water pills

What is Furosemide?

It is a loop diuretic, often referred to as a fluid pill or water pill. It acts in the kidney on the Loop of Henle. It prevents the kidney from reabsorbing sodium, potassium and chloride. The body then has to use water to flush out the sodium, potassium and chloride causing a reduction in the amount of water retained in the body.

Uses for Furosemide

It is used to remove excess fluid in the body or a condition called edema. Also, it may be use to treat high blood pressure.

Dosage of Furosemide

The dose will vary depending on the amount of fluid your healthcare provider wants to remove. Dosage generally starts at 20 mg a day and may go up to 80 mg. In rare cases, the dosage may go as high as 600mg a day.

For blood pressure, furosemide is often given twice a day. Doses range form 10 mg twice a day to 40 mg twice a day.

This medication does work best on an empty stomach, but may be taken with food if stomach upset occurs.

Side effects of Furosemide

Common adverse reactions can include: frequent urination, dizziness, nausea and vomiting, muscle cramps, low potassium, low magnesium, low blood pressure, reduced appetite, diarrhea, rash, ringing in the ears, gout, sensitivity to sunlight and others.

Rare and serious side effects can include: very low potassium, hearing impairment, blood disorders, severe allergic reaction, blurred vision, kidney toxicity, severe skin rash, and others

More about Furosemide

It is usually best taken in the morning as frequent urination will occur. Potassium supplementation or a diet high in potassium will most likely be recommended by your doctor, your potassium levels will be monitored. Avoid alcohol. Avoid NSAID pain relievers like ibuprofen and naproxen. Monitoring your weight may be useful to determine levels of excess fluid in your body.

Sunscreen is recommended as you may burn easier than normal with this medication. Watch for dizziness and low blood pressure. If you are diabetic, monitor your blood sugars as this medication may affect glucose levels in the blood.

Always contact your doctor or pharmacist if you feel you may be having side effects of interactions. Check with you healthcare provider before starting or stopping any medication prescription or over-the-counter. Also, check if vitamins or supplements are ok to use with your medications.



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The pharmaceutical information on this site is provided as an information resource only, and is not to be used or relied on for any diagnostic or treatment purposes. This information is not intended to be patient education and should not be used as a substitute for professional diagnosis and treatment.
5 comments… add one
  • Nice information

  • Lynn, are there any other markings on the tablet?

  • Lynn Cobena Link

    I’m trying to confirm a prescription of furosemide tablets that I purchased.They are small,white tablets with an imprint of M on the face. When I asked the pharmasist, he suggested they may not be. They were not his brand. I should disregard them and purchase his brand, which I did, because I want to be sure she gets the right medicine.

  • A Pharmacist or chemist may be able to make this medicine in a liquid form.


    sir i m from Kolkata (India) Doctor Prescribe Furosemide Drop for my 8 Month Baby but hear not available this Medicine Sir what i do please give me a suggestion

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