Testosterone B100 (Testosterone Base) is an injectable steroid that contains testosterone with no ester attatched to it. It is pure testosterone and has no ester attached, and thus no ester calculated in the weight. Where 100 mg of a testosterone ester equals 100 mg minus the weight of the ester, 100 mg of Testosterone B100 contains an actual 100 mg of the steroid. Very potent and very powerful. Although it is a rather crude compound, it is without a doubt very, very effective. Testosterone is the most common anabolic hormone that there is and is also considered the most basic. Due to this, bodybuilders often consider it the base steroid to most all cycles. Testosterone is both anabolic and androgenic in nature. Users of this steroid will notice a dramatic gain in muscle size and strength, as well as an overall sense of well being and increases libido and sex drive. Testosterone aromatizes very easily and therefore estrogen buildup and side effects can become an issue for users sensitive to these problems or those choosing to use a high dose of this compound. Therefore, when using Testosterone, bodybuilders often choose in incorporate an anti-estrogen such as Anastrozole, Proviron, Tamoxifen to help keep estrogen related side effects to a minimum. Extremely sensitive users, or users using very high doses (800-1200mgs) might find that stronger anti-estrogens such as Letrozole or Exemestane are more suitable. Androgenic side effects such as oily skin are also possible while taking Testosterone. Bodybuilders looking to bulk up, often stack Testosterone B100 with other steroids such as Deca 250 and/or Boldenone 200. T The male bodybuilder's dosage of this steroid would typically be in 400-1200mg per week range and cycle duration would be from 8-20 weeks, depending of course on the goals of the athlete. Women typically see desirable results from doses of 50-100mgs per week.