yes absolutely! The one thing I would say is.. generally on lifting days you'd want anywhere from 1.8-2.2g of protein per kilogram of body weight.
On NON-lifting days.. lower that to about 1.0grams per Kilo.
I'm on a workout / nutrition plan and i take supplements (creatine, protein, caffeine, bcaa's, arginine) and wonder, on the days i don't workout, should i still take the supplements?