Trenbolone acetate 100 mg/mL

Basic Info

CAS Number	10161-34-9
Active Ingredient	Trenbolone, as the acetate or enanthate ester
Dosage Form	Oil vial
Specification & Packaging	Strength: 100 mg/mL Pack: 1 × 10 mL vial Group: 02 Item No.: 32

Storage & Common Excipients

Storage Conditions	Tightly closed, protected from light, 15–25 °C. Oil formulations may precipitate if refrigerated — follow the label
Common Excipients	Typical oil formulation: castor/corn/soybean oil, polysorbate 80, benzyl alcohol, benzyl benzoate, edetate disodium; confirm against COA

Product Introduction

A 19-nortestosterone derivative and a non-aromatising anabolic–androgenic steroid; the active ingredient of the historical bovine Trenbolone Acetate Implant. The entries here are oil injectables for research/non-human use

Therapeutic Use

No approved human indication. Historically used in veterinary medicine for bovine weight gain; human use is investigational

Mode of Action

The 9,11-double bond makes it essentially non-aromatisable, so oestradiol is hardly produced — the key difference from nandrolone/testosterone. Androgen-receptor affinity is several-fold higher than testosterone, giving strong anabolic activity with minimal oestrogenic effect; no progestogenic activity

Administration & Monitoring

Compliant research institutions only; animal studies should monitor weight, liver function (trenbolone is notably hepatotoxic) and reproductive status

Important Safety Information

Research compound, not a clinical medicine; a potent anabolic steroid, so non-medical use is unlawful. Severe hepatic adverse effects (hepatocellular lesions, cirrhotic-type changes) have been observed in animal studies

Adverse Reactions

Injection-site pain and inflammation; acne, hirsutism, hypertrophy of muscle and viscera; marked hepatotoxicity (raised transaminases, hepatocellular injury); dyslipidaemia and cardiovascular risk; reproductive suppression in men (testicular atrophy, reduced sperm count); insomnia and mood change; no marked oestrogenic symptoms because it is non-aromatising

Important Risks

Severe hepatotoxicity (the most characteristic risk); cardiovascular remodelling and myocardial hypertrophy; long-term dependence and reproductive suppression; psychiatric/behavioural disturbance (agitation, aggression)

Contraindications

No official contraindication information. By principle: pregnancy and lactation; known or suspected prostate cancer; severe hepatic impairment (particularly important for this compound); children and adolescents

Special Populations

Contraindicated in children and adolescents, pregnancy and lactation; contraindicated in hepatic impairment; should be avoided in older males and in heart-failure patients

Usage Limitations

Strictly prohibited in competitive sport (WADA Prohibited List); research use only; administration requires professional aseptic technique and site rotation

Anti-Doping Testing

WADA Prohibited List S1.1; targets trenbolone and its metabolites (e.g. trendione), detected in urine by GC-MS/MS and LC-MS/MS; ester prodrugs extend the detection window

Product Quality Testing

Identification (HPLC/MS), assay/content uniformity, related substances, clarity and particulate matter, fill volume, sterility and endotoxin, residual solvents, stability; COA