--Hypercalcemia, hypercalciuria, constipation, flatulence, nausea, abdominal pain, diarrhea, allergic reactions, pruritus, rash, urticaria, hypophosphatemia, milk-alkali syndrome, hypermagnesemia, drowsiness, flushing, hypotension, dry mouth, metallic taste, muscle weakness, hyporeflexia, hypotonia, apnea, cardiac arrhythmias, cardiac arrest, zinc toxicity, metallic taste, blood dyscrasias, anorexia, headache, dizziness, drowsiness, pruritus, rash, gastrointestinal disturbances.