Lasix is the brand formulation of furosemide. The onset of action of this medication is 30 to 60 minutes and has a biological half-life of 100 minutes.

Medical Uses

Lasix is used to treat the condition edema also known as fluid retention. This condition occurs due to heart related diseases, kidney or liver problems.

Lasix helps the patient by increasing the urination hence prevents in absorption of excessive salts in the body. When excessive fluid is reduced, certain symptoms like swelling in the arms, abdomen or legs as well as shortness of breath can be reduced. The medication is also used in treating high blood pressure or hypertension. When the blood pressure in the patient is lowered, it could prevent heart attacks, strokes as well as kidney disorders.

Dosing Guide

Lasix is available as a compressed tablet as well as liquid form. When a patient is prescribed with a tablet, it can be taken by mouth with or without food. It is taken one or two times in a day. The intake of medication can be done few hours before going to sleep; this will help a person to avoid urinating at night. The exact dosage should be taken without increasing or decreasing it.

In case a patient is prescribed with a liquid form of Lasix, it should be taken after evaluating with a dose-measuring spoon. Do not use the household spoon and buy it from the pharmacist if it is not available with you. There must be utmost care whilst measuring this syrup to avoid medication overdose. Whatever variant the doctor is prescribed, take according to the prescribed dosage strength. For adults the dosage strength would be based on the severity of the problem, response to the treatment, tolerance as well as age. In case of children, the dosage strength would be based on their weight. So tell the physician if there is any alteration in the weight.

Side Effects

Just like other medications, certain side effects may be triggered whilst taking Lasix. Cough, back pain, headache, unusual bleeding, tightness in the chest, painful glands, weakness, wheezing are some of the rare symptoms of the medication. There are certain common ill effects like nose bleeding, black or tarry stools, constipation, indigestion, weight loss, confusion and vomiting. If the person who is taking this medication experiences any of the symptoms, it is essential to get advice from the medico as soon as possible.

Interaction with other medications

There are high risks of medication interactions and individuals must be cautious before commencing the treatment. Some of the medications that may be possible to interact with Lasix are Cephalexin, Ethacrynic acid, Valsartan, and Chloral hydrate.


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