Primobolan

About this compound.

Product Overview

Primobolan — the trade name for Methenolone Enanthate — has long held a unique position in the world of injectable anabolic steroids. Unlike the majority of injectable compounds, Primobolan combines meaningful anabolic activity with an exceptionally mild side effect profile, making it one of the very few injectable steroids suitable for both experienced athletes and first-time injectable users.

PharmaRx Primobolan 100mg/ml is formulated with the Enanthate ester — providing a half-life of 10–14 days for stable, sustained blood plasma levels with a simple once-per-week injection schedule. Produced in sterile pharmaceutical-grade manufacturing facilities with independently verified compound concentration, every vial of PharmaRx Primobolan delivers exactly what the label states.

Primobolan does not aromatize into estrogen, carries no risk of estrogenic side effects, and exerts only mild androgenic activity — making it equally valuable to male athletes seeking clean lean gains and female athletes looking for a viable injectable option at appropriately adjusted doses.

Key Benefits of PharmaRx Primobolan 100mg/ml

• Zero Aromatization — Methenolone Enanthate does not convert to estrogen, eliminating water retention, gynecomastia, and estrogen-driven fat gain

• Lean, Dry Muscle Gains — all gains are lean, hard, and keepable with minimal post-cycle loss

• Superior Muscle Preservation — exceptional nitrogen retention protects muscle tissue during caloric deficits and cutting phases

• Enhanced Nitrogen Retention — maintains positive nitrogen balance for sustained anabolic environment throughout the cycle

• Immune System Support — one of few anabolic steroids with demonstrated immune-enhancing properties

• Mild Androgenic Activity — androgenic rating of 44–57, significantly lower than testosterone, minimizing androgenic side effects

• No Liver Toxicity — injectable Methenolone Enanthate carries no hepatotoxic load

• Convenient Dosing — 10–14 day half-life allows once-per-week injection protocol

• Female-Friendly — one of the very few injectable anabolic compounds considered viable for female athletes at low doses

• Excellent for Recomposition — simultaneous lean mass gain and fat loss in a caloric maintenance protocol

• Minimal PCT Burden — mild suppression compared to most injectable anabolic steroids

• Stacks Effectively — synergistic with virtually all anabolic compounds for both bulking and cutting protocols

Product Specifications

Parameter | Details Product Name | PharmaRx Primobolan 100mg/ml Active Compound | Methenolone Enanthate Concentration | 100mg/ml Ester Type | Long-acting (Enanthate) Anabolic Rating | 88 (vs Testosterone = 100) Androgenic Rating | 44–57 (vs Testosterone = 100) Aromatization | None Administration Route | Intramuscular Injection (IM) Half-Life | 10–14 days Injection Frequency | Once per week Recommended Dose (Male) | 300–800mg per week Recommended Dose (Female) | 50–100mg per week Cycle Length | 12–16 weeks PCT Start | 2–3 weeks after last injection Detection Time | Up to 5 weeks Brand | PharmaRx

Primobolan vs Masteron vs Boldenone – Cutting Compound Comparison

Property | Primobolan (Methenolone E) | Masteron (Drostanolone E) | Boldenone (Equipoise) Anabolic Rating | 88 | 62–130 | 100 Androgenic Rating | 44–57 | 25–40 | 50 Aromatization | None | None | Low (~50% of Test) Half-Life | 10–14 days | 7–10 days | 14 days Water Retention | None | None | Minimal Muscle Hardening | Moderate | Excellent | Moderate Anti-Estrogenic | Mild | Strong | None Vascularity | Moderate | High | Very High Nitrogen Retention | Excellent | Good | Good Female Suitability | Good (low doses) | Moderate | Poor Best Use | Lean gains / Cutting / Recomp | Contest prep / Hardening | Lean bulk / Endurance Injection Frequency | Once per week | Once per week | Once per week

Primobolan 100mg/ml Cycle Protocols

Beginner Lean Muscle Cycle (12 Weeks)

The ideal first injectable cycle for users prioritising clean lean gains with minimal side effects.

• Primobolan 100mg/ml — 400mg per week (once weekly)

• Testosterone Enanthate 250mg/ml — 300mg per week (once weekly)

• Cycle Length: 12 weeks

• PCT: Start 3 weeks after last injection — Nolvadex / Clomid standard protocol

Intermediate Cutting Cycle (14 Weeks)

A powerful lean preservation stack for athletes in a caloric deficit seeking maximum muscle retention.

