This page describes pharmacological agents that may have legal restrictions, side effects, and drug interactions in your jurisdiction. Information is for educational research only — consult a clinician before considering any compound.
Surface here is educational only; do not use without medical supervision. Our editorial verdict is SKIP-FOR-NOW — current cost / risk / redundancy puts it below the line.
Methenolone
Mild DHT-derived AAS with a "clean" reputation — non-aromatizing, low androgenic, decent body comp.
Aliases (5)
Overview
What is Methenolone?
Methenolone (Primobolan) is a DHT-derived anabolic-androgenic steroid available as oral acetate or injectable enanthate. It is used in physique and recomposition cycles and historically in osteoporosis and muscle-wasting.
Key Benefits
Mild anabolic effect with low androgenic load, no aromatization to estrogen, supports lean muscle preservation in cuts, and is reputed for a relatively gentle side-effect profile when dosed conservatively.
Mechanism of Action
Binds the androgen receptor as a 1-methyl DHT derivative, driving anabolic protein synthesis and nitrogen retention in muscle without conversion to estrogen. Oral acetate undergoes substantial first-pass metabolism, reducing oral bioavailability.
▸ Vial inspection & sterile draw AAS oil
AAS oil arrives pre-suspended in carrier oil — no BAC water needed. Inspect for clarity, color, and crashed compound (cold storage can crystallize). Warm vial in palm or under hot tap before draw.
- 1 Wipe vial stopper with isopropyl alcohol.
- 2 Warm vial 30-60s in palm if oil is cold/cloudy.
- 3 Draw with 18g needle into 22-25g pin barrel for IM, or 27-29g for sub-Q.
- 4 Tap out air bubbles, expel a small drop, then inject at chosen site.
▸ Cycle structure & PCT AAS
Ramp dose over week 1, hold steady through cycle weeks. Track baseline labs (TT/FT/E2/SHBG/HCT/lipids/LFTs) at week 0; recheck at week 4 and end-of-cycle.
On the last dose, the ester clears over its half-life window (enanthate = est. 7 days). PCT begins after the active compound has cleared.
Standard PCT is enclomiphene 12.5-25 mg/day or clomid 50/50/25/25 over 4 weeks (or nolvadex 20/20/10/10). HCG bridge optional during cycle to preserve testicular volume + faster restart. Bloodwork at PCT week 4 + 8 to confirm HPG axis recovery (LH, FSH, TT back to baseline).
Research Indications
Methenolone enanthate (injectable)
long ester, ~10 day half-life, weekly dosing, NOT C17α-alkylated → low hepatic burden.
Methenolone acetate (oral)
C17α-alkylated to survive first-pass metabolism → meaningful hepatotoxicity, low oral bioavailability (~30-40%), short half-life requires…
Peptide Interactions
Primo is almost always run with a testosterone base in adult cycles — exogenous test prevents the symptomatic crash from suppression of endogenous T while Pr…
stacking multiple DHT-class compounds compounds androgenic side effects (hair, skin, prostate) and lipid impact without proportional muscle-building gain.
liver burden stacks supralinearly.
Quality Indicators
White, fluffy cake (peptides)
Lyophilized peptide should appear as a white, fluffy "cake" filling most of the vial bottom. Indicates proper freeze-drying.
Clear solution after reconstitution
After mixing with bacteriostatic water, the solution should be crystal clear with no particles or cloudiness.
Slight clumping acceptable
Small clumps that fully dissolve with gentle swirling are normal — shipping can cause minor compaction.
Collapsed or melted powder
Powder that looks collapsed, melted, or stuck to vial sides may have been heat-damaged in transit.
Cloudy or particulate solution
Persistent cloudiness or visible particles after gentle mixing indicate degraded or contaminated material.
What to Expect
- Week 1-2Frontload phase. Strength gains start; appetite up.
- Week 3-4Visible muscle fullness and recovery acceleration.
- Week 5-8Peak performance window. Monitor blood pressure + libido.
- Post-cyclePCT week 1-4. Bloodwork at week 6 post-cycle.
Side Effects & Safety
- Common (>10% users):
- HPG axis suppression (always — "mild" suppression is still suppression). LH/FSH drop within weeks.
- Reduced HDL, raised LDL/ApoB (DHT-class lipid impact, less severe than oral 17α-alkylated 19-nors but still meaningful).
- Mild androgenic effects: skin (oily, acne-prone in susceptible users), accelerated androgenic alopecia in genetically predisposed users (DHT-class).
- Less common (1-10%):
- Mood changes (typically mild — irritability, mild aggression).
- Hematocrit elevation (red blood cell mass increase) → cardiovascular risk if untreated.
- Sleep disruption.
- Rare-serious (<1% but worth knowing):
- Oral acetate only: hepatic strain (elevated ALT/AST, cholestasis), peliosis hepatis (rare, dose-and-duration dependent).
- Cardiac remodeling with chronic high-dose use (concentric LV hypertrophy — documented across AAS class, not Primo-specific).
- Persistent post-cycle hypogonadism — documented in young AAS users with otherwise healthy HPG axes, and risk likely higher when HPG axis is still maturing (late teens / early 20s).
- Specific watch periods:
- At age 20: HPG axis is still consolidating final adult set-point. Suppression at this age has higher theoretical risk of permanent change vs same suppression at 30. This is the core SKIP-AT-20 mechanism.
- Liver markers must be checked at week 4 of any oral cycle (acetate form).
How was your experience with this compound?
Anonymous · one vote per session · results below at 5+ votes.
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