Discontinue in case of pruritus, eruption, flare, erythema, xeroderma, nausea, vomiting, diarrhea, constipation, epigastric distress, anorexia, abdominal distention, epigastralgia, photosensitivity, convulsion, fever, coma, asystole, CNS dysfunction, hyperkalemia, pulmonary edema, urticaria. Acceleration of menstruation, menorrhagic extension of anovulatory menstrual cycle. Hypernatremia, CHF, edema at high doses. Hypercalcemia, nephrolithiasis on long-term use.