• Primobolan 100mg/ml — 600mg per week

• Testosterone Propionate 100mg/ml — 200mg per week (EOD)

• Drostanolone Propionate 100mg/ml — 400mg per week (EOD)

• Cycle Length: 14 weeks

• PCT: Start 3–4 days after last injection (short Test Prop base)

Advanced Body Recomposition Cycle (16 Weeks)

Elite-level recomposition protocol combining Primobolan's nitrogen retention with Trenbolone's extreme nutrient partitioning.

• Primobolan 100mg/ml — 600mg per week

• Testosterone Enanthate 250mg/ml — 400mg per week

• Trenbolone Enanthate 200mg/ml — 400mg per week

• Cycle Length: 16 weeks

• PCT: Start 3 weeks after last injection

Female Primobolan Cycle (10 Weeks)

One of the very few injectable anabolic compounds considered viable for female athletes when used at appropriately low doses.

• Primobolan 100mg/ml — 50–100mg per week

• Cycle Length: 10 weeks

• Monitor for virilization symptoms — discontinue immediately if they occur

Recommended Stacking Options

• Primobolan + Testosterone Enanthate — classic lean muscle foundation stack

• Primobolan + Testosterone Propionate + Drostanolone Propionate — elite cutting trio

• Primobolan + Testosterone Enanthate + Trenbolone Enanthate — advanced recomposition stack

• Primobolan + Boldenone Undecylenate — long-acting lean bulk combination

• Primobolan + Testosterone Enanthate + Nandrolone Decanoate — mass and preservation cycle

• Primobolan standalone (low dose) — female-specific lean preservation protocol

Who Should Use PharmaRx Primobolan 100mg/ml?

• Athletes prioritising clean, keepable lean gains over rapid mass accumulation

• Users sensitive to estrogenic side effects seeking a non-aromatizing injectable

• Bodybuilders in cutting or pre-competition phases requiring maximum muscle preservation

• Athletes pursuing body recomposition — simultaneous lean mass gain and fat reduction

• First-time injectable users seeking a mild, well-tolerated introduction to injectable anabolic steroids

• Female athletes requiring a low-androgenic injectable option at appropriately adjusted doses

• Advanced users building multi-compound stacks requiring a lean, dry anabolic base

Why Choose PharmaRx Primobolan 100mg/ml?

• Pharmaceutical-Grade Purity — produced in fully sterile, ISO-compliant manufacturing facilities

• Independently Verified — every batch tested for compound concentration accuracy and microbiological purity

• Exact 100mg/ml Concentration — verified accuracy, no underdosing

• Tamper-Proof Packaging — unique product verification code on every vial

• Authentic Product Guarantee — instant verification via PharmaRx secure portal

• Global Shipping — reliable, discreet worldwide delivery with full order tracking

Frequently Asked Questions – Primobolan 100mg/ml

What is Primobolan 100mg/ml used for?

Primobolan 100mg/ml (Methenolone Enanthate) is primarily used for lean muscle preservation during cutting cycles, quality lean mass gains without water retention, body recomposition, and as a mild first injectable cycle. It is widely regarded as one of the safest injectable anabolic steroids due to its very low androgenic activity and complete absence of aromatization.

What is the half-life of Primobolan Methenolone Enanthate?

Primobolan Methenolone Enanthate has a half-life of approximately 10–14 days, allowing for a convenient once-per-week injection protocol. This long-acting ester provides stable, sustained blood plasma levels throughout the cycle with minimal injection frequency.

Does Primobolan aromatize?

No. Primobolan (Methenolone Enanthate) does not aromatize into estrogen. Users experience zero estrogenic side effects — no water retention, no gynecomastia, no estrogen-related fat gain. This makes it one of the most side-effect-friendly injectable anabolic compounds available.

How does Primobolan compare to Masteron?

Both are non-aromatizing cutting compounds, but they differ significantly. Primobolan is milder with an anabolic rating of 88 and androgenic rating of 44–57, better suited for lean gains, muscle preservation, and longer cycles. Masteron has a stronger androgenic effect with superior muscle hardening and anti-estrogenic properties — better suited for short contest prep protocols at low body fat. Primobolan is generally preferred for lean bulk and recomp cycles; Masteron for final contest preparation.

What is a typical Primobolan cycle dosage?

Typical Primobolan Methenolone Enanthate cycles run at 300–800mg per week for 12–16 weeks alongside a Testosterone base. Beginners start at 300–400mg per week. Intermediate users run 500–600mg per week. Advanced users may use up to 800mg per week. Female athletes use 50–100mg per week maximum.