Side Effects

Dizziness, lightheadedness, drowsiness, headache, fatigue, blurred vision, dry cough, or vomiting may occur as your body adjusts to the medication. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

This product may cause dehydration and electrolyte imbalance. Tell your doctor right away if you have any symptoms of dehydration or electrolyte imbalance, including: extreme thirst, very dry mouth, muscle cramps/weakness, fast/slow/irregular heartbeat, confusion.

Tell your doctor right away if you have any serious side effects, including: fainting, decreased sexual ability, tingling or numbness of the hands/feet, decrease in vision, eye pain, signs of kidney problems (such as change in the amount of urine), seizures, symptoms of a high potassium blood level (such as muscle weakness, slow/irregular heartbeat).

This product may rarely cause serious (possibly fatal) liver disease. Get medical help right away if you have any symptoms of liver damage, including: nausea/vomiting that doesn’t stop, loss of appetite, stomach/abdominal pain, yellowing eyes/skin, dark urine.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US – Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada – Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

How to use Benazepril-Hydrochlorothiazide

Take this medication by mouth with or without food as directed by your doctor, usually once a day. Use this medication regularly in order to get the most benefit from it. Remember to use it at the same time each day.

Drink adequate fluids to prevent from becoming dehydrated. If you are on restricted fluid intake, consult your doctor for further instructions.

The dosage is based on your medical condition and response to treatment. For the treatment of high blood pressure, it may take 2 weeks before the full benefit of this drug occurs or several weeks to months when used for heart failure.

Keep taking this medication even if you feel well. Most people with high blood pressure do not feel sick.

If you are also taking cholestyramine or colestipol, take benazepril/hydrochlorothiazide at least 4 hours before or at least 4 to 6 hours after either of those drugs.

Precautions

Before taking benazepril with hydrochlorothiazide, tell your doctor or pharmacist if you are allergic to it; or to other ACE inhibitors (such as captopril, lisinopril); or if you have any other allergies (including an allergic reaction after exposure to certain membranes used for blood filtering). This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease (such as anuria), liver disease, history of an allergic reaction which included swelling of the face/lips/tongue/throat (angioedema), severe loss of body fluids (dehydration through excessive sweating, vomiting, or diarrhea), mineral/electrolyte problems (such as imbalance of sodium, potassium, magnesium, calcium), gout, lupus, asthma, skin cancer.

This drug may make you dizzy or drowsy. Alcohol or marijuana (cannabis) can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).

This product may affect your potassium levels. Before using potassium supplements or salt substitutes that contain potassium, consult your doctor or pharmacist.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

This medication may make you more sensitive to the sun. It may also increase your risk for skin cancer, especially if you take it for a long time. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors. Tell your doctor right away if you get sunburned, have skin blisters/redness, or notice new or changed moles/skin lesions.

If you have diabetes, hydrochlorothiazide may affect your blood sugar. Check your blood sugar regularly as directed and share the results with your doctor. Tell your doctor right away if you have symptoms of high blood sugar such as increased thirst/urination. Your doctor may need to adjust your diabetes medication, exercise program, or diet.

Older adults may be more sensitive to the side effects of this drug, especially dizziness and change in the amount of urine (kidney problems).

Tell your doctor if you are pregnant or plan to become pregnant. You should not become pregnant while using this medication. Benazepril may harm an unborn baby. If you become pregnant, talk to your doctor right away about the risks and benefits of this medication.

A very small amount of this drug passes into breast milk. While there have been no reports of harm to nursing infants, consult your doctor before breast-feeding.

Consult your pharmacist or physician.

Interactions

See also How to Use and Precautions sections.

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.

Some products that may interact with this drug are: aliskiren, diazoxide, dofetilide, certain drugs that weaken the immune system/increase the risk of infection (such as everolimus, sirolimus), drugs that may increase the level of potassium in the blood (such as ARBs including losartan/valsartan, birth control pills containing drospirenone), lithium, probenecid, gold injections, sacubitril.

A very serious reaction may occur if you are getting injections for bee/wasp sting allergy (desensitization) and are also taking benazepril with hydrochlorothiazide. Make sure all your doctors know which medicines you are using.

Some products have ingredients that could raise your blood pressure or worsen your heart failure. Tell your pharmacist what products you are using, and ask how to use them safely (especially cough-and-cold products, diet aids, or NSAIDs such as ibuprofen/naproxen).
Does Benazepril-Hydrochlorothiazide interact with other drugs you are taking?
Enter your medication into the iMedix interaction checker

Overdose

If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: unusually fast or slow heartbeat, severe dizziness, or fainting.

Do not share this medication with others. Lifestyle changes such as stress reduction programs, exercise and dietary changes may increase the effectiveness of this medicine. Talk to your doctor or pharmacist about lifestyle changes that might benefit you.

Lab and/or medical tests (such as kidney function, potassium blood level, skin exams) should be done while you are taking this medication. Keep all medical and lab appointments. Consult your doctor for more details.

Check your blood pressure regularly while taking this medication, especially when you first start this drug or when your dose is changed. Learn how to monitor your own blood pressure at home, and share the results with your doctor.

If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Use your next dose at the regular time. Do not double the dose to catch up.

Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.