What Causes Blood In Urine While On Furosemide?

Posted on Sun, 29 Oct 2017

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Sun, 29 Oct 2017 Answered on

Wed, 29 Nov 2017 Last reviewed on

Question : I am an 83 year old male. my DR has me on 20mg of furosemide once a day. today I started passing blood and it looks like 100% blood. In the past two hours I have passed about one half pint of blood. Could the medication cause this

Answered by Dr. Bonnie Berger-Durnbaugh (16 minutes later)

Brief Answer:
Go to the ER now.

Detailed Answer:
Hello and welcome,

It's possible this is related to the furosemide although it is a rare side effect.

I want you to go to the ER right now please. It is not normal to pass XXXXXXX blood in the urine under any circumstances and you are losing too much blood. Please go to the ER right now.

I would be happy to answer any further questions you might have but I don't want you to delay getting evaluated. Go to the ER and if you want to ask me questions then, please go ahead.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar