Testosterone Cypionate calculator
A long-acting injectable testosterone ester. A controlled substance and prescription drug for diagnosed hypogonadism.
Also known as: Depo-Testosterone, Test Cyp
FDA status — not an approved drug Testosterone cypionate is FDA-approved as a prescription drug for diagnosed testosterone deficiency. It is a Schedule III controlled substance; non-medical use is illegal and prohibited in sport.
This draw does not fit the selected syringe.10000 units exceeds the 100-unit barrel. Choose a larger syringe, use less bacteriostatic water, or split the dose.
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What Testosterone Cypionate is
Testosterone cypionate is a long-acting injectable ester of testosterone, an FDA-approved prescription drug for treating diagnosed testosterone deficiency (hypogonadism). It is a Schedule III controlled substance because of its anabolic effects and abuse potential; non-medical use is illegal and prohibited in sport.
Research depth: 5/5 Decades of approved medical use for hypogonadism; a controlled substance with real risks in misuse. Human trials: Approved for hypogonadism. This measures how much has been studied — counting animal and laboratory work — not whether it works for you.
How Testosterone Cypionate works
The cypionate ester slows the release of testosterone from the injection site, providing stable levels over about a week. Once released, testosterone acts on androgen receptors throughout the body to support muscle, bone, libido, and mood. Supraphysiologic doses drive the anabolic effects sought in misuse, along with their risks.
Testosterone Cypionate side effects
Commonly reported
- Injection-site pain
- Acne and oily skin
- Fluid retention
- Elevated red blood cell count
- Mood changes
Serious — seek medical care
- Suppresses natural testosterone and sperm production
- Can raise red blood cell count (polycythemia), increasing clot risk
- May worsen prostate conditions and affect cholesterol
- Schedule III controlled substance; prohibited in sport by WADA
This list is not exhaustive. Report anything unexpected to the clinician who prescribed it. If you have severe abdominal pain, trouble breathing, or signs of an allergic reaction, seek care the same day. See also our guide to peptide side effects by class.
A worked example
A 10 mg vial reconstituted with 10 mL of bacteriostatic water gives 1 mg/mL. A 100000 mcg dose is then 100 mL — about 10000 units on a 100-unit insulin syringe, giving roughly 0 doses per vial before accounting for residual volume left in the vial and syringe.
Prefer paper? Download the printable Testosterone Cypionate dosing chart (PDF) — every vial size and water volume in syringe units, with the same review byline as this page. All charts →
Commonly cited dose range
Figures circulating for Testosterone Cypionate run from 50000 mcg to 200000 mcg. Prescription dosing is in milligrams per injection on a weekly or similar schedule, individualized by a clinician. Figures shown are total milligrams in micrograms — 100,000 mcg is 100 mg. It is an oil-based intramuscular injection, not a reconstituted peptide.
Read this as reference information, not instruction. These numbers describe what is commonly discussed, not what is right for any individual. Dose, frequency, and whether to use Testosterone Cypionate at all are decisions for a licensed clinician who knows your history.
Common questions
Is testosterone cypionate legal to use?
Only with a valid prescription for diagnosed hypogonadism. It is a Schedule III controlled substance, so non-medical possession and use are illegal, and it is prohibited in sport by WADA.
How is testosterone cypionate different from a peptide?
It is not a peptide — it is a steroid hormone ester dissolved in oil for intramuscular injection. It appears on some supplier lists but is pharmacologically and legally distinct from peptides.