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Testosterone Enanthate

Also known as Test E, Testoviron

A long-ester injectable testosterone very similar to cypionate, common in TRT and cycles worldwide.

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)

Documented dose
100–600 mg
Typical frequency
Once or twice per week
Cycle
12 weeks on, 12 off
Half-life
Roughly 7 days
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

Testosterone enanthate behaves almost identically to cypionate with a marginally shorter ester. Medical replacement is around 100-200 mg per week; higher doses are used recreationally. Twice-weekly dosing keeps levels stable.

Mechanism

Androgen receptor agonist driving protein synthesis and red cell production. Aromatizes to estradiol. Suppresses the natural hormone axis while in use.

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 in oil - no reconstitution. Rotate injection sites and use a fresh needle each time.

Commonly reported side effects

  • Elevated estrogen and water retention
  • Acne and oily skin
  • Rising hematocrit
  • Blood pressure increase
  • Testicular shrinkage and suppression
  • Hair loss in predisposed people

Contraindications noted

  • Prostate or breast cancer
  • High hematocrit or clotting disorders
  • Uncontrolled hypertension or heart disease
  • Trying to conceive
  • Pregnancy or breastfeeding
  • Under 21 years of age

Research notes

Clinically studied at replacement doses only. Track testosterone, estradiol, hematocrit and lipids before, during and after use.

Vendors carrying Testosterone Enanthate

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.

Track this properly

Work out syringe units with the calculator, or set up a full schedule in about a minute.

Reference information only, not medical advice. See our medical disclaimer.