12 doctors weighed in:
Is it normal to be feeling a little lightheaded and nauseous less than 24 hours after giving blood?
12 doctors weighed in

Dr. Kenneth Cheng
Family Medicine
10 doctors agree
In brief: Yes
As a long time blood donor of over 2 gallons, some lightheadedness and nausea can be common with blood donations.
This is a small inconvenience that you have endured for the greater good of your community. Be sure to drink lots of fluids and don't skip meals after donating. Any symptoms beyond 24 hours are not likely to be caused by the donation; see your doctor if you notice symptoms >24hrs.

In brief: Yes
As a long time blood donor of over 2 gallons, some lightheadedness and nausea can be common with blood donations.
This is a small inconvenience that you have endured for the greater good of your community. Be sure to drink lots of fluids and don't skip meals after donating. Any symptoms beyond 24 hours are not likely to be caused by the donation; see your doctor if you notice symptoms >24hrs.
Dr. Kenneth Cheng
Dr. Kenneth Cheng
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Dr. Muhammad-ali Zaydan
Internal Medicine - Hematology & Oncology
In brief: Dizziness
Yes possible, it can happen immediately after donating blood, drink plenty of fluids and if dizziness does not improve makr sure to checl with your doctor.

In brief: Dizziness
Yes possible, it can happen immediately after donating blood, drink plenty of fluids and if dizziness does not improve makr sure to checl with your doctor.
Dr. Muhammad-ali Zaydan
Dr. Muhammad-ali Zaydan
Thank
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