2 doctors weighed in:

How much blood loss does it take to start feeling dizzy?

2 doctors weighed in
Dr. LUIS IRIZARRY
Family Medicine
1 doctor agrees

In brief: 500 ml

About 10 % of blood volumen, even less.
Are you bleeding severely, if so go to er. If you look sick, dizzy , and unstable then you are sick and need evaluation (it does not matter if you have normal blood volumen).

In brief: 500 ml

About 10 % of blood volumen, even less.
Are you bleeding severely, if so go to er. If you look sick, dizzy , and unstable then you are sick and need evaluation (it does not matter if you have normal blood volumen).
Dr. LUIS IRIZARRY
Dr. LUIS IRIZARRY
Thank
Get help from a real doctor now
Dr. Eric Weisman
Board Certified, Neurology
32 years in practice
9M people helped
Continue
108,000 doctors available
Read more answers from doctors