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super buff guy liftingProhormones: Androsterone, also known as 3-Alpha-Hydroxyetioallocholan-17-One, is a prohormone that is currently legal and available over the counter. Androsterone is legal because it has been found to be naturally occurring in pine pollen, and it can also be found naturally occurring most mammals and is excreted in urine as a normal part of human metabolism. (1, 2)

Androsterone and Epiandrosterone are essentially the same molecule, with androsterone being the 3-alpha isomer and epiandrosterone being the 3-beta isomer. While these two compounds are almost identical and both convert to stanolone, androsterone has one advantage over epiandrosterone. Androsterone not only does not convert to estrogen, but it also actually has anti-estrogen effects, making it particularly good to use during a cutting cycle to aid in fat loss. Because of this anti-estrogen effect, estrogen related side effects such as gynecomastia are not only not a concern, but androsterone can actually reduce these side effects when it is used with a prohormone that does convert to estrogen while on a bulking cycle. Because stanolone is very androgenic, one would think that androgenic side effects such as hair loss would be a big concern with androsterone. Luckily, this actually doesn’t appear to be too prevalent among users, but it is still something to keep an eye on. As mentioned before, this compound is great for cutting cycles. It can aid in fat loss and increase strength and feelings of well being and energy, all of which are certainly welcome on a cutting cycle. As with its 3-beta isomer epiandrosterone, androsterone appears to have some immediate neurological effects such as increased strength, agression, and energy.

While both androsterone and epiandrosterone may be used as a capsule, androsterone may be more powerful when used as a sublingual (where it is absorbed through the tissues under the tongue directly into the blood stream) and epiandrosterone looks promising to use as a transdermal (where it is applied to and absorbed through the skin). For this reason, androsterone products are often sold as a lozenge to be dissolved slowly in the mouth. The typical dosage range for androsterone is 300-400 mg/day, though some may dose higher. This is best used in 4-6 week cycles, with a mild over the counter post-cycle therapy to follow such as an all-in-one test booster and estrogen blocker, of which there are many to choose from.

Androsterone is a very versatile prohormone with many benefits to its use. Androsterone was included in the original version of LG Sciences T-911 for the pre-workout boost that it provides, and was also included at a low dose in a previous version of LG-Sciences Formadrol Extreme for its anti-estrogen properties. Currently, both epiandrosterone  and Androsterone are available in the prohormone Epi-1 Test. To get this product, just click the image below.



1. Simons, R. G., & Grinwich, D. L. (1989). Immunoreactive detection of four mammalian steroids in plants. Canadian Journal of Botany. 67, 288-96.

2. Metcalf MG. (1972). The excretion of androsterone and etiocholanolone as a function of adrenocrotical and gonadal activity. Clinical Biochemistry. 5(1), 19-32.

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