Methandienone (also known as Methandrostenolone) is the active substance of the Dianobol-lab 20.
Dianobol-lab 20 is mostly used in bulking cycles however most of "gains" made by it are related to water retention. It can easily aromatize and cause water retenton, risk of gynecomastia, elevated blood pressure and acne.
Used mostly as a kick start for the first 4 weeks of steroid cycle at 20-40mg/day for cycles where user wants gains and strength and does not care about water retention or bloating effect.
Since it is 17Alpa and put stress on liver it is not recommeded to use it longer than 6 weeks and not more than 40mg/day.
Since Dianobol-lab 20 will surpress natural testosterone production PCT is always a must after cycle.