High dose creatine IS A WASTE! More creatine than you can use will do nothig but give you the shits. Once your loaded, a lean person around 200lbs need no more than 5-7 grams a day for maintanance. Even the 10 gram a day level many supplement companies put on the side of the containers is a waste of creatine for many people. However, the bigger you are, the more you can use.
For post-steroid cycle use, I myself plan on using a bit more than I probably need (I'll have to see how much I gain before I can calculate how much) but nowhere near 50 grams! I have some pretty high quality data on creatine use. I'll pull it out and make a good post - I'f anyone hase some specific questions let me know...