1-Test Cyp 100 (DHB) — Dihydroboldenone Cypionate by Dragon Pharma
1-Test Cyp 100 is Dragon Pharma's formulation of Dihydroboldenone Cypionate (DHB) at 100mg/ml — the 5-alpha reduced form of Boldenone (Equipoise), carrying an anabolic ratio of 200 and androgenic ratio of 100 with zero aromatisation. DHB is structurally to Boldenone what DHT is to testosterone — the 5-alpha reduced metabolite that cannot aromatise, produces harder, drier muscle gains, and carries greater androgenic activity in androgen-sensitive tissues. It is also widely noted for significant injection site pain that requires specific management strategies.
Also searched as: DHB, Dihydroboldenone Cypionate, 1-Testosterone Cypionate, 1-Test Cyp, DHB Dragon Pharma.
What DHB Is — The Dihydroboldenone Structure
The relationship between DHB and Boldenone (EQ) mirrors that between DHT and testosterone:
- Boldenone (Equipoise) is a mild aromatising AAS with anabolic ratio ~100 and androgenic ratio ~50. It aromatises to estradiol at approximately 50% the rate of testosterone
- Dihydroboldenone (DHB) is the 5-alpha reduced form of Boldenone — exactly as DHT is the 5-alpha reduced form of testosterone. The 5-AR enzyme reduces the double bond at the C1-C2 position of Boldenone, producing DHB
- Like DHT versus testosterone: DHB cannot aromatise (the 5-alpha reduction prevents aromatase from acting on it), has higher androgenic potency than its parent compound, and produces harder, more defined gains without water retention
- DHB's anabolic ratio of 200 is double testosterone's (100) — making it genuinely anabolic — while the androgenic ratio of 100 matches testosterone exactly. This anabolic:androgenic profile (2:1 ratio) is superior to testosterone's 1:1 while producing no estrogen
- DHB does not convert to DHT via 5-AR (it already is the 5-AR reduced form) — the standard Finasteride concern about DHT conversion does not apply
DHB vs Boldenone (EQ) — The Parent/Reduced Form Comparison
| Parameter | DHB (Dihydroboldenone) | Boldenone (EQ) |
|---|---|---|
| Anabolic ratio | 200 | ~100 |
| Androgenic ratio | 100 | ~50 |
| Aromatisation | None | ~50% of testosterone rate |
| 5-AR conversion | Already 5-AR reduced — no further conversion | Converts to DHB via 5-AR |
| Water retention | None — dry gains | Minimal from modest aromatisation |
| Erythropoiesis | Less pronounced than EQ | Pronounced — significant RBC increase |
| Injection pain | Significant — specific management required | Minimal |
| Available esters | Cypionate (this product) | Undecylenate (EQ 300/500) |
The Injection Pain Reality — An Honest Assessment
DHB's injection site pain is consistently underrepresented in competitor content and must be addressed directly:
- Dihydroboldenone Cypionate is notorious in the bodybuilding community for producing significant, sometimes severe injection site pain — not the mild post-injection soreness associated with compounds like Testosterone Enanthate, but pronounced pain, swelling and sometimes redness lasting 3-7 days after each injection
- The mechanism is not fully established but is believed to involve the compound's interaction with local tissue at the injection site — DHB at higher concentrations in a small oil depot is particularly irritating to surrounding muscle tissue
- Management strategies that meaningfully reduce (but do not eliminate) pain: diluting DHB with a less irritating oil compound (MCT oil alone, or drawing testosterone enanthate into the same syringe) — a 50:50 blend of DHB with another compound typically reduces pain substantially; limiting per-site injection volume to 1ml maximum; strict site rotation with minimum 48-72 hours before reinjecting the same site; using a slow, controlled injection technique with a smaller gauge needle
- Users who cannot tolerate the injection site pain from DHB are not making poor choices by switching to alternative lean mass compounds — this is a real and significant practical limitation
Effects and Benefits
- Lean, dry mass gains — no aromatisation means no water retention; gains are quality muscle tissue
- Anabolic ratio of 200 — double testosterone's anabolic potency at equivalent mg doses
- No AI required for DHB itself — zero estrogenic activity from this compound
- No conversion to DHT via 5-AR — already the 5-AR reduced form; no additional androgenic scalp/prostate activity from 5-AR conversion
- Moderately long duration from Cypionate ester — ~8-day half-life, twice-weekly injection
- Hardness and muscle density improvement — consistent with non-aromatising lean compounds
Dosage and Administration
| Experience Level | Weekly Dose | Volume at 100mg/ml | Frequency | Notes |
|---|---|---|---|---|
| First DHB cycle | 200–300 mg/week | 2–3 ml/week | Twice weekly (1–1.5ml per site) | Assess pain tolerance; blend with Test E if needed |
| Experienced | 300–400 mg/week | 3–4 ml/week | Twice weekly | Keep per-site volume ≤1ml to manage pain |
Given injection pain, blending DHB in the same syringe with Testosterone Enanthate or Masteron Enanthate at 50:50 is a widely used strategy that significantly reduces site discomfort. The Cypionate ester provides ~8-day half-life — twice-weekly injection maintains stable blood levels. The testosterone base is strongly recommended alongside DHB; DHB alone provides no esterogenic support and complete HPG suppression still occurs.
Side Effects
- Injection site pain — the primary practical limitation; see detailed discussion above
- HPG axis suppression — complete; Post Cycle Therapy required
- Androgenic effects — androgenic ratio of 100 (same as testosterone); acne, potential hair loss in predisposed individuals
- No estrogenic side effects from DHB — AI not required for DHB component; if stacked with testosterone, AI management for the testosterone aromatisation applies
- Lethargy — some users report fatigue during DHB use; mechanism unclear but commonly reported
Stacking DHB
- Enantat 250 — testosterone base alongside DHB; matched Cypionate/Enanthate half-lives for coordinated twice-weekly injection; blending in the same syringe also reduces DHB injection pain
- Masteron 200 — non-aromatising lean mass combination; Masteron's internal AI activity manages any testosterone aromatisation in the stack
- Primobolan 200 — fully non-aromatising lean mass pairing; both DHB and Primobolan produce dry quality gains with no estrogenic burden
"DHB (Dihydroboldenone) is Boldenone's 5-alpha reduced form — it doubles EQ's anabolic ratio to 200, eliminates its aromatisation entirely, and matches testosterone's androgenic ratio, at the cost of injection site pain that requires deliberate management with blending and strict site rotation."
Storage and Handling
Store 1-Test Cyp 100 at room temperature away from direct sunlight and heat. Use sterile technique for every draw. Warming the vial slightly before drawing may reduce viscosity.
