Furosemide (Lasix®) is a prescription drug commonly used for controlling high blood pressure. It is also licensed to treat water retention caused by kidney disease or kidney failure, cirrhosis, or congestive heart failure.
Before you start treatment with furosemide, dangers associated with this medication should be discussed with your healthcare provider. For example, tell your healthcare provider if you have liver or kidney disease, diabetes, gout, or lupus (the medicine may worsen some of these conditions). You should not take furosemide if you are allergic to any components of the drug or if you are not producing any urine.
There are also a number of potential side effects that you should be aware of before starting treatment. Some of the most common side effects that have been reported with furosemide include vision changes, sensitivity to the sun, and constipation or diarrhea. While most side effects are mild, some are potentially serious and should be reported to your healthcare provider right away, including dehydration, ringing in the ears, or fainting spells.
(Click Side Effects of Furosemide and Precautions and Warnings With Furosemide for more information about potential dangers, including a list of other side effects or complications that may occur with this drug.)