Testosterone decanoate is a long-acting ester of testosterone, typically used in hormone replacement therapy (HRT) or for androgen replacement in men with hypogonadism.
The half-life of testosterone decanoate is approximately 7-9 days. This means that it takes about 7-9 days for half of the testosterone decanoate to be cleared from the body. However, it may take several weeks for testosterone levels to fully return to baseline after discontinuing use.
The duration of action can vary slightly depending on individual metabolism and other factors, but generally, injections of testosterone decanoate are administered every 1 to 4 weeks for therapeutic purposes.
