irbesartan and hydrochlorothiazide (Oral route)
May cause injury or death to a developing fetus. Discontinue use as soon as possible if pregnancy is detected .
Commonly used brand name(s)
In the U.S.
Available Dosage Forms:
Therapeutic Class: Angiotensin II Receptor Antagonist/Thiazide Combination
Pharmacologic Class: Angiotensin II Receptor Antagonist
Chemical Class: Thiazide
Uses For irbesartan and hydrochlorothiazide
Irbesartan and hydrochlorothiazide combination is used alone or together with other medicines to treat high blood pressure (hypertension). High blood pressure adds to the workload of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly. This can damage the blood vessels of the brain, heart, and kidneys, resulting in a stroke, heart failure, or kidney failure. Lowering blood pressure can reduce the risk of strokes and heart attacks.
Irbesartan is an angiotensin II receptor blocker (ARB). It works by blocking a substance in the body that causes the blood vessels to tighten. As a result, irbesartan relaxes the blood vessels. This lowers blood pressure and increases the supply of blood and oxygen to the heart.
Hydrochlorothiazide is a thiazide diuretic (water pill). It reduces the amount of water in the body by increasing the flow of urine, which helps lower the blood pressure.
irbesartan and hydrochlorothiazide is available only with your doctor's prescription.
Before Using irbesartan and hydrochlorothiazide
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For irbesartan and hydrochlorothiazide, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to irbesartan and hydrochlorothiazide or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Appropriate studies have not been performed on the relationship of age to the effects of irbesartan and hydrochlorothiazide combination in the pediatric population. Safety and efficacy have not been established.
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of irbesartan and hydrochlorothiazide combination in the elderly.
|All Trimesters||D||Studies in pregnant women have demonstrated a risk to the fetus. However, the benefits of therapy in a life threatening situation or a serious disease, may outweigh the potential risk.|
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Interactions with Medicines
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking irbesartan and hydrochlorothiazide, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using irbesartan and hydrochlorothiazide with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
Using irbesartan and hydrochlorothiazide with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Arsenic Trioxide
- Perindopril Erbumine
Using irbesartan and hydrochlorothiazide with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Amtolmetin Guacil
- Choline Salicylate
- Enalapril Maleate
- Flufenamic Acid
- Ibuprofen Lysine
- Mefenamic Acid
- Niflumic Acid
- Salicylic Acid
- Sodium Salicylate
- Tiaprofenic Acid
- Tolfenamic Acid
Interactions with Food/Tobacco/Alcohol
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
Other Medical Problems
The presence of other medical problems may affect the use of irbesartan and hydrochlorothiazide. Make sure you tell your doctor if you have any other medical problems, especially:
- Anuria (not able to form urine) or
- Diabetes patients that are also taking aliskiren (Tekturna®) or
- Kidney disease, severe or
- Sulfa drug allergy (antibiotic or stomach medicines, eg, sulfamethoxazole, sulfasalazine, sulfisoxazole, Azulfidine®, Bactrim®, Septra®)—Should not be used in patients with these conditions.
- Asthma, or history of—May increase likelihood of having an allergic reaction.
- Congestive heart failure, severe—Use may lead to kidney problems.
- Diabetes or
- Electrolyte imbalances (eg, low levels of potassium, sodium, or magnesium in the body) or
- Fluid imbalances (caused by dehydration, vomiting, or diarrhea) or
- Glaucoma, secondary angle closure or
- Gout or
- Hypercalcemia (high calcium in the blood) or
- Hyperlipidemia (high cholesterol or fats in the blood) or
- Liver disease or
- Myopia, acute (changes in the eyeball causing vision problems) or
- Systemic lupus erythematosus (an autoimmune disorder)—Use with caution. May make these conditions worse.
- Kidney disease—Use with caution. The effects may be increased because of slower removal of the medicine from the body.
- Sympathectomy—Blood pressure–lowering effects of irbesartan and hydrochlorothiazide may be increased.
Proper Use of irbesartan and hydrochlorothiazide
In addition to the use of the medicine your doctor has prescribed, treatment for your high blood pressure may include weight control and care in the types of foods you eat, especially foods high in sodium (salt). Your doctor will tell you which of these is most important for you. You should check with your doctor before changing your diet.
