People may feel fatigued or experience some dizziness, lightheadedness, or nausea after donating blood. This is because of the temporary lowering of blood pressure. If a person feels faint, they can sit down and put their head between the knees so that it is lower than the heart. Lying down with the legs elevated can also help to prevent falling.
If symptoms do not improve, people can contact their doctor. To replenish fluid in the body, people need to drink water and other liquids before and after donating blood. According to the American Red Cross, people can drink an additional 16 ounces oz of water before they donate blood, and an extra 8 oz of fluids afterward.
People can continue to drink extra fluids for the following 3 days to replenish lost fluids in the body. Healthful nutrition and eating iron-rich foods can help to replenish iron stores.
Combining iron-rich foods with vitamin C helps the body absorb iron. Examples of vitamin C-rich foods include:. Regular donors may also find taking a multivitamin that contains iron helps to replenish iron stores. People can take care to rest and avoid heavy lifting, strenuous exercise, or activity for the following 12 hours after donation. Resting helps the body to recover while it adjusts to the loss of blood.
People will rest at the donation center after they have given blood. This allows them to receive help straight away if they have any adverse side effects.
The center may provide a snack and drink for people to have afterward. Once people have rested and have no adverse symptoms, they can leave. If someone experiences any long lasting or severe symptoms after giving blood, they can contact their doctor. Leave your bandage on for at least four hours. If you see any new bleeding, apply pressure for minutes and replace the bandage for an additional four hours.
Eat and drink something before leaving. Drink extra fluids for the next three days to help replace the fluid volume lost with your donation. It is especially important to drink extra fluids in the first 4 hours following a donation. Avoid heavy lifting and strenuous exercise for twelve hours. This will help prevent bruising, help the needle site heal, and allow your body to readjust to the blood loss.
A Singapore Government Agency Website. Browse Home Blood donation. Blood donation process Overview. During your donation. Post-donation care To help you stay well after you have given blood, we recommend the following: Keep the bandage on for at least 4 hours after donation. Have something to eat and drink at the refreshment area before leaving. Avoid drinking alcoholic drinks until the next day. Eat food rich in iron and take iron supplements. To reduce the risk of fainting, we advise that you: Rest at least 20 minutes at the blood bank after donation.
Drink plenty of water or non-alcoholic drinks after donation. Do not smoke for at least an hour after donation. Avoid standing for long periods and strenuous exercise until the next day. Got vaccinated and wish to donate blood? Here's what you must know. Changes you can make to manage high blood pressure. How can we help you? Menu Buy Buy. Cyber Insurance E Secure Insurance. Workshop Claim Intimation. Claim Forms.
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