I haven't taken it in 2 yrs, when I was I started with 50mg. After a month or two it took 100mg to get the same effect as 50. I never went higher than that was only on it about 3 months.
The thing was I had met a really hot chick the same time I got 'deca dick'. She wanted to screw all the time, so I was taken it every day. Probably not the original intention of the drug.