2D structure · PubChem CID 9416Testosterone enanthate

Genetix PharmaInjectable

Testosterone 400 Genetix Pharma

Testosterone blend · Injectable (oil)

4.9 from 17 reviews

$120CAD

In stock, ships from Vancouver

Strength400 mg/ml

Pack10 ml vial

Total per order4,000 mg

Add $180 more for free Xpresspost.

You will need to inject it

Syringes Pack of 10 - 25 Gauge - 3ml$18Add

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What most customers add with this:

Arimidex Genetix Pharma$120.00 · Keeps estrogen in check

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Zionova Clomid$114.00 · For after your cycle

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Also in a kit · 10% offTestosterone Base7 items · $567See kit

Delivery guaranteeLost or seized: reshipped free
Tracking in 72 hPacked in Vancouver
Interace-TransferFrom any Canadian bank
Plain packagingNo product names outside

Overview

Testosterone 400 products combine more than one testosterone ester in a concentrated oil, reaching 400 mg per millilitre. Blending esters gives an early peak from the short one and a longer tail from the longer one.

How it works

Each ester is released at its own speed, but all of them deliver ordinary testosterone. Its effects and side effects are those of testosterone, at a higher concentration per millilitre.

Chemistry

From PubChem, the US National Library of Medicine’s chemistry database.

Testosterone enanthate

Formula: C₂₆H₄₀O₃
Molecular weight: 400.6 g/mol
CAS: 315-37-7
PubChem CID: 9416 ↗

Testosterone cypionate

Formula: C₂₇H₄₀O₃
Molecular weight: 412.6 g/mol
CAS: 58-20-8
PubChem CID: 441404 ↗

Clinical reference

No prescription product is made at this strength. Clinically, testosterone replacement still runs at about 75 to 100 mg a week, which is a small fraction of a millilitre of a 400 mg/ml oil, adjusted with bloodwork.

Label and guideline amounts are shown for reference only. They are not a recommendation, and we never give cycle or performance amounts. Any use belongs under a doctor’s care, with bloodwork.

Measuring calculator

Converts an amount you enter into what to measure. It does not suggest an amount.

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Strength used: 400 mg/ml

Injection sites

Testosterone 400 is an oil for intramuscular (IM) injection: deep into a large muscle, never under the skin or into a vein. Our injectables are made in MCT oil, which is thinner than the seed oils many labs use, so it draws and flows through a 25G needle more easily.

Commonly usedOlder site, use cautionAnatomy drawing: OpenStax & Tomáš Kebert, umimeto.org, CC BY-SA 4.0, recoloured.

Volume per site: Up to 3 ml
Needle: 25 to 38 mm, 22 to 25G

**Locating the ventrogluteal site**Concordia University Ann Arbor · School of Nursing · YouTube, plays here when clicked

Finding it. Place the heel of your hand on the bony bump at the top of the outer thigh, point your index finger at the front hip bone and spread your middle finger back along the hip crest. Inject in the centre of the V between the two fingers.

Why it is used. Current nursing guidance favours it for adults: a thick muscle under a thin, predictable fat layer, with no large nerves or vessels in the target area.

Watch out. The landmarks take practice; use a mirror or a helper the first few times.

Why these sites for Testosterone 400

Intramuscular (IM)

Largest muscles first. Short esters and high-strength blends are the oils most often reported to sting. The ventrogluteal and outer thigh handle them best; keep the deltoid for small volumes.
Rotate widely. Short esters are injected more often, so spread injections across more sites, left and right.
Warm the vial in your hands. Rolling the vial for a minute brings the oil to body temperature so it flows easily. Never heat it in water or a microwave.

Every time: wash your hands, wipe the vial stopper and skin with alcohol, use a new sterile needle and syringe, and never share. See a doctor for spreading redness, heat, swelling, pus, fever or numbness. This is general guidance from standard nursing practice, not medical advice; a pharmacist or nurse can show you in person.

Combinations and interactions

Prescribed or used alongside

Single-ester testosterone gives more predictable levels for anyone whose bloodwork is being followed by a doctor.
hCG is prescribed alongside testosterone when fertility matters.

Drug interactions

Anticoagulants: INR can rise.
Diabetes medicines: blood sugar may drop.

Risks and bloodwork

Concentrated oil

High-strength oils are more likely to sting or cause post-injection soreness.

Shutdown and fertility

Natural production and sperm counts fall while it is used.

Hematocrit and blood pressure

Both tend to rise with testosterone, more so at higher amounts.

Estrogen effects

Water retention and gynecomastia from conversion to estradiol.

Bloodwork doctors check

Complete blood count (hematocrit and hemoglobin)
Lipid panel (HDL, LDL, triglycerides)
Liver enzymes (ALT, AST)
Total and free testosterone, estradiol
LH and FSH
PSA for men over 40
Blood pressure

Not for

People under 18, anyone pregnant or breastfeeding, and anyone with prostate or breast cancer, heart disease, uncontrolled blood pressure, a high red blood cell count, untreated sleep apnea, or liver or kidney disease.

Canadian legal status

Anabolic steroids are listed in Schedule IV of the Controlled Drugs and Substances Act. Simple possession of a Schedule IV substance is not an offence under the Act; selling, importing or exporting one without authorisation is. Sports bodies that follow the World Anti-Doping Code ban them in and out of competition. This is general information, not legal advice.

References

Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice GuidelineBhasin S et al. · J Clin Endocrinol Metab, 2018 · PMID 29562364
The effects of supraphysiologic doses of testosterone on muscle size and strength in normal menBhasin S et al. · N Engl J Med, 1996 · PMID 8637535
Testosterone therapy and secondary erythrocytosisWhite J et al. · Int J Impot Res, 2022 · PMID 34987178
Recovery of spermatogenesis following testosterone replacement therapy or anabolic-androgenic steroid useMcBride JA, Coward RM · Asian J Androl, 2016 · PMID 26908067

Reviews

4.917 reviews from customers

Reviews are published after a quick check. Only customers who bought this product can review it.

Ron M.Verified buyerSep 17, 2026

Rated without a written review.