Lasix Oral

Lasix Oral Warning

This is a very potent medication. Using too much of this drug can lead to serious water and mineral loss. Therefore, it is important that you are closely monitored by your doctor. Tell your doctor immediately if you become very thirsty or confused, or develop muscle cramps/weakness while taking this medication.

See also Side Effects section.

Lasix Oral Side Effects

Dizziness, lightheadedness, headache, blurred vision, loss of appetite, stomach upset, diarrhea, or constipation may occur as your body adjusts to the medication. If any of these effects persist or worsen, notify 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.

This medication may lead to excessive loss of body water and minerals (including potassium). Tell your doctor immediately if you have any of these unlikely but serious symptoms of dehydration or mineral loss:

• muscle cramps or weakness
• confusion
• severe dizziness
• drowsiness
• unusual dry mouth or thirst
• nausea or vomiting
• fast/irregular heartbeat
• unusual decrease in the amount of urine
• fainting
• seizures

Tell your doctor immediately if any of these unlikely but serious side effects occur:

• numbness/tingling of the arms/legs
• ringing in the ears
• hearing loss

Tell your doctor immediately if any of these highly unlikely but very serious side effects occur:

• signs of infection (e.g., fever, persistent sore throat)
• easy bleeding or bruising
• stomach/abdominal pain
• persistent nausea/vomiting
• yellowing of eyes/skin

A serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include:

• rash
• itching/swelling (especially of the face/tongue/throat)
• severe dizziness
• trouble breathing

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

Call your doctor for medical advice about side effects. In the US, you may report side effects to the Food and Drug Administration (FDA) at 1-800-FDA-1088.

In Canada, you may report side effects to Health Canada at 1-866-234-2345.

Lasix Oral Medical Alert

Your condition can cause complications in a medical emergency. For enrollment information call MedicAlert at 1-800-854-1166 (USA), or 1-800-668-1507 (Canada).