Furosemide (By mouth)
Cardiovascular Agent (About this – PubMed Health)
Uses of This Medicine
Furosemide belongs to a group of medicines called loop diuretics (also known as water pills). Furosemide is given to help treat fluid retention (edema) and swelling that is caused by congestive heart failure, liver disease, kidney disease, or other medical conditions. It works by acting on the kidneys to increase the flow of urine.
Furosemide is also 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. High blood pressure may also increase the risk of heart attacks. These problems may be less likely to occur if blood pressure is controlled.
This medicine is available only with your doctor’s prescription.
Other uses (PubMed Health)
How To Use
Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.
Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.
You may take this medicine with food if it upsets your stomach.
Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.
Drugs and Foods to Avoid
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
Some medicines can affect how furosemide works. Tell your doctor if you are also using cisplatin, cyclosporine, digoxin, ethacrynic acid, indomethacin, licorice, lithium, mecamylamine, methotrexate, or phenytoin.
Also tell your doctor if you are also using an adrenocorticotropic hormone (ACTH), a laxative, medicine to treat an infection, other medicine for high blood pressure, a steroid medicine (such as hydrocortisone, methylprednisolone, prednisone, prednisolone, dexamethasone), or an NSAID pain or arthritis medicine (such as aspirin, diclofenac, ibuprofen, naproxen).
If you also take sucralfate, allow at least 2 hours between the time you take furosemide and the time you take sucralfate.
When Not To Use
This medicine is not right for everyone. Do not use it if you had an allergic reaction to furosemide or if you are not able to urinate.
Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, anemia, diabetes, gout, hearing problems, low blood pressure, lupus, an enlarged prostate, trouble urinating, or an allergy to sulfa drugs. Tell your doctor if you drink alcohol.
This medicine may cause the following problems:Hypokalemia (low potassium in your blood) Changes in blood sugar levels Hearing problems
Make sure any doctor or dentist who treats you knows that you are using this medicine.
This medicine could lower your blood pressure too much, especially when you first use it or if you are dehydrated. Stand or sit up slowly if you feel lightheaded or dizzy.
Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
Keep all medicine out of the reach of children. Never share your medicine with anyone.
Possible side effects
Summary More details
Call your doctor right away if you notice any of these side effects:
Chest pain, shortness of breath
Confusion, weakness, muscle twitching
Sudden and severe stomach pain, nausea, vomiting, fever, lightheadedness
Lightheadedness, dizziness, fainting
Unusual bleeding or bruising
Yellow skin or eyes
If you notice these less serious side effects, talk with your doctor:
If you notice other side effects that you think are caused by this medicine, tell your doctor.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
More side effects of this drug
Brand names include
Active-Medicated Specimen Collection Kit, Furocot, Lasix, RX-Specimen Collection Kit, Urinx Medicated Specimen Collection Package
There may be other brand names for this medicine.