Whats the minimum dose and duration of stanozolol should one take to have a good effect on the body?

i had been working out n had developed a decent muscle m(not too bulky n a good enough shape) but i got too involved with work n have lost 5 kgs(12lb) in the last 3 months. was thinking of starting again with the help of oral stanozolol. whats the minimum amount of dose n duration one should take the drug to have an acceptable effect. i just want to gain what i lost fast. i also started to use 60gm of whey protein daily. please advise!!