Dizziness or light-headedness may occur as your body adjusts to the medication. Dry cough or swelling hands/ankles/feet may also occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if any of these serious side effects occur: fainting, fast/irregular/pounding heartbeat, symptoms of a high potassium blood level (such as muscle weakness, slow/irregular heartbeat), change in the amount of urine, signs of infection (such as fever, chills, persistent sore throat).
This drug may rarely cause serious (possibly fatal) liver problems. Tell your doctor right away if you notice any of the following serious side effects: yellowing eyes or skin, dark urine, severe stomach/abdominal pain, persistent nausea.
Some people who already have severe heart disease may rarely develop worsening chest pain or a heart attack after starting this medication or increasing the dose. Get medical help right away if you experience: worsening chest pain, symptoms of a heart attack (such as chest/jaw/left arm pain, shortness of breath, unusual sweating).
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.