At a glance
Effects
- Muscle growth: Strong AR activation increases protein synthesis and nitrogen retention in skeletal muscle, producing significant lean mass gains [1][5].
- Strength: Users consistently report rapid increases in strength, likely from combined anabolic and androgenic drive on muscle and the CNS [3][4].
- Fat loss / recomposition: Trenbolone reduces glucocorticoid activity and decreases fat deposition; commonly used during cutting and pre-competition phases [3][16].
- Feed / nutrient efficiency: Enhances how efficiently the body utilises dietary protein and calories, a core mechanism exploited in both veterinary and illicit use [2][3].
- Appetite stimulation: Secondary androgenic effects include stimulation of appetite, though this varies considerably between individuals [5].
- 'Tren cough': A short-lived, intense coughing fit immediately after injection, reported by a subset of users; exact mechanism is not fully established [1].
Anabolic-androgenic steroid (nandrolone derivative)
~2–3 days (acetate ester)
Intramuscular injection only
Schedule III controlled substance (CSA)
Up to ~5 months (urine)
About Trenbolone Acetate
Every point here is drawn from public medical and harm-reduction sources. A bracketed number after a claim — like [1]— is a reference: tap it to open the exact source it's based on (numbered list at the bottom). It is not a rating or score. Educational information, not medical advice.
Product specifics
- Est. delivery
- 3–7 business days · EU tracked
Product details as stated by the vendor (claims, not independently verified). Delivery is our standard EU estimate.
What it is
Trenbolone acetate is a synthetic anabolic-androgenic steroid (AAS) of the nandrolone group, approved only for veterinary use (promoting muscle growth and feed efficiency in cattle) and never approved for human medical use [1][2]. It is used illicitly in performance and physique sports for its potent muscle-building, strength-enhancing, and body-recomposition effects [3][4].
How it works
Trenbolone acts as a direct, high-affinity agonist of the androgen receptor (AR) — NCATS data places its AR binding affinity at roughly three times that of testosterone [5]. This AR activation drives increased muscle-cell nitrogen retention and protein synthesis rates, and also suppresses glucocorticoid (cortisol-like) hormones, reducing muscle catabolism [5][3]. Unlike testosterone, trenbolone does not aromatise to oestrogen, so water retention associated with oestrogen conversion does not occur; however it does have progestogenic activity, which can still contribute to gynecomastia in combination with oestrogen-converting compounds [1][8]. The acetate ester is hydrolysed post-injection to release free trenbolone with an active half-life of approximately 2–3 days, necessitating injections every other day to maintain stable blood levels [7].
Risks & side effects
Most important: The most critical risk is severe cardiovascular toxicity: trenbolone strongly suppresses HDL ('good') cholesterol, raises LDL, elevates blood pressure, and is associated with left ventricular hypertrophy, cardiomyopathy, and — in documented case reports — myocardial infarction even in young users [8][9]. These effects may persist or be irreversible after discontinuation [10].
Common
Serious
- Adverse lipid profile: suppressed HDL, raised LDL — strongly negative vs. other AAS [1]
- Left ventricular hypertrophy and cardiomyopathy [8][13]
- Hypogonadism from HPTA suppression (can persist post-cycle) [1]
- Hepatic stress and liver enzyme elevation [11]
- Kidney strain, darkened urine, altered renal function [10]
- Neuropsychiatric effects including severe aggression and psychological distress [12]
- Virilisation in women (voice deepening, hirsutism, clitoral enlargement) — largely irreversible [1]
- Scalp hair loss in genetically predisposed individuals — may be permanent [1]
Rare
- Myocardial infarction — documented in case reports, including in young users (23 y.o.) [9]
- Stroke and thromboembolic events [13]
- Potential beta-amyloid plaque accumulation in hippocampal brain regions (animal/preliminary data) [11]
- Gynecomastia via progestogenic pathway (especially when stacked with aromatising compounds) [8]
Safety & harm reduction
- Women (high virilisation risk — many effects irreversible: voice, hirsutism, clitoral changes) [1]
- Any person under 18 years of age
- Anyone with existing cardiovascular disease, hypertension, or dyslipidaemia [13]
- Anyone with hepatic or renal impairment [11]
- Anyone with a personal or family history of prostate or breast cancer
- Beginners to AAS — potency and side-effect profile require significant prior experience [15]