Many patients who have high blood pressure will not notice any signs of the problem. In fact, many may feel normal. It is very important that you take your medicine exactly as directed and that you keep your appointments with your doctor even if you feel well.
Remember that irbesartan and hydrochlorothiazide will not cure your high blood pressure but it does help control it. Therefore, you must continue to take it as directed if you expect to lower your blood pressure and keep it down. You may have to take high blood pressure medicine for the rest of your life. If high blood pressure is not treated, it can cause serious problems such as heart failure, blood vessel disease, stroke, or kidney disease.
You may take irbesartan and hydrochlorothiazide with or without food.
If you are taking cholestyramine or colestipol, take Avalide® at least 1 hour before or 4 hours after these medicines.
The dose of irbesartan and hydrochlorothiazide will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of irbesartan and hydrochlorothiazide. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
- For oral dosage form (tablets):
- For high blood pressure:
- Adults—One tablet once a day. Your doctor may increase your dose if needed.
- Children—Use and dose must be determined by your doctor.
- For high blood pressure:
If you miss a dose of irbesartan and hydrochlorothiazide, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.
Ask your healthcare professional how you should dispose of any medicine you do not use.
Precautions While Using irbesartan and hydrochlorothiazide
It is very important that your doctor check your progress at regular visits to make sure that irbesartan and hydrochlorothiazide is working properly. Blood and urine tests may be needed to check for unwanted effects.
Using irbesartan and hydrochlorothiazide while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using irbesartan and hydrochlorothiazide, tell your doctor right away.
irbesartan and hydrochlorothiazide may cause dizziness, lightheadedness, or fainting, especially when you get up suddenly from a lying or sitting position. Make sure you know how you react to irbesartan and hydrochlorothiazide before you drive, use machines, or do anything else that could be dangerous if you are dizzy. If you feel dizzy, lie down so you do not faint. Then sit for a few moments before standing to prevent the dizziness from returning. If you faint, call your doctor right away.
Check with your doctor right away if you become sick while taking irbesartan and hydrochlorothiazide, especially if you have severe or continuing nausea, vomiting, or diarrhea. These conditions may cause you to lose too much water and lead to low blood pressure. You can also loose water by sweating, so drink plenty of water during exercise or in hot weather.
Check with your doctor immediately if blurred vision, difficulty with reading, eye pain, or any other change in vision occurs during or after treatment. This could be a sign of a serious eye problem. Your doctor will want you to have your eyes checked by an ophthalmologist (eye doctor).
irbesartan and hydrochlorothiazide may affect blood sugar levels. If you notice a change in the results of your blood or urine sugar tests, or if you have any questions, check with your doctor.
Ask your doctor before you use medicines, supplements, or salt substitutes that contain potassium.
Drinking alcohol or taking narcotic pain relievers or sleeping pills with irbesartan and hydrochlorothiazide may intensify feeling lightheaded, dizzy, or faint. Tell your doctor if you are drinking alcohol or using pain relievers or sleeping pills.
Do not take other medicines unless they have been discussed with your doctor. This especially includes over-the-counter (nonprescription) medicines for appetite control, asthma, colds, cough, hay fever, or sinus problems, since they may tend to increase your blood pressure.
irbesartan and hydrochlorothiazide Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:Less common
- Abdominal or stomach pain
- bloody or cloudy urine
- chest pain
- difficult with breathing
- difficult, burning, or painful urination
- fast, pounding, or irregular heartbeat or pulse
- frequent urge to urinate
- lower back or side pain
- nausea or vomiting
- numbness or tingling in the hands, feet, or lips
- weakness or heaviness of the legs
- Blurred vision
- dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
- loss of appetite
- muscle pain or cramps
- unusual tiredness or weakness
- Dark-colored urine
- hives or welts, itching, or skin rash
- large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
- muscle spasms or stiffness
- upper right abdominal or stomach pain
- yellow eyes and skin
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:More common
- Acid or sour stomach
- dryness or soreness of the throat
- joint pain
- stomach discomfort or upset
- tender, swollen glands in the neck
- trouble sleeping
- trouble swallowing
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
See also: Side effects (in more detail)
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More about hydrochlorothiazide/irbesartan
- Other brands: Avalide