TEST 400

Generic Name: Testosterone Cypionate / Testosterone Enanthate
Strength & Packaging: 10 mL multidose vial containing 200 mg/mL testosterone cypionate + 200 mg/mL testosterone enanthate for a total concentration of 400 mg/mL, based on the composition you provided. Official labels for both ingredients describe them as testosterone esters for intramuscular administration.

Product Name & Packaging

TEST 400 (Testosterone Cypionate / Testosterone Enanthate Injection)
A sterile injectable androgen blend supplied as a 10 mL multidose vial. This presentation combines two long-acting testosterone esters—testosterone cypionate and testosterone enanthate—to provide a concentrated depot formulation for intramuscular use. Official labels for the individual esters describe them as clear, pale yellow to colorless oily solutions.

Description

TEST 400 is an androgen replacement formulation composed of testosterone cypionate and testosterone enanthate, both esterified derivatives of testosterone. Esterification prolongs the duration of action of testosterone after injection, allowing depot release following intramuscular administration.

Indications

Reference testosterone injection labeling supports use for replacement therapy in males with clinically confirmed deficiency or absence of endogenous testosterone, including primary hypogonadism and hypogonadotropic hypogonadism. Diagnosis should be confirmed clinically and with appropriate laboratory testing before therapy is started.

Dosage & Administration

For intramuscular use only. Do not administer intravenously. Official testosterone cypionate and testosterone enanthate labeling states that therapy should begin only after confirming low morning serum testosterone on at least two separate days. Injections are typically given deep in the gluteal muscle, and dose selection should be individualized according to diagnosis, response, and adverse effects. Because TEST 400 is a combination presentation rather than a standard single-ingredient label format, product-specific dosing should follow the prescribing clinician’s instructions and the applicable local product information.

Mechanism of Action

In responsive tissues, testosterone is partly converted to dihydrotestosterone (DHT), which binds to intracellular receptor proteins. The steroid-receptor complex then moves to the nucleus and initiates transcription events that produce androgenic effects, including maintenance of male sexual characteristics and related physiologic functions.

Precautions

Use only under the supervision of a qualified healthcare professional. Testosterone products require caution in patients with known or suspected prostate cancer, male breast cancer, serious cardiac, hepatic, or renal disease, polycythemia risk, or significant cardiovascular risk factors. Official labeling also warns about edema, venous thromboembolism, possible major adverse cardiovascular events, and the risk of abuse or misuse with anabolic-androgenic steroids. Testosterone products are classified as Schedule III controlled substances in the United States.

Side Effects

Adverse effects reported in testosterone injection labeling include gynecomastia, acne, male-pattern hair loss, injection-site pain or inflammation, fluid retention, polycythemia, headache, anxiety, depression, changes in libido, oligospermia at higher doses, and serious cardiovascular events such as myocardial infarction, stroke, and venous thromboembolism in some patients.

Storage

Store at 20°C to 25°C (68°F to 77°F). If crystals form during storage at lower temperatures, warming and gently rotating the vial may help re-dissolve them. Protect and store securely in accordance with applicable handling requirements for testosterone products.