone. Your testosterone becomes more effective. Your other steroids bind better to receptors. The synergy creates better results than using compounds alone.
Mild and Easy to Use
With minimal side effects and no liver toxicity despite being oral (not C17-alpha alkylated), Proviron is one of the safest oral compounds. You can run it for extended periods without the harsh effects of other oral steroids.
Perfect for Cutting
During contest prep, Proviron is invaluable for maintaining muscle hardness, controlling estrogen, and keeping libido high despite being in a calorie deficit. It’s a staple in the final weeks before competitions for creating that dry, grainy look.
FDA DISCLAIMER: This product isn’t intended to diagnose, treat, cure, or prevent any disease. Mesterolone is a controlled substance and should only be used under proper medical supervision for legitimate medical purposes.
Recommended Dosage for Male:
25-100mg daily split into 1-2 doses. Beginners start with 25-50mg daily (1-2 tablets). Intermediate users run 50-75mg daily (2-3 tablets). Advanced users go to 75-100mg daily (3-4 tablets). Split daily dose: take half in morning, half in evening for stable blood levels.
Recommended Dosage for Female:
NOT recommended. Proviron is a potent DHT derivative that causes severe virilization in women including deep voice, facial hair, body hair, and other permanent masculine changes.
When to Take:
Take with meals for best absorption. If using 50mg daily, take 25mg with breakfast and 25mg with dinner. The 12-24 hour half-life allows twice-daily dosing to maintain stable levels.
Cycle Duration:
6-12 weeks for most users. Can be run throughout entire steroid cycle (12-16 weeks) due to mild nature and no liver toxicity. Some users run it continuously during cruise/TRT periods.
Stacking:
Proviron shines when stacked with other compounds. Bulking: Add to any testosterone cycle to reduce water retention and boost free test. Cutting: Stack with Winstrol, Anavar, or Masteron for extreme hardness. Essential during Deca or Trenbolone cycles to combat libido issues.
Timing in Cycle:
Can start from day 1 and run entire cycle. Many prefer adding it weeks 4-6 onward when water retention and estrogen become issues. For contest prep, essential in final 6-8 weeks.
Post Cycle Therapy (PCT):
Proviron does suppress natural testosterone despite common myths. Don't use during PCT as it will interfere with testosterone recovery. Stop Proviron when you stop other compounds and begin PCT 2 weeks later (for long esters).
Most Common:
- Mild to moderate testosterone suppression (less than other oral steroids)
- Acne on back, chest, or face (DHT-related)
- Accelerated hair loss if male pattern baldness runs in your family (this is a DHT derivative)
- Oily skin
- Possible increased aggression or irritability
- Reduced HDL (good cholesterol) moderately
Less Common:
- Prostate enlargement with long-term high-dose use
- Difficulty urinating in older users
- Headaches
- Mood changes
How to Manage:
Start with lower dose (25-50mg daily) to assess tolerance. Use Finasteride cautiously - it blocks DHT conversion but Proviron IS already DHT, so effects are limited. Monitor cholesterol with blood work. If experiencing hair shedding, reduce dose or discontinue if hair preservation is priority.
Important Note:
Proviron has excellent safety profile compared to other oral steroids. No liver toxicity since it's not C17-alpha alkylated. The main concern is hair loss for those genetically predisposed.
Active Ingredient:
Mesterolone (1α-methyl-4,5α-dihydrotestosterone)
Dosage Strength:
25 mg per tablet
Quantity:
50 tablets per bottle (1250mg total)
Form:
Oral tablets
Intended Use:
Primary FDA-approved use: Treating male hypogonadism, fertility issues, low androgen levels.
Primary bodybuilding use: Enhancing free testosterone, muscle hardening, estrogen control, libido support, contest preparation, stacking with other steroids.
Classification:
DHT (dihydrotestosterone) derivative, oral androgen, not C17-alpha alkylated
Mechanism of Action:
Mesterolone is DHT with a methyl group at the 1-position. Works through multiple mechanisms:
- SHBG binding: Binds strongly to Sex Hormone Binding Globulin, displacing testosterone and increasing free testosterone levels by 20-30%
- Anti-estrogenic: Competes with estrogen at receptor sites without inhibiting aromatase enzyme
- Androgenic effects: Binds to androgen receptors for hardness, libido, mood effects
- Does not aromatize: Cannot convert to estrogen
- Not anabolic: Very weak muscle-building effects on its own (used to enhance other compounds)
Half-Life:
12-24 hours (allows twice-daily dosing for stable levels)
Detection Time:
5-6 weeks after last dose in drug testing
Bioavailability:
Moderate oral absorption (approximately 3% bioavailability due to extensive first-pass metabolism, but effects are still significant)
Anabolic/Androgenic Ratio:
100-150:30-40 (moderate anabolic, low androgenic - but practical effects are primarily androgenic)
Aromatization:
None - Cannot convert to estrogen (is already DHT)
DHT Conversion:
Is already DHT derivative (no conversion needed)
Hepatotoxicity:
None - Not C17-alpha alkylated, so no liver toxicity even with extended use
Effects on Cholesterol:
Moderate negative impact. Reduces HDL (good cholesterol) by 10-20%. Less severe than other oral steroids.
Molecular Formula:
C20H32O2
Molecular Weight:
304.47 g/mol
Administration:
Oral tablet, swallow with water and food. Split daily dose into morning and evening for stable blood levels.
Storage:
Store at room temperature (68-77°F or 20-25°C) in a dry place. Protect from moisture and light. Keep in original container. Keep out of reach of children.
Also Known As:
Mesterolone, Proviron, Masterolone
RELATED PRODUCTS
Oxandrolone Tablets 50
Original price was: $120.00.$99.90Current price is: $99.90.
Clenbuterol HCL / Clen
Original price was: $55.00.$34.90Current price is: $34.90.
Anastrozole
Original price was: $59.00.$44.90Current price is: $44.90.
Methasterone
Original price was: $70.00.$54.90Current price is: $54.90.
Mesterolone 25mg/50tabs
$29.90