Hctz Oral : Uses, Side Effects, Interactions


COMMON BRAND(S): Microzide

GENERIC NAME(S): Hydrochlorothiazide


Hydrochlorothiazide or Hctz is used to treat high blood pressure. Reducing hypertension helps in preventing stroke, heart attack and kidney problems. Hydrochlorothiazide or Hctz is related to a class of drugs called diuretic / “water tablets”. It works to make you more urine. It helps your body get rid of excess salt and water.

This drug reduces excess fluid (edema) in the body due to conditions like heart failure, liver disease or kidney disease. This can reduce the symptoms of breathing or swelling in your ankles or feet.

How to use Hctz

Take Hctz guided by your doctor, usually with or without food once in the morning. If you take this medicine close to the time of sleep, you may have to wake up to urinate. It is best to take this medicine at least 4 hours before your sleep.

Dosage is based on your medical condition and treatment response.

Use Htcz regularly to get the most benefit. To help you remember, take it at the same time every day. Keep taking this medication even if you feel OK. Most people with high blood pressure do not feel sick.

If you also take some medicines to reduce your cholesterol (bile acid-binding resins such as cholestyramine or colestipol), then take Hctz at least 4 hours before these medications or at least 4 to 6 hours.

Tell your doctor if your condition is not better or if it gets worse (for example, your blood pressure reading is high or increased).

Side Effects

An abdomen may cause irritation, dizziness or headache because your body gets adjusted with medication. If any of these effects gets worse or worse, then tell your doctor or pharmacist immediately.

To reduce the risk of dizziness and lighthouse, slowly rise while sitting or lying down from the position of lying.

Remember that your doctor has prescribed this drug because he or she has decided that the benefit is higher than the risk of side effects. Many people using this drug do not have serious side effects.

Tell your doctor immediately if you have a serious side effect, including: decrease in vision, pain in the eye.

Due to Hctz, excessive body water (dehydration) and loss of salt / minerals can occur. Tell your doctor immediately if you have any symptoms of dehydration or mineral loss, including: excessive thirst, very dry mouth, muscle spasms / weakness, slow / sharp / irregular heartbeat, confusion, loss of urine

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

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

In America – Call your doctor for medical advice about side effects. You can notify the FDA of side effects on 1-800-FDA-1088 or www.fda.gov/medwatch.

In Canada – Call your doctor for medical advice about side effects. You can report the health effects of Canada on 1-866-234-2345.


Before taking hydrochlorothiazide or Hctz, tell your doctor or pharmacist whether you are allergic to it; Or if you have any other allergens. This product may have passive elements (such as sulfites  found in some brands), which may cause allergies or other problems. Talk to your pharmacist for more details.

Before using hctz, tell your doctor or pharmacist your medical history, in particular: diabetes, arthritis, kidney disease, liver disease, lupus, skin cancer.

This medication can make you dizzy. Alcohol or marijuana (cannabis) can make you feel more dizzy. Unless you can safely do it, do not drive, use machinery, or do anything that requires caution. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).

Severe sweating, diarrhea, or vomiting can increase the risk for serious damage to body water (dehydration). Give long-term diarrhea or vomiting report to your doctor. To prevent dehydration, drink lots of fluids unless your doctor directs you otherwise.

If you have diabetes, hctz can affect your blood glucose. Regularly check blood sugar guided by your doctor. Your doctor may need to adjust your diabetes medication, exercise program or diet.

Hctz can reduce your potassium level. Ask your doctor about using high food items (such as banana, orange juice) or potassium salt substitute in potassium. A potassium supplement can be determined by your doctor.

This medicine can make you more sensitive to the sun. It can also increase your risk for skin cancer, especially if you take it for a long time. Keep your time limited in the sun. Avoid Tanning Booths and sunlamps. Use sunscreen on the outside and wear protective clothing. Tell your doctor immediately if you have sunburn, have blisters / redness in the skin, or notice new or changed moles / skin lesions.

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

Older adults may be more sensitive to the effects of this drug, especially dizziness.

During pregnancy, Hctz should be used only when it is clearly necessary. Discuss the risks and benefits with your doctor.

This medicine passes in breast milk, but there is no possibility of harm to a nursing infant. Consult your doctor before breastfeeding.

Over Dose

If someone is treated and has serious symptoms like having trouble going out or breathing, call 911. Otherwise, call the Poison Control Center immediately. US residents can call their local venom control center at 1-800-222-1222. Canadians can call a provincial poison control center. Symptoms of overdose may include: severe dizziness, weakness, unconsciousness


Do not share this medication with others.

Changes in lifestyle that can help this drug work better include exercising, smoking and eating low cholesterol / low fat diet. Consult your doctor for more details.

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

Also Read:  Lisinopril Oral : Uses, Side Effects, Interactions

While taking this medicine, check your blood pressure and pulse (heart rate) regularly. Learn how to check your own blood pressure and pulse at home, and share the results with your doctor.

Missed Dose

If you miss a dose, then as soon as you remember, take it. If it is near the next dose time, then leave the thesis dose. Take your next dose at regular times. 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.

Until instructed not to do so, do not flush the medicines in the toilet and do not drain in the drain. When this period expires or does not need it, then properly release this product. Consult your pharmacist or local waste disposal company.

Disclaimer: DrLinex has made every effort to ensure that all information is factually accurate, comprehensive and up-to-date. However, this article should not be used as a licensed health care professional’s choice of knowledge and expertise. You should always consult your doctor or other health care professional before taking any medication. The information given here is subject to change and it has not been used to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions or adverse effects. The lack of warning or other information for any drug does not indicate that the combination of medicine or medication is safe, effective or appropriate for all patients or all specific uses.

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