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Do not use this medication if you are allergic to hydrochlorothiazide, or if you are unable to urinate.
Before using hydrochlorothiazide, tell your doctor if you have:
- kidney disease;
- liver disease;
- asthma or allergies;
- diabetes; or
- an allergy to sulfa drugs.
If you have any of these conditions, you may need a dose adjustment or special tests to safely take hydrochlorothiazide.
FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
Hydrochlorothiazide can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
Avoid drinking alcohol, which can increase some of the side effects of hydrochlorothiazide.
Avoid using other medicines that make you light-headed (such as cold medicine, pain medication, muscle relaxers, and medicine for seizures, depression or anxiety). They can add to the side effects of hydrochlorothiazide. Tell your doctor if you regularly use any of these medicines, or any other blood pressure medications.
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.
Seek emergency medical attention if you think you have used too much of this medicine. Overdose symptoms may include nausea, weakness, dizziness, dry mouth, thirst, and muscle pain or weakness.
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose.
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.
Stop using this medication and call your doctor at once if you have a serious side effect such as:
- dry mouth, thirst, nausea, vomiting;
- feeling weak, drowsy, restless, or light-headed;
- fast or uneven heartbeat;
- muscle pain or weakness;
- numbness or tingly feeling;
- a red, blistering, peeling skin rash; or
- nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).
Less serious side effects may include:
- mild stomach pain;
- constipation; or
- blurred vision.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Before taking this medication, tell your doctor if you are using any of the following drugs:
- digoxin (Lanoxin);
- cholestyramine (Prevalite, Questran) or colestipol (Colestid);
- steroids (prednisone and others);
- other blood pressure medications;
- NSAIDs (non-steroidal anti-inflammatory drugs) such as aspirin, ibuprofen (Motrin, Advil), diclofenac (Voltaren), indomethacin, naproxen (Aleve, Naprosyn), piroxicam (Feldene), nabumetone (Relafen), etodolac (Lodine), and others; or
- insulin or diabetes medicine taken by mouth.
This list is not complete and there may be other drugs that can interact with hydrochlorothiazide. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
Carozide, Diaqua, Esidrix, Ezide, HCTZ, Hydro Par, Loqua, Microzide, Oretic, hydrochlorothiazide, Aquazide H, and HydroDIURIL
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Copyright 1996-2004 Cerner Multum, Inc. Version 2.05. Revision date 8/23/04