Testosterone cypionate vs Testosterone enanthate
Written by Aaron CuhaReviewed Sep 2026
The short answer
The two standard injectable forms, and in effect they work the same. The differences that matter are practical. One has an eight day half life that makes a single weekly shot peak and crash. Only one of them has an approved weekly auto injector.
- Testosterone cypionate people
- 5,246
- Testosterone cypionate nulls
- 0
- Testosterone enanthate people
- 0
- Testosterone enanthate nulls
- 0
Dose
Approved medicine. No human dose established for unlabelled uses
Labeled amounts sit on the prescribing information. This page records what trials measured, not a personal dose.
FDA-approved as Depo-Testosterone for male hypogonadism, when a man's body makes too little testosterone. A Schedule III controlled substance. Not approved for women, or for age-related low testosterone in men with normal levels.
Dose
Approved medicine. No human dose established for unlabelled uses
Labeled amounts sit on the prescribing information. This page records what trials measured, not a personal dose.
FDA-approved for male hypogonadism, including as a weekly auto-injector pen that gives a shot under the skin. A Schedule III controlled substance. The auto-injector carries a boxed warning, the FDA's strongest, for raised blood pressure.
First-hand reports are counted on each profile and never added together. This page sets two published records side by side. It does not pick a winner.
Column A
Testosterone cypionateTestosterone cypionate, long-chain injectable ester
The most prescribed testosterone shot in the United States. It lasts about eight days in the body. That is why one big weekly shot gives a high and then a crash, and why splitting the same amount smooths it out.
Column B
Testosterone enanthateTestosterone enanthate, long-chain injectable ester
The other standard testosterone shot. For practical purposes it is the same as cypionate. It has one thing cypionate does not: an approved once-a-week auto-injector pen.
Side by side, on the facts we can check
| What we compare | Testosterone cypionate | Testosterone enanthate |
|---|---|---|
| Category | Hormone | Hormone |
| FDA status | FDA-approved as Depo-Testosterone for male hypogonadism, when a man's body makes too little testosterone. A Schedule III controlled substance. Not approved for women, or for age-related low testosterone in men with normal levels. | FDA-approved for male hypogonadism, including as a weekly auto-injector pen that gives a shot under the skin. A Schedule III controlled substance. The auto-injector carries a boxed warning, the FDA's strongest, for raised blood pressure. |
| Half-life | Roughly 8 days. That single number is the argument: at an eight-day half-life, a fortnightly interval spans nearly two half-lives, so levels at the end of the cycle are a fraction of the peak. | Roughly 7 to 8 days, close enough to cypionate that the two behave alike in practice. |
| Molecular weight | 412.6 Da. A steroid ester, not a peptide. | 400.6 Da. A steroid ester, not a peptide. |
| How it works | This is testosterone with a chemical tail called cypionate attached. The tail makes it dissolve in oil, so it sits in a small pool at the shot site. The body slowly snips the tail off and releases plain testosterone. So the tail sets how fast it comes out, not how strong it is. Once released, it is the same as the testosterone your body makes. It works on the same receptor and turns into DHT and estrogen the same way. How much levels rise and fall between shots depends on the tail and the gap between shots, not on how strong the hormone is. | This is testosterone with a chemical tail called enanthate attached. It dissolves in oil and sits in a small pool at the shot site. The body slowly snips the tail off and releases plain testosterone. Once released, it is the same as the testosterone your body makes. The tail is a little shorter than cypionate's, so in theory it comes out slightly faster. Nobody has shown that difference matters. |
| Studies in people | 1 | 1 |
| Evidence | Moderate: 1 completed trial, 5,246 people given it | Limited: 1 completed trial, none stating how many people |
| Legal status, US | FDA-approved, prescription only | FDA-approved, prescription only |
Frequently asked questions
What is the difference between Testosterone cypionate and Testosterone enanthate?
Testosterone cypionate: The most prescribed testosterone shot in the United States. It lasts about eight days in the body. That is why one big weekly shot gives a high and then a crash, and why splitting the same amount smooths it out. Testosterone enanthate: The other standard testosterone shot. For practical purposes it is the same as cypionate. It has one thing cypionate does not: an approved once-a-week auto-injector pen.
Which has stronger research evidence, Testosterone cypionate or Testosterone enanthate?
Each compound gets a band worked out from facts we counted, with the math shown. Testosterone cypionate is Moderate (1 completed trial, 5,246 people given it). Testosterone enanthate is Limited (1 completed trial, none stating how many people). That counts how much has been done in people. It does not rate whether either one works, and neither one is called the winner.
Are Testosterone cypionate and Testosterone enanthate FDA-approved?
Testosterone cypionate: FDA-approved as Depo-Testosterone for male hypogonadism, when a man's body makes too little testosterone. A Schedule III controlled substance. Not approved for women, or for age-related low testosterone in men with normal levels.. Testosterone enanthate: FDA-approved for male hypogonadism, including as a weekly auto-injector pen that gives a shot under the skin. A Schedule III controlled substance. The auto-injector carries a boxed warning, the FDA's strongest, for raised blood pressure..
Reviewed Sep 2026. This page puts two published records side by side. It is for learning, and it is not medical advice. When this site shows a dose, it is the dose a trial or a clinic actually used, or what people say they did, with the source attached. None of it tells you what to take.