Proudly Serving Canadians Since 2012Testosterone Undecanoate has a half-life of approximately 20-33 days, depending on the estimate source. Anyway, it's one of the longest-acting testosterone esters, available on the market today.
It's usually used as a TRT option for men with low testosterone levels. IN higher doses, as any other test ester, it's associated with side effects such as acne, increased body hair growth, voice changes, and cardiovascular risks.