Get emergency medical help if you have signs of an allergic reaction to Hyzaar: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
a light-headed feeling, like you might pass out;
irregular heartbeats;
eye pain, vision problems;
kidney problems - little or no urination, rapid weight gain, swelling in your hands, feet, or ankles;
new or worsening symptoms of lupus - joint pain, and a skin rash on your cheeks or arms that worsens in sunlight; or
signs of an electrolyte imbalance - increased thirst or urination, confusion, vomiting, constipation, muscle pain, leg cramps, irregular heartbeats, numbness or tingling, severe weakness, loss of movement, feeling jittery or unsteady.
Common Hyzaar side effects may include:
dizziness;
back pain; or
cold symptoms such as stuffy nose, sneezing, sore throat.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Hyzaar side effects (more detail)
