Creatine causes cramping.
The idea that creatine use causes muscle cramping is anecdotal with no clinical evidence to support this claim. On the contrary, clinical studies show that creatine use is not associated with cramping. In one study, researchers examine 16 men who either supplemented with creatine or a placebo. Under specific dehydration conditions, the occurrence of cramping and tightness were reported in both groups, but "nothing that would suggest a greater incidence associated with creatine supplementation." Two other studies conducted at Arkansas State University in Jonesboro fond that creatine use by 61 Division I athletes during training camps had no effects on the incidence of muscle cramps, injury or illness. These athletes used 15-25g per day on the loading phase, and another 5g/day as maintenance.