Currently, creatine is commonly used by athletes to help muscle building. Creatine supplements are thought to help muscles keep high supplies of ATP during anaerobic exersize. The idea behind this is to ingest approximately 20 grams per day in order to build the amount of creatine phosphate stored in muscle tissue. These creatine supplies could be used duing the initial short bursts of energy during weight lifting and other activities requiring short, explosive exertions. Increased muscle and tendon pulls seem to be associated with its use, but it is not known if there is a direct link to creatine use.
Dehydration is a problem because creatine pulls water into muscle cells.
Since complete testing was not done, the possible effects on the liver and kidneys is not known at this time.