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Avalide

Last reviewed on RxList: 8/2/2017
Avalide Patient Information Including Side Effects

Brand Names: Avalide

Generic Name: hydrochlorothiazide and irbesartan (Pronunciation: HYE droe KLOR oh THYE a zide and ir be SAR tan)

What is hydrochlorothiazide and irbesartan (Avalide)?

Hydrochlorothiazide is a thiazide diuretic (water pill) that helps prevent your body from absorbing too much salt, which can cause fluid retention.

Irbesartan is an angiotensin II receptor antagonist. Irbesartan keeps blood vessels from narrowing, which lowers blood pressure and improves blood flow.

The combination of hydrochlorothiazide and irbesartan is used to treat high blood pressure (hypertension).

Hydrochlorothiazide and irbesartan may also be used for purposes not listed in this medication guide.

What are the possible side effects of hydrochlorothiazide and irbesartan (Avalide)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

In rare cases, hydrochlorothiazide and irbesartan can cause a condition that results in the breakdown of skeletal muscle tissue, leading to kidney failure. Call your doctor right away if you have muscle pain, tenderness, or weakness especially if you also have fever, nausea or vomiting, and dark colored urine.

Call your doctor at once if you have any other serious side effects, such as:

  • eye pain, vision problems;
  • feeling like you might pass out;
  • chest pain, feeling short of breath, even with mild exertion;
  • fever;
  • swelling, rapid weight gain;
  • urinating more or less than usual, or not at all;
  • jaundice (yellowing of the skin or eyes); or
  • dry mouth, increased thirst, drowsiness, restless feeling, confusion, increased urination, fast heart rate, feeling light-headed, fainting, or seizure (convulsions).

Less serious side effects may include:

  • stomach pain, heartburn;
  • muscle pain;
  • dizziness, drowsiness;
  • headache;
  • runny or stuffy nose, sore throat; or
  • dry cough.

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.

Read the Avalide (irbesartan-hydrochlorothiazide) Side Effects Center for a complete guide to possible side effects

What is the most important information I should know about hydrochlorothiazide and irbesartan (Avalide)?

Do not use hydrochlorothiazide and irbesartan if you are pregnant. Stop using this medication and tell your doctor right away if you become pregnant.

You should not use this medication if you are allergic to irbesartan or hydrochlorothiazide (Carozide, Diaqua, Ezide HCTZ, HydroDiuril, Microzide, and others), or if you are unable to urinate.

Drinking alcohol can further lower your blood pressure and may increase certain side effects of hydrochlorothiazide and irbesartan.

In rare cases, hydrochlorothiazide and irbesartan can cause a condition that results in the breakdown of skeletal muscle tissue, leading to kidney failure. Call your doctor right away if you have muscle pain, tenderness, or weakness especially if you also have fever, nausea or vomiting, and dark colored urine.

Avalide Patient Information including How Should I Take

What should I discuss with my healthcare provider before taking hydrochlorothiazide and irbesartan (Avalide)?

You should not use this medication if you are allergic to irbesartan or hydrochlorothiazide (Carozide, Diaqua, Ezide HCTZ, HydroDiuril, Microzide, and others), or if you are unable to urinate.

To make sure you can safely take hydrochlorothiazide and irbesartan, tell your doctor if you have any of these other conditions:

  • kidney disease;
  • liver disease;
  • congestive heart failure;
  • glaucoma;
  • low or high levels of potassium in your blood;
  • asthma or allergies;
  • high cholesterol or triglyceride levels;
  • gout;
  • lupus;
  • diabetes; or
  • an allergy to sulfa drugs or penicillin.

FDA pregnancy category D. Do not use hydrochlorothiazide and irbesartan if you are pregnant. Stop using this medication and tell your doctor right away if you become pregnant. Irbesartan can cause injury or death to the unborn baby if you take the medicine during your second or third trimester. Use effective birth control while taking hydrochlorothiazide and irbesartan.

It is not known whether hydrochlorothiazide and irbesartan passes into breast milk or if it could harm a nursing baby. You should not breast-feed while you are using hydrochlorothiazide and irbesartan.

How should I take hydrochlorothiazide and irbesartan (Avalide)?

Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.

Your doctor may occasionally change your dose to make sure you get the best results.

Your blood pressure will need to be checked often. Visit your doctor regularly.

Call your doctor if you have ongoing vomiting or diarrhea, or if you are sweating more than usual. You can easily become dehydrated while taking this medication, which can lead to severely low blood pressure or a serious electrolyte imbalance.

If you need surgery or medical tests, tell the doctor ahead of time that you are taking medication that contains hydrochlorothiazide. You may need to stop using the medicine for a short time.

It may take up to 4 weeks for this medication to control your blood pressure. Keep using this medicine as directed, even if you feel well. High blood pressure often has no symptoms. You may need to use blood pressure medication for the rest of your life.

Store at room temperature away from moisture and heat.

Avalide Patient Information including If I Miss a Dose

What happens if I miss a dose (Avalide)?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose (Avalide)?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include fast or slow heartbeat, feeling light-headed, or fainting.

What should I avoid while taking hydrochlorothiazide and irbesartan (Avalide)?

Drinking alcohol can further lower your blood pressure and may increase certain side effects of hydrochlorothiazide and irbesartan.

Avoid becoming overheated or dehydrated during exercise and in hot weather. Follow your doctor's instructions about the type and amount of liquids you should drink. In some cases, drinking too much liquid can be as unsafe as not drinking enough.

Do not use potassium supplements or salt substitutes while you are taking hydrochlorothiazide and irbesartan, unless your doctor has told you to.

What other drugs will affect hydrochlorothiazide and irbesartan (Avalide)?

Tell your doctor about all other medicines you use, especially:

  • any other diuretics or blood pressure medications;
  • steroids (prednisone and others);
  • lithium (Eskalith, Lithobid);
  • cholestyramine (Prevalite, Questran) or colestipol (Colestid);
  • insulin or oral diabetes medications;
  • a barbiturate such as amobarbital (Amytal), butabarbital (Butisol), mephobarbital (Mebaral), secobarbital (Seconal), or phenobarbital (Luminal, Solfoton);
  • aspirin or other NSAIDs (non-steroidal anti-inflammatory drugs) such as ibuprofen (Advil, Motrin), naproxen (Aleve, Naprosyn, Naprelan, Treximet), celecoxib (Celebrex), diclofenac (Arthrotec, Cambia, Cataflam, Voltaren, Flector Patch, Pennsaid, Solareze), indomethacin (Indocin), meloxicam (Mobic), and others;
  • a muscle relaxer such as baclofen (Lioresal), carisoprodol (Soma), cyclobenzaprine (Flexeril), dantrolene (Dantrium), metaxalone (Skelaxin), or methocarbamol (Robaxin), orphenadrine (Norflex), or tizanidine (Zanaflex); or
  • a narcotic medication such as hydrocodone (Lortab, Vicodin), meperidine (Demerol), methadone (Methadose), oxycodone (OxyContin), propoxyphene (Darvon, Darvocet), and others.

This list is not complete and other drugs may interact with hydrochlorothiazide and irbesartan. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about hydrochlorothiazide and irbesartan.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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