Updated at: 26-08-2022 - By: Sienna Lewis

If you’re wondering how long you’ll need to rest after donating blood, consider how long it takes for your body to produce two units of red blood cells. After giving blood, it’s important to know how to get back to your regular routine as soon as possible.

Millions of people around the world rely on donated blood and blood products for their health and survival. All red blood cells include some amount of hemoglobin, a protein. Hemoglobin carries oxygen to all of the body’s cells. Oxygen is, without a doubt, crucial to human survival.

Every second, your body produces 20 million new red blood cells (RