The enema tablet or laxative should not be taken too much and too commonly as it can depleted the body of mineral and vitamins Gastrointestinal side effects associated with sodium biphosphate-sodium phosphate tablets have included bloating (up to 47%), nausea (up to 37%), abdominal pain (up to 30%), and vomiting (up to 10%). Anal irritation, diarrhea, nausea, and stomach cramps have been reported with the enema formulation.