Do it twice per week, like enth or cyp. It's a slightly longer ester than tren enth. I would start around 3-400mg/week, more than that and the long ester causes a build-up effect which leads to more side effects. Since it takes a while to clear the system, if you're prone to tren sides, start low. Also, at 600mg/week the pumps were so bad I couldn't lift, so I no longer run any higher than 400/week max on longer esters of tren.