Prohormone stacks are supplements with a blend of various prohormones selected in such a way to produce synergistic effects. Stacks comprise also sometimes adjuvants with anti-estrogenic properties, e.g. tamoxifen, which help reduce side effects of prohormones.
Prohormones are substances which are precursors to commonly known anabolic hormones such as insulin and testosterone. When they are supplied to the body, they undergo enzymatic reactions which lead to the formation of a target hormone. This causes an increase in its serum levels and thus maximises its effects.
As a result, during the use of prohormone stacks, we can observe an extremely high increase in muscle strength, mass and volume. However, we should remember about intense strength training and carefully balanced diet.