Primo-100
Specifications:
-
Packaging:
1 vial / 10 ml -
Concentration:
100 mg/ml -
Active Substance:
Methenolone Enanthate -
Active Half-life:
10-11 days -
Group:
Injectable Line -
Subgroup:
Primoboloan -
Recommended Dosage:
Men's Dose: 300-600mg per week. Women's Dose: 25-50mg per week. -
Oil-based:
Grapeseed oil -
Retains water:
No -
Aromatization:
No
Product Description:
What it is and How it Works
Primobolan (Methenolone) is a DHT-derived anabolic steroid known for its mild yet high-quality effects. It comes in both oral (Acetate) and injectable (Enanthate) forms, with the injectable being the more common and efficient option. Unlike many other compounds, Primobolan does not aromatize into estrogen, which means no risk of water retention or gynecomastia.
Primobolan promotes steady lean muscle gains, improved recovery, and enhanced fat metabolism without adding excessive bulk. It has a strong reputation for helping athletes preserve muscle during calorie restriction, making it especially popular in cutting phases. Because it is mild, side effects are typically limited to androgenic ones such as acne, oily skin, or hair loss in genetically prone individuals.
How is it used?
Primobolan has a long half-life when in the injectable Enanthate form, allowing injections once or twice per week. Its effects are not dramatic but are consistent, delivering slow, clean gains and enhanced muscle hardness.
It is often stacked with Testosterone or other compounds for cutting cycles or lean bulks. Solo use is possible but generally less effective than when combined with other anabolic agents.
Dose
This product is dosed at 100mg/ml × 10ml. Performance doses range from 300 to 600mg per week. Because of its mild nature, higher doses are sometimes used, but this can become costly given Primobolan’s price and limited anabolic strength.
Advice From BTW
- Best for cutting
Primobolan shines in a calorie deficit, preserving muscle while supporting fat loss.
- Stack smart
Works well with Testosterone or Masteron for hardening and with Anavar or Winstrol for contest prep.
- Low side effects
One of the mildest injectables, but do not mistake this for being side-effect free. Androgenic risks still exist.
- Patience required
Gains are slow and steady. Primo is about quality, not mass.
- Budget wisely
Primo is expensive. Plan your cycle and stack carefully to maximize return.
FAQs
- Is Primobolan good for bulking?
It can be used for lean bulks, but it is not a mass gainer. Primo’s value lies in slow, clean gains and muscle preservation.
- Does Primobolan aromatize?
No, it does not convert to estrogen, so there is no risk of bloating or gynecomastia.
- How long should I run Primobolan?
At least 10 to 12 weeks. Its mild nature and long half-life require longer cycles to see noticeable results.
- Is Primobolan safe for women?
Yes, in low doses it is one of the few anabolic steroids considered relatively female-friendly, though virilization risk still exists.
- Why is Primobolan considered a luxury compound?
Because it is expensive, mild, and often faked. Its reputation comes from being one of the cleanest, safest options with cosmetic benefits.
Protection code:

How it works:
BTW Labs prioritizes consumer well-being and continually develops various protective measures for its products, ensuring both patient safety and trust in the verification of our products.
Why Choose Us?
How it works:
We take pride in providing products that meet the highest standards of quality and consistency. Every batch is third-party tested to ensure accurate dosing and purity, so you know exactly what you are putting into your body. Our packaging is designed for both safety and discretion, and our customer support team is always available to provide guidance. Whether you are a beginner or an advanced athlete, choosing us means choosing reliability, trust, and a partner who values your performance and well-being.