Generic name: Valsartan.

Diovan is an angiotensin II receptor antagonist, a new class of blood pressure medications. It works by preventing the angiotensin II hormone from constricting the blood vessels, which usually raises blood pressure. It begins working within 2 hours; and maximum effect is achieved between 6 and 24 hours. Generally considered to be safer than other antihypertensives. 

Quick Facts About Diovan


Used to control mild to moderate hypertension (high blood pressure).

Diovan Dosage

Take exactly as prescribed, with or without food. Do not increase dose or discontinue use without doctor’s approval.

  • Usual adult dose: initially — 80 milligrams once per day. Doctor may increase dose to no more than 320 milligrams once per day and recommend the use of a thiazide-type diuretic.
  • Usual child dose: not generally prescribed for children.
  • Missed dose: take as soon as possible, unless almost time for next dose. In that case, do not take missed dose; go back to regular schedule. Do not double doses.

Diovan Side Effects

Overdose symptoms:

low blood pressure (indicated by dizziness or fainting and rapid heartbeat). If you suspect an overdose, immediately seek medical attention.

More common side effects: fatigue, insomnia, upset stomach.

Rare Diovan side effects: allergy, appetite loss, back pain, chest pain, constipation, dizziness or fainting when rising from sitting or lying position, dry mouth, gas, heart palpitations, impotence in men, itching and rash, muscle cramps or pain, temporary swelling, vomiting, weakness.


Use Diovan carefully in combination with other blood-pressure-lowering medications.

Do not combine Diovan with over-the-counter medications that may raise blood pressure, such as decongestants, diet pills, or other stimulants.

Special Cautions

Diovan may cause injury and death to a fetus when used f during the second or third trimesters. If pregnant or planning to become pregnant, stop taking medication and inform your doctor immediately. Appears in breast milk; could affect a nursing infant.

No special precautions apply to seniors.

Not generally prescribed for children.

  • Use with caution if you have a history of kidney or liver disease.
  • Avoid strenuous exercise and very hot weather, and drink plenty of water to avert a rapid drop in blood pressure.
  • May increase levels of potassium in blood.


HealthSurvey.org provides accurate and independent information prescription pills, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. If you have questions about  dosage, or Diovan side effects, please contact your healthcare provider.