Generic Name: Furosemide Tablets (fyoor OH se mide)
Brand Name: Lasix
Medically reviewed by Drugs.com. Last updated on Mar 20, 2019.
- This medicine is a strong fluid-lowering drug (diuretic). Sometimes too much water and major elements (potassium) in the blood may be lost. This can lead to serious health problems. Your doctor will follow you closely to change the dose to match your body's needs.
Uses of Lasix:
- It is used to get rid of extra fluid.
- It is used to treat high blood pressure.
What do I need to tell my doctor BEFORE I take Lasix?
- If you have an allergy to furosemide or any other part of Lasix (furosemide tablets).
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If you are not able to pass urine.
- If you are taking any of these drugs: Chloral hydrate, ethacrynic acid, or lithium.
This is not a list of all drugs or health problems that interact with Lasix (furosemide tablets).
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Lasix (furosemide tablets) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
What are some things I need to know or do while I take Lasix?
- Tell all of your health care providers that you take Lasix (furosemide tablets). This includes your doctors, nurses, pharmacists, and dentists.
- Avoid driving and doing other tasks or actions that call for you to be alert until you see how Lasix (furosemide tablets) affects you.
- To lower the chance of feeling dizzy or passing out, rise slowly if you have been sitting or lying down. Be careful going up and down stairs.
- If you have high blood sugar (diabetes), you will need to watch your blood sugar closely.
- If you are on a low-salt or salt-free diet, talk with your doctor.
- If you are taking Lasix (furosemide tablets) and have high blood pressure, talk with your doctor before using OTC products that may raise blood pressure. These include cough or cold drugs, diet pills, stimulants, ibuprofen or like products, and some natural products or aids.
- Have your blood pressure checked often. Talk with your doctor.
- Have blood work checked as you have been told by the doctor. Talk with the doctor.
- High cholesterol has happened with Lasix (furosemide tablets). If you have questions, talk with the doctor.
- You may need extra potassium. Talk with your doctor.
- Talk with your doctor before you drink alcohol or use other drugs and natural products that slow your actions.
- This medicine may make you sunburn more easily. Use care if you will be in the sun. Tell your doctor if you sunburn easily while taking this drug.
- Watch for gout attacks.
- If you have lupus, Lasix (furosemide tablets) can make your lupus active or get worse. Tell your doctor right away if you get any new or worse signs.
- If you are 65 or older, use Lasix (furosemide tablets) with care. You could have more side effects.
- Use with care in children. Talk with the doctor.
- Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using Lasix (furosemide tablets) while you are pregnant.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
How is this medicine (Lasix) best taken?
Use Lasix (furosemide tablets) as ordered by your doctor. Read all information given to you. Follow all instructions closely.
- This medicine may cause you to pass urine more often. To keep from having sleep problems, try to take before 6 pm.
- To gain the most benefit, do not miss doses.
- Do not take sucralfate within 2 hours before or after taking Lasix (furosemide tablets).
- Do not take if product changes color.
What do I do if I miss a dose?
- Take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
What are some side effects that I need to call my doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of fluid and electrolyte problems like mood changes, confusion, muscle pain or weakness, a heartbeat that does not feel normal, very bad dizziness or passing out, fast heartbeat, more thirst, seizures, feeling very tired or weak, not hungry, unable to pass urine or change in the amount of urine produced, dry mouth, dry eyes, or very bad upset stomach or throwing up.
- Signs of high blood sugar like confusion, feeling sleepy, more thirst, more hungry, passing urine more often, flushing, fast breathing, or breath that smells like fruit.
- Signs of liver problems like dark urine, feeling tired, not hungry, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
- Signs of kidney problems like unable to pass urine, change in how much urine is passed, blood in the urine, or a big weight gain.
- Signs of a pancreas problem (pancreatitis) like very bad stomach pain, very bad back pain, or very bad upset stomach or throwing up.
- Very bad dizziness or passing out.
- A burning, numbness, or tingling feeling that is not normal.
- Blurred eyesight.
- Hearing problems like lowered hearing and loss of hearing have happened with Lasix (furosemide tablets). Sometimes this may go away but sometimes it may not. Call your doctor right away if you have ringing in the ears or any change in your hearing.
- Low blood cell counts have happened with Lasix (furosemide tablets). If blood cell counts get very low, this can lead to bleeding problems, infections, or anemia. Call your doctor right away if you have signs of infection like fever, chills, or sore throat; any unexplained bruising or bleeding; or if you feel very tired or weak.
What are some other side effects of Lasix?
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
- Upset stomach or throwing up.
- Not hungry.
- Stomach cramps.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.
If OVERDOSE is suspected:
If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
How do I store and/or throw out Lasix?
- Store at room temperature.
- Protect from light.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
Consumer information use
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else's drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
- Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about Lasix (furosemide tablets), please talk with your doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
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More about Lasix (furosemide)
- Side Effects
- During Pregnancy or Breastfeeding
- Dosage Information
- Patient Tips
- Drug Images
- Drug Interactions
- Compare Alternatives
- Support Group
- Pricing & Coupons
- En Español
- 39 Reviews
- Generic Availability
- Drug class: loop diuretics
- FDA Alerts (1)