Testosterone Blend (Sustanon 250)
Also known as Sustanon, Sust, Test blend, Omnadren
A blend of four testosterone esters in one oil - fast and slow release together.
Anabolic steroid — not a peptide
This compound is an anabolic steroid, not a research peptide. It has a different risk profile, legal status, and side-effect spectrum. The information here is for education only and is not medical advice or a recommendation to use. Read the medical disclaimer.
How it's taken (route)
a deeper shot into a muscle, usually the glute, thigh, or shoulder
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- Documented dose
- 250–750 mg
- Typical frequency
- Twice per week
- Cycle
- 12 weeks on, 12 off
- Half-life
- Mixed: roughly 20 hours to 15 days depending on ester
- Common vial sizes
- 250 mg
- Regulatory status
- Controlled anabolic steroid (Schedule III in the US). Prescription only.
Dose on a U-100 syringe
This dose is too large to draw in one standard U-100 insulin syringe at common mixes. It is typically drawn from a larger vial, mixed at a higher concentration, or split into more than one injection. Run your own vial through the reconstitution calculator.
What it does
Sustanon 250 mixes short, medium and long testosterone esters (propionate, phenylpropionate, isocaproate, decanoate) so it kicks in quickly and keeps releasing for days. Despite the marketing, most users still inject it twice a week to avoid peaks and troughs.
Mechanism
Identical androgen receptor action to any testosterone; the blend only changes release timing. Aromatizes to estradiol.
Storage — lyophilisedwhat's this?
Oil solution: room temperature, away from light.
Storage — reconstitutedwhat's this?
Keep the stopper clean and use within the labelled shelf life.
Reconstitution noteswhat's this?
Ready to inject. The blend is slightly thicker than single esters - warming the vial in your hand helps it draw.
Commonly reported side effects
- Estrogen rise and water retention
- Acne and oily skin
- Rising hematocrit
- Blood pressure increase
- Suppression of natural production
Contraindications noted
- Prostate or breast cancer
- High hematocrit
- Uncontrolled hypertension or heart disease
- Trying to conceive
- Pregnancy or breastfeeding
- Under 21 years of age
Research notes
No advantage over a single ester for most people; blends simply complicate timing. Bloodwork requirements are the same.
Vendors carrying Testosterone Blend (Sustanon 250)
These research suppliers list this compound. Prices, vial sizes and testing vary — always check the current lot certificate before you buy.
Peptide Streak does not sell peptides and is not affiliated with these vendors. Some list metabolic compounds under coded product names.