Epiandrosterone, also called Epi-Andro, is an androgenic steroid hormone, which is a natural metabolite of DHEA and converts to Dihydrotestosterone (DHT).  Known in the fitness world as a prohormone, it is considered a precursor to stanolone, but this simply means that epiandrosterone converts to DHT in the body.  Epi-andro is naturally found in most mammals, and it is excreted as a normal part of metabolism when we urinate.  In fact, it is also naturally found in pine pollen.

Interestingly, many people confuse Androsterone with Epiandrosterone, and although they are very similar, the difference is that Androsterone is a 3-alpha isomer, and Epi is a 3-beta isomer of the compound.  Therefore, Epiandrosterone actually does contain androsterone within the compound.


Fig 1. Epiandrosterone

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Epiandrosterone was discovered in the very early 1930's, when researchers distilled male urine and got a small percentage of crystalline androsterone.  During the pro-hormone boom of the 90's and onward, Epiandrosterone became very popular because of its unique qualities and advantages, which we will discuss below.

How it works and DHT

Epiandrosterone converts to DHT in the body.  DHT is our male sex hormone, so it will cause an increase in strength, and it will help maintain muscle mass.  What's more, DHT helps inhibit estrogen conversion in the body, so it will help dry out the user and give the impression of a loss of body fat, since water is shed from within cells.  Another secret is its ability to bind to SHBG (sex hormone binding globulin), leading to a greater ratio of free testosterone to total testosterone.  In the end of the day, it is this 'free testosterone' that really matters, not the total testosterone.

Side effects

Estrogen is not an issue when using Epiandrosterone.  Consequently, the user does not have to worry about water retention and the domino effect of side effects that accompany it.  Furthermore, they also do not have to worry about gynecomastia (bitch tits), as it is not possible to have any estrogen aromatization with epi-andro.

However, there is one problem with DHT, and it is related to its effects on head hair loss.  DHT will fry your head hair, especially if you are predisposed to such condition.  Another issue is possible joint discomfort from the dryness the user can experience.  Although it is tempting to use such DHT inhibitors (5a reductase inhibitor) as finasteride or dutasteride to help protect the hair, one must keep in mind that DHT is our sex hormone, and it is what gives males penises in the first place.  Inhibiting this hormone brings along the risk of short and long term sexual dysfunction.

In spite of the fact that epi-andro is considered a mild compound, just like any hormone, the user must respect it and expect some organ strain, even though it is safe on the liver.  Due to its effects on blood pressure, and the heart in general, a support supplement such as N2Guard would be a wise choice.

Moreover, like all exogenous hormones it will cause suppression, so a post cycle therapy (PCT) should always be used.   Please see the perfect PCT for the optimal PCT protocol.

User results

Users get the DHT type results of muscle hardness, some fat loss, water loss, increased lean muscle mass, and an increase in libido.  Nonetheless, the results are not dramatic in those looking to move the scale upwards, or put on a lot of large muscle mass, so if that is your goal you should look elsewhere.


The dosage of Epiandrosterone is around 250-400 milligrams (mgs) per day.  Since it is not liver toxic, users will sometimes run it for up to 10 weeks.  However, new users should not exceed 6 weeks in order to determine how they react to its strong DHT properties.


Want to read about Epiandrosterone on our forums? check out these threads:


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