i love creatine and use it all the time. 5grms, 1hr before workout, 5grms right after. i use about 20 grms of glutamine a day, split up in 4 dosages.

i use them while on my cycle as well as off. i cycle to be as big as i can be and they help me reach that end. using it while on does decrease its effectiveness as a post cycle mass keeper though. weigh out the ads and disads of both an make a decision that meets your needs.