/tiles/non-collection/p/part2_08_foraker_joseph_lc.xml Image courtesy of the Library of Congress Joseph Foraker of Ohio, chairman of the Senate Committee on Pacific Islands and Puerto Rico, was a Civil War veteran.
1 You cannot donate within 72 hours of your surgery. 2  Acetaminophen (Tylenol), aspirin and alcohol should be avoided for 48 hours before your donation. 3  Your hemoglobin/hematocrit will be checked and must be at a satisfactory level before donating.
A American Red Cross answered. If you have low blood pressure, you may donate blood as long as you feel well at the time of donation. If your blood pressure normally runs low, it may be more difficult for your body to adjust to the volume loss following donation, especially if you are dehydrated. Drinking extra water before and after donation is important.