Like all medicines, this medicine can cause side effects, although not everybody gets them.
Side effects related to the first infusion are very common (occurring in more than 30% of patients) but are less common following subsequent infusions. The majority of the side effects, such as fever and chills, pain in the muscles or joints, and headache, occur within the first three days following the dose of Zoledronic Acid. The symptoms are usually mild to moderate and go away within three days. Your doctor can recommend a mild pain reliever such as ibuprofen or paracetamol to reduce these side effects. The chance of experiencing these side effects decreases with subsequent doses of Zoledronic Acid.
Common (may affect up to 1 in 10 people)
Irregular heart rhythm (atrial fibrillation) has been seen in patients receiving Zoledronic Acid for the treatment of postmenopausal osteoporosis. It is currently unclear whether Zoledronic Acid causes this irregular heart rhythm but you should report it to your doctor if you experience such symptoms after you have received Zoledronic Acid.
Uncommon (may affect up to 1 in 100 people)
Swelling, redness, pain and itching to the eyes or eye sensitivity to light.
Very rare (may affect up to 1 in 10,000 people)
Talk to your doctor if you have ear pain, discharge from the ear, and/or an ear infection. These could be signs of bone damage in the ear.
Not known (frequency cannot be estimated from the available data)
Pain in the mouth, and/or jaw, swelling or non-healing sores in the mouth or jaw, discharge, numbness or a feeling of heaviness in the jaw, or loosening of a tooth; these could be signs of bone damage in the jaw (osteonecrosis). Tell your doctor and dentist immediately if you experience such symptoms while being treated with Zoledronic acid or after stopping treatment.
Kidney disorders (e.g. decreased urine output) may occur. Your doctor should do a blood test to check your kidney function before each dose of Zoledronic Acid. It is important for you to drink at least 2 glasses of fluid (such as water), within a few hours before receiving Zoledronic Acid, as directed by your healthcare provider.
If you experience any of the above side effects, you should contact your doctor immediately.
Very common (may affect more than 1 in 10 people)
Fever
Common (may affect up to 1 in 10 people)
Headache, dizziness, sickness, vomiting, diarrhoea, pain in the muscles, pain in the bones and/or joints, pain in the back, arms or legs, flu-like symptoms (e.g. tiredness, chills, joint and muscle pain), chills, feeling of tiredness and lack of interest, weakness, pain, feeling unwell, swelling and/or pain at the infusion site.
In patients with Paget’s disease, symptoms due to low blood calcium, such as muscle spasms, or numbness, or a tingling sensation especially in the area around the mouth have been reported.
Uncommon (may affect up to 1 in 100 people)
Flu, upper respiratory tract infections, decreased red cell count, loss of appetite, sleeplessness, sleepiness which may include reduced alertness and awareness, tingling sensation or numbness, extreme tiredness, trembling, temporary loss of consciousness, eye infection or irritation or inflammation with pain and redness, spinning sensation, increased blood pressure, flushing, cough, shortness of breath, upset stomach, abdominal pain, constipation, dry mouth, heartburn, skin rash, excessive sweating, itching, skin reddening, neck pain, stiffness in muscles, bones and/or joints, joint swelling, muscle spasms, shoulder pain, pain in your chest muscles and rib cage, joint inflammation, muscular weakness, abnormal kidney test results, abnormal frequent urination, swelling of hands, ankles or feet, thirst, toothache, taste disturbances.
Rare (may affect up to 1 in 1,000 people)
Unusual fracture of the thigh bone particularly in patients on long-term treatment for osteoporosis may occur rarely. Contact your doctor if you experience pain, weakness or discomfort in your thigh, hip or groin as this may be an early indication of a possible fracture of the thigh bone. Low levels of phosphate in the blood.
Not known (frequency cannot be estimated from the available data)
Severe allergic reactions including dizziness and difficulty breathing, swelling mainly of the face and throat, decreased blood pressure, dehydration secondary to acute phase reactions (post-dose symptoms such as fever, vomiting and diarrhea).