Asymptomatic hypocalcaemia, flu-like symptoms, mild fever. Hypocalcaemia, hypophosphataemia. Hypomagnesaemia, hypokalaemia, increased serum creatinine; anaemia, lymphocytopenia, thrombocytopenia; HTN; headache, insomnia, symptomatic hypocalcemia (paraesthesia, tetany), somnolescence; nausea, vomiting, anorexia, abdominal pain, constipation, gastritis; pain, redness, swelling, induration, phlebitis, thrombophlebitis at infusion site; transient bone pain, arthralgia, myalgia, generalised & skeletal pain; rash; conjunctivitis.