Zolephos 5 mg Infusion is used to treat osteoporosis (weak and brittle bones), Paget’s disease of bone and high calcium levels caused by cancer. It contains Zoledronic acid which works by preventing the bones from breaking down and keeps them strong. In some cases, this medicine may cause side effects such as headache, fever, nausea, dizziness, vomiting, diarrhoea, swelling, or pain at the infusion site. Inform the doctor if you are pregnant or breastfeeding, taking any other medication, or have any pre-existing medical conditions.