- Sustanon 250 is a blend of four testosterone esters totalling 250 mg per ml, about 176 mg of actual testosterone.
- It was designed for medical injections every three weeks, not for steadier levels. The short esters give an early spike; the long ester gives a tail.
- Most users inject it once or twice a week, at which point it behaves much like enanthate or cypionate.
- Side effects are the same as any testosterone: estrogen, hematocrit, blood pressure, cholesterol and suppression.
Sustanon 250 is one of the most famous testosterone products in the world, originally made by Organon. It has a reputation as a “super” testosterone because of its blend of esters. This guide explains what’s actually in it, why it was designed that way, and how it compares with the single-ester testosterones most Canadians use.
What’s in Sustanon 250?
| Ester | Amount per ml | Release |
|---|---|---|
| Testosterone propionate | 30 mg | Fast, peaks within a day or two |
| Testosterone phenylpropionate | 60 mg | Fast to medium |
| Testosterone isocaproate | 60 mg | Medium |
| Testosterone decanoate | 100 mg | Slow, lasts weeks |
The esters add weight, so 250 mg of the blend contains about 176 mg of testosterone itself.
Why it was designed this way
Sustanon was developed for men with low testosterone who needed fewer injections. The label dose for hypogonadism is one 1 ml injection every three weeks. The fast esters raise testosterone quickly after each injection and the decanoate keeps some testosterone in the blood until the next one.
The result is not steady: levels spike in the first days and drift down over the following weeks. That’s why many doctors now prefer weekly enanthate or cypionate, or daily gels, for more stable levels.
How people use it
Most non-medical users inject Sustanon once or twice a week. At that frequency the blend smooths out and behaves much like a single long ester. Because of the decanoate, it takes longer to clear completely after the last injection, which delays recovery of natural testosterone.
No magic in the blend. At the same weekly testosterone dose, Sustanon and enanthate produce similar results. Choose on price, availability and how often you’re willing to inject.
Side effects
Sustanon is testosterone, so it shares testosterone’s side effects:
- Higher estradiol: water retention, breast tenderness, gynecomastia
- Higher hematocrit (thicker blood)
- Lower HDL cholesterol and higher blood pressure
- Acne and hair loss in people prone to them
- Suppressed natural testosterone and sperm production
- Injection site soreness, more common with the fast esters
Bloodwork in Canada
Because levels swing more than with single esters, time blood draws consistently, ideally midway between injections. Check testosterone, estradiol, a complete blood count, lipids and liver function, and PSA if over 40. Order through your family doctor or LifeLabs or Dynacare.
Is Sustanon legal in Canada?
Testosterone and other anabolic steroids are Schedule IV substances under the Controlled Drugs and Substances Act. Possessing them for personal use isn’t an offence; trafficking, importing and exporting without authorization are.
Buying Sustanon in Canada
We stock Zionova Sustanon 250 in 10 ml vials (2,500 mg). Live prices are on the injectables page, alongside single-ester testosterone for comparison. See also our guides to testosterone enanthate and propionate.
Frequently asked questions
Is Sustanon better than testosterone enanthate?
Not at the same weekly dose. The blend was designed for infrequent medical injections; injected weekly, it performs much like enanthate.
How often is Sustanon injected?
The medical label is every three weeks. Most non-medical users inject it once or twice a week for steadier levels.
How much testosterone is in Sustanon 250?
About 176 mg of testosterone per ml; the rest of the 250 mg is the weight of the esters.
Why does Sustanon take longer to clear?
The decanoate ester releases slowly over weeks, so traces remain longer than with enanthate or cypionate.
Products mentioned in this guide
This article is general information for adults in Canada, not medical advice. Talk to a doctor or pharmacist before using any prescription drug, anabolic steroid or research compound, and get bloodwork done. If you’re in crisis, call or text 9-8-8 (Suicide Crisis Helpline) any time.
