• Diovan is used to treat high blood pressure (hypertension) and heart failure. This drug works by blocking the hormone angiotensin II from narrowing the blood vessels, which tends to raise blood pressure.

How should you take this medication?

• Take this medication by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
   
• Take Diovan with a full glass of water, take it on a regular schedule to get the most benefit from it.
   
• if you miss a dose, take the missed dose as soon as you remember. However, if it is almost time for the next dose, skip the missed dose and take only the next regularly scheduled dose.

General Precautions with Diovan

• Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, liver disease, high blood levels of potassium, heart problems, or severe dehydration.
   
• Do not take diovan if you are pregnant or could become pregnant during treatment. Notify your doctor immediately if you think you might be pregnant.
   
• Diovan may cause dizziness, lightheadedness, or fainting; alcohol, hot weather, exercise, or fever may increase these effects. Use caution when driving, operating machinery, or performing other hazardous activities.

What are the possible side effects of Diovan?

• An allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include: rash, itching, swelling (especially of the face, lips, tongue, or throat), severe dizziness, difficulty breathing.
   
•  Check with your doctor if any of these common side effects persist or become bothersome: back pain, cough, diarrhea, dizziness, headache, joint pain, nausea, runny nose, sinus inflammation, sore throat, stomach pain, swelling, tiredness.