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Furosemide Injection

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Dehydration and an electrolyte imbalance can be brought on by furosemide. Call your doctor right away if you have any of the following symptoms: reduced urination, dry mouth, thirst, a pounding heartbeat, nausea, vomiting, weakness, drowsiness, confusion, muscle discomfort, or cramping.

Why is this medication prescribed?

Furosemide injection is used to treat edema (excess fluid retained in body tissues) brought on by a variety of medical conditions, such as heart failure, pulmonary edema (excess fluid in the lungs), kidney, and liver disease, in adults and children who are unable to take oral medications or in emergency situations. Adults who are unable to take oral drugs can also be treated for edema brought on by specific types of chronic heart failure with furosemide injection (Furoscix). Diuretics, also known as “water pills,” are a class of drugs that includes furosemide. It functions by causing the kidneys to excrete salt and water from the body through the urine.

How should this medicine be used?

A doctor or nurse can provide furosemide injection intravenously (into a vein) or intramuscularly (into a muscle) in a medical facility or office. A subcutaneous (just under the skin) injection of furosemide injection (Furoscix) is administered at home using an on-body delivery system (on-body injector with a prefilled cartridge).

Furosemide injection is often administered as a single dosage, though it may also be administered once or twice a day to treat edema brought on by a variety of medical conditions. Your illness and how you react to treatment will determine your dose regimen.

Furosemide injection (Furoscix) is often administered in an on-body delivery system to be injected subcutaneously (just under the skin) during a 5-hour period to treat individuals with edema brought on by specific forms of heart failure. You will need to restrict your movement and avoid bending during this period. About an hour after the subcutaneous injection starts, you should start to feel a greater urge to urinate. Make sure you have access to a bathroom for up to 8 hours after starting the subcutaneous injection with the on-body injector because this could linger that long. Follow the instructions for subcutaneous injection of furosemide exactly. Never use this drug in larger or less amounts, or for longer than your doctor has directed.

Your physician may determine that the subcutaneous injections can be administered at home by you or a caregiver using the on-body delivery device. You will be shown how to prepare and administer the injections at home by your healthcare practitioner. For a copy of the manufacturer’s directions for use information for the patient, ask your pharmacist or doctor. If you have any concerns regarding how to administer the drug through injection, be sure to see your physician or pharmacist.

Make that the cartridge’s printed expiration date is still current by checking the cartridge. Examine the cartridge’s liquid in detail. It shouldn’t be muddy or discolored, and the liquid should be clear to slightly yellow. Avoid dropping or letting the on-body injector or cartridge become wet. Do not bathe, swim, shower, or do any other activity that will cause you to perspire after applying the on-body injector. Do not inject the drug if the container or cartridge are defective; instead, contact your pharmacist.

The abdomen (stomach), on either side of your navel, on a flat, hairless area above the belt line and below the rib cage, is where you should attach the on-body injector. Every time you use the on-body injector, pick a different location. The area right beneath a belt or waistband should not get the on-body injector application. Make sure the skin is clear, dry, and healthy where you intend to inject fluid onto your body. Applying the on-body injector to red, inflamed, or damaged skin is not advised. Additionally, avoid using the body injector on skin that has recently received treatment with creams, lotions, oils, or other skin care products. Use a container that won’t puncture to dispose of used on-body delivery methods. Consult your physician or pharmacist for instructions on how to get rid of the puncture-resistant container.

For a copy of the manufacturer’s information for the patient, ask your pharmacist or doctor.

Other uses for this medicine

Ask your doctor or pharmacist for more details if you believe this drug should be used for something else.

What special precautions should I follow?

