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Amiloride is used with other "water pills"/diuretics (such as furosemide, thiazide diuretics like hydrochlorothiazide) to treat high blood pressure (hypertension), heart failure, or extra fluid in the body (edema). Amiloride also helps to treat or prevent low blood potassium levels caused by the other diuretics. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems.
Amiloride is called a "water pill" (diuretic) and causes your body to get rid of extra salt and water while also preventing the kidneys from getting rid of too much potassium.
Take this medication by mouth with food, usually once daily or as directed by your doctor.
If you take this drug too close to bedtime, you may need to wake up to urinate. Therefore, it is best to take this medication at least 4 hours before your bedtime. If you have any questions about how and when to take this medication, ask your doctor or pharmacist.
The dosage is based on your medical condition and response to treatment.
Use this medication regularly in order to get the most benefit from it. To help you remember, take it at the same time each day. It is important to continue taking this medication even if you feel well. Most people with high blood pressure do not feel sick.
Tell your doctor if your condition does not improve or if it worsens (such as your blood pressure readings remain high or increase).
See also Warning section.
Headache, dizziness, nausea, vomiting, loss of appetite, stomach/abdominal pain, gas, or diarrhea may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she 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.
When given with other diuretics, amiloride may cause a loss of too much body water (dehydration) and salt/minerals. Tell your doctor right away if you have any of these unlikely but serious symptoms of dehydration or mineral loss: very dry mouth, extreme thirst, muscle cramps, weakness, fast heartbeat, severe dizziness, confusion, fainting, seizures.
Tell your doctor right away if any of these rare but serious side effects occur: signs of kidney problems (such as change in the amount of urine), yellowing eyes/skin, dark urine, persistent nausea/vomiting.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
See Also Warning section.
Before taking amiloride, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. 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: untreated salt/mineral imbalance (such as high potassium, low sodium level), kidney disease, liver disease, diabetes, loss of too much body water (dehydration).
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.
Significant loss of body water from too much sweating, vomiting, or diarrhea can also lower your blood pressure and worsen dizziness. Drink plenty of fluids to prevent these effects and dehydration. If you are on restricted fluid intake, consult your doctor for further instructions. Contact your doctor if you are unable to drink fluids or if you have persistent diarrhea/vomiting.
This drug may increase the potassium levels in your blood. Limit foods high in potassium such as bananas and orange juice. Consult your doctor or pharmacist before using any products containing potassium (such as potassium supplements, salt substitutes).
During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.
It is unknown if this drug passes into breast milk. Discuss the risks and benefits with your doctor before breast-feeding.
Store at room temperature between 59-86 degrees F (15-30 degrees C) away from light and moisture. Protect from freezing. Do not store in the bathroom. Keep all medicines 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 for more details about how to safely discard your product.
See also Precautions section.
The effects of some drugs can change if you take other drugs or herbal products at the same time. This can increase your risk for serious side effects or may cause your medications not to work correctly. These drug interactions are possible, but do not always occur. Your doctor or pharmacist can often prevent or manage interactions by changing how you use your medications or by close monitoring.
To help your doctor and pharmacist give you the best care, be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products) before starting treatment with this product. While using this product, do not start, stop, or change the dosage of any other medicines you are using without your doctor's approval.
Some products that may interact with this drug include: lithium, sodium phosphate products, other products that may increase potassium levels (such as eplerenone, tacrolimus, cyclosporine, birth control pills containing drospirenone, potassium-sparing diuretics like spironolactone/triamterene, ACE inhibitors like benazepril/captopril, angiotensin receptor antagonists like losartan/valsartan).
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).
This medication may interfere with certain laboratory tests (including glucose tolerance testing), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.
This document does not contain all possible drug interactions. Keep a list of all the products you use. Share this list with your doctor and pharmacist to lessen your risk for serious medication problems.
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: severe dizziness, fainting, slow/irregular heartbeat.
If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
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.
Laboratory and/or medical tests (including kidney function, blood mineral levels such as potassium) should be performed from time to time to monitor your progress or check for side effects. 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.