Acetazolamide

Generally, the common side effects tend to occur at the beginning of treatment. Such side effects may include:

• Mild nausea, vomiting, indigestion, abdominal pain, diarrhea and loss of appetite, taste disturbance - If the medicine upsets the stomach, take it with food or milk

• Headache, Drowsiness, dizziness, fatigue and unsteadiness - Be careful when you are giving your child over-the-counter medicines. Medicines for cold and allergy may add on to the drowsiness. Be sure to supervise your child when he/she is involved in activities such as cycling or swimming.   

• Double vision and blurred vision

• Muscle weakness, poor muscle coordination or numbness in the hands and feet (“pins and needles” sensation)

• Unusual behavioural changes such as hyperactivity, irritable or confusion

Inform your doctor if any of the above side effects lasts for more than a few days or if they become serious or bothersome.

Rare but serious side effects may sometimes occur. Contact your doctor as soon as possible if you notice any of the following:

• Skin rash

• Persistent blurred vision and/or eye pain

• Difficulty or pain when passing urine

• Yellowing of the skin or eyes, dark urine

• Any unusual bleeding or bruises, prolonged fever, cough or mouth sores

Inform your doctor if any of the above side effects lasts for more than a few days or if they become serious or bothersome.