Before using furosemide injection,

  • If you have any allergies, including to sulfonamide medications, other drugs, or any of the chemicals in furosemide injection, notify your doctor and pharmacist right away. Tell your doctor if you are allergic to any adhesives before using the furosemide on-body injector. For a list of the ingredients, ask your pharmacist or look in the patient information.
  • Inform your doctor and pharmacist about all prescription and over-the-counter drugs, vitamins, dietary supplements, and herbal products that you are now taking or intend to use. Your physician might need to adjust the dosage of your drugs or keep a close eye on you for side effects.
  • Inform your doctor if you suffer from kidney illness, liver cirrhosis (a condition that causes liver tissue to scar), or ascites (a buildup of fluid in the abdomen). Your physician might advise against using furosemide injection.
  • If you have or have ever had a condition that prevents your bladder from emptying completely, an electrolyte imbalance in your blood, such as low potassium levels, hypertension, diabetes, gout, systemic lupus erythematosus (SLE; a chronic inflammatory condition), or liver disease, let your doctor know.
  • Inform your doctor if you are expecting, intend to get pregnant, or are nursing a baby. Call your doctor if you become pregnant while taking furosemide injection.
  • Inform the surgeon that you are receiving furosemide injection if you are having surgery.
  • Make a plan to limit your time spent in the sun and to use sunscreen, sunglasses, and protective clothes. Your skin could become sun-sensitive if you use furosemide.
  • When you get up too rapidly from a laying position while taking furosemide, you should be aware that these side effects could occur. When you first begin using furosemide, this is more typical. To avoid this issue, slowly get out of bed and sit up after a few minutes of resting your feet on the floor. Alcohol can intensify these negative consequences.
  • Whether you plan to undergo a magnetic resonance imaging exam (MRI), a medical procedure that utilizes strong magnets to take images of the inside of the body, let your doctor know whether you are using the furosemide on-body injector.

What special dietary instructions should I follow?

Follow these guidelines carefully if your doctor advises you to eat or drink more potassium-rich foods (such as bananas, prunes, raisins, and orange juice) or to follow a low-salt or low-sodium diet.

What side effects can this medication cause?

Side effects are possible with furosemide. If any of these symptoms are severe or do not go away, let your doctor know right once:

  • Excessive urination
  • Fuzzy vision
  • Headache
  • Constipation
  • Diarrhea
  • Painful injection location

Some adverse effects can be very harmful. Call your doctor right away if you have any of these signs or any of those in the IMPORTANT WARNING section:

  • Hearing ringing
  • Decline in hearing
  • Chronic stomach ache that occasionally radiates to the back
  • Irritation, hives, rash, or breathing or swallowing issues
  • Flaking or blistering skin
  • Eyes or skin that have a yellow tint
  • Stools with a light color
  • Dark feces
  • Stomach ache in the top right corner

Other negative effects of furosemide may occur. If you experience any strange issues while taking this medicine, contact your doctor right away.

You or your doctor can submit a report to the Food and Drug Administration’s (FDA) MedWatch Adverse Event Reporting program online at or by phone at 1-800-332-1088 if you have a serious side event.

What should I know about storage and disposal of this medication?

Keep the on-body delivery device securely closed in the carton it arrived in and out of kids’ reach. Protect it from light and keep it at normal temperature. Avoid freezing or refrigeration.

As many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and are simple for young children to open, it is crucial to keep all medications out of sight and out of reach of children. Always lock safety caps and promptly stash medication up and away from young children where it is out of their sight and reach to prevent poisoning.

To make sure that pets, kids, and other people cannot take leftover pharmaceuticals, they should be disposed of in a specific manner. You shouldn’t flush this medication down the toilet, though. The best option to get rid of your medication is instead through a medication take-back program. To find out about take-back initiatives in your neighborhood, speak with your pharmacist or get in touch with your city’s waste/recycling department. If you do not have access to a take-back program, you can find more information at the FDA’s Safe Disposal of Medicines website (

In case of emergency/overdose

Call the poison control hotline at 1-800-222-1222 in the event of an overdose. Additionally, information can be found online at Call 911 right once if the person has collapsed, experienced a seizure, is having difficulty breathing, or cannot be roused.

Overdose symptoms could include:

  • Severe thirst
  • Mouth ache
  • Dizziness
  • Confusion
  • Extreme fatigue
  • Vomiting
  • Stomach pain

What other information should I know?

Keep all of your appointments with your physician and the lab. To monitor your body’s reaction to furosemide, your doctor can request specific lab tests.

You should keep a written record of every medication you take, including any over-the-counter (OTC) items, prescription drugs, and dietary supplements like vitamins and minerals. This list should be brought with you whenever you see a doctor or are admitted to the hospital. You should always have this information with you in case of emergencies.

Brand names

  • Furoscix®
  • Lasix®
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