First and foremost, it is important to mention that there is no risk what so ever of any Estrogen related side effects from Masteron Enanthate alone. As mentioned previously, Masteron Enanthate not only avoids aromatization into Estrogen completely, but it even acts as an anti-Estrogen in many cases. Therefore, the typical estrogenic side effects that result from the use of aromatizable anabolic steroids is avoided. This includes: bloating, water retention, blood pressure increases (as a result of water retention), acne, and gynecomastia. Because of Masteron’s anti-estrogenic properties, it can actually help prevent or mitigate these side effects if they are occurring from other anabolic steroids that do aromatize.