Table 5. Self-reported side-effects. Creatine Creatine + BE Placebo Total Abdominal Bloating 5 2 7 Constipation 1 1 Diarrhea 2 3 5 Muscle Cramp 1 1 2 Nausea 1 3 4 Muscle spasm 2 1 3 Water Retention 2 1 3 Intestinal gas 2 3 5