2D structure · PubChem CID 9416Testosterone enanthate

ZionovaInjectable

Zionova Testosterone Enanthate

Testosterone enanthate · Injectable (oil)

4.9 from 18 reviews

$96CAD

In stock, ships from Vancouver

Strength250 mg/ml

Pack10 ml vial

Total per order2,500 mg

Half-life≈ 4-5 days

Add $204 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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Delivery guaranteeLost or seized: reshipped free
Tracking in 72 hPacked in Vancouver
Interace-TransferFrom any Canadian bank
Plain packagingNo product names outside

Overview

Testosterone enanthate is plain testosterone bound to a seven-carbon ester. The ester holds the hormone in the oil depot so it trickles into the blood over several days instead of all at once. Alongside cypionate, it is the form endocrinologists reach for most when treating low testosterone.

How it works

After the ester is clipped off, testosterone activates androgen receptors in muscle, bone, skin and the brain. Some of it is converted to estradiol by aromatase and some to DHT by 5-alpha reductase. Any testosterone from outside the body also signals the pituitary to stop releasing LH and FSH, which switches off the testes’ own output.

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 ↗

Clinical reference

The Endocrine Society’s guideline for men with confirmed low testosterone works out to roughly 75 to 100 mg a week (or 150 to 200 mg every second week), fine-tuned with a blood test taken halfway between injections. Older labels allow 50 to 400 mg every two to four weeks, but shorter intervals keep levels flatter.

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

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Strength used: 250 mg/ml

Injection sites

Testosterone Enanthate 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 Enanthate

Intramuscular (IM)

Three common sites. Long-ester oils are usually smooth, so the ventrogluteal, outer thigh and deltoid all work; the deltoid only for small volumes.
Rotate. Reusing a spot before it settles causes lumps and scar tissue. Rotate between at least four spots.
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

Testosterone cypionate is a near twin: the half-life and the clinical amounts are practically the same.
hCG is commonly prescribed next to testosterone therapy to keep the testes active and protect fertility.
Aromatase inhibitors are added only when a blood test shows high estradiol together with symptoms; driving estradiol too low brings its own problems.

Drug interactions

Blood thinners such as warfarin: testosterone can push INR up, so it needs closer monitoring.
Insulin and diabetes tablets: blood sugar may fall and doses may need to come down.
Corticosteroids: more fluid retention and swelling.

Risks and bloodwork

Fertility and shutdown

While it is in your system your own testosterone and sperm production stop. Testicles shrink and sperm counts can reach zero; recovery can take many months and is not certain.

Thickened blood

Testosterone raises hematocrit. Blood that is too thick increases the chance of clots and stroke, and it is the most frequent reason doctors lower a dose.

Blood pressure and cholesterol

It can raise blood pressure and lower HDL cholesterol, more so at higher amounts.

Estrogen-related effects

Water retention and breast tissue growth (gynecomastia), which often needs surgery once established.

Skin and scalp

Oily skin, acne and quicker hair loss in men with a family history of baldness.

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

4.918 reviews from customers

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

BrettVerified buyerFeb 24, 2026

Works as expected