- Full lipid panel (HDL, LDL, triglycerides) — before, mid-cycle, and post-cycle [10]
- Liver enzymes (ALT, AST) — before, mid-cycle, and post-cycle [10]
- Blood pressure — monitor regularly throughout cycle [13]
- Haematocrit / red blood cell count (polycythaemia risk) [13]
- Prolactin levels (progestogenic activity) [10]
- Testosterone / LH / FSH (to assess HPTA suppression and guide PCT) [1]
- Renal function markers if prolonged use [11]
- Other AAS: additive cardiovascular and hepatic strain; avoid stacking without careful risk assessment [13]
- Anticoagulants (e.g. warfarin): AAS can alter platelet sensitivity and clotting; close INR monitoring required [13]
- SERMs (Nolvadex / Clomid): may worsen tren-induced gynecomastia by elevating progesterone; use with caution [8]
- Aromatase inhibitors: can further worsen HDL cholesterol suppression; monitor lipids closely [8]
- Insulin / hypoglycaemic agents: anabolic steroids can alter glucose metabolism
- Any hepatotoxic compound (alcohol, oral 17-alpha-alkylated steroids): compounded liver strain [10]
- Post-cycle therapy (PCT) with appropriate agents is essential to restore natural testosterone production after use [15]
- Cardiovascular support: omega-3 fish oil (commonly reported at 4 g/day) to partially mitigate lipid and blood-pressure impact [8]
- Do not combine with other methylated/oral steroids — compounds hepatic burden [10]
- Inject every other day (EOD) due to the ~2–3 day half-life to maintain stable plasma levels [7]
- Note: detection in urine can persist up to ~5 months — relevant for drug-tested sports [14]
Dosage context
Trenbolone acetate has NO approved human dosage. Commonly reported illicit bodybuilding ranges are 50–100 mg injected every other day for less-experienced users, with some more experienced users citing 100–150 mg EOD [7]. These figures are community-reported only, carry no clinical validation, and are NOT a prescription or recommendation. Higher doses proportionally increase all risks. The short half-life (~2–3 days) makes every-other-day injection necessary to maintain stable blood concentrations [7].
Sources
- 1.Wikipedia – Trenbolone acetate
- 2.ScienceDirect Topics – Trenbolone Acetate overview
- 3.Wikipedia – Trenbolone (parent compound)
- 4.PMC – Trenbolone Metabolites & Doping Control (NCBI)
- 5.NCATS Inxight Drugs – Trenbolone Acetate
- 6.Purefit Lab – Trenbolone Acetate dosages and cycles
- 7.Inside Bodybuilding – Trenbolone Side Effects
- 8.PMC – Myocardial Infarction due to Trenbolone Acetate (case report)
- 9.TeleTest – Side Effects of Trenbolone
- 10.ResearchGate – Adverse Effects of Trenbolone: Structured Review (2025)
- 11.ResearchGate / ScienceDirect – Trenbolone, psychological distress and aggression (2024)
- 12.Banner Health – Why You Should Think Twice Before Using Trenbolone
- 13.Swolverine – Clearance Times & Detection for Steroids
- 14.Swolverine – Tren 101: Understanding Trenbolone
- 15.ChemicalBook – Trenbolone Acetate: Strongest Steroid
This information is provided for educational and harm-reduction purposes only. It is not medical advice. These substances can carry serious health risks; effects and safe use vary by individual. Consult a qualified healthcare professional before use. Legal status varies by country — it is your responsibility to know your local law. We do not encourage misuse.
Other options for Trenbolone Acetate· 17 offers
Same compound from different labs/brands and pack sizes. Tap a row to switch brand — the price and buy button update instantly.
This compound comes in different forms (e.g. injectable vs oral vs topical). Cost per mg is only comparable within the same form.
| Brand | Form | Strength | Pack | Price | Per mg |
|---|---|---|---|---|---|
GenericSelected | topical-lotion | 100 mg/ml | 10 ml | 52,90 € | €0.053/mg |
Driada | vial | 100 mg/ml | 10 ml | 52,90 € | €0.053/mg |
Generic | vial | 100 mg/ml | 10 ml | 54,90 € | €0.055/mg |
EVO | vial | 100 mg/ml | 10 ml | 64,90 € | €0.065/mg |
EVO | vial | 150 mg/ml | 10 ml | 64,90 € | ★€0.043/mg |
Meta | vial | 100 mg/ml | 10 ml | 64,90 € | €0.065/mg |
Generic | ampoule | 100 mg/ml | 10 ampoule | 84,90 € | — |
Generic | vial | 100 mg/ml | 10 ml | 89,90 € | €0.090/mg |
Intex Pharma | vial | 100 mg/ml | 10 ml | 89,90 € | €0.090/mg |
Generic | vial | 100 mg/ml | 10 ml | 94,90 € | €0.095/mg |
Generic | ampoule | 100 mg/ml | 10 ampoule | 94,90 € | — |
Generic | — | — | 94,90 € | — | |
Generic | vial | 100 mg/ml | 10 ml | 109,99 € | €0.110/mg |
Hemi Pharma | vial | 100 mg/ml | 10 ml | 124,99 € | €0.125/mg |
Generic | oral-liquid | 40 mg/ml | 30 ml | 139,99 € | €0.117/mg |
Generic | topical-spray | 100 mg/ml | 100 ml | 189,99 € | €0.019/mg |
Generic | vial | 100 mg/ml | 30 ml | 479,99 € | €0.160/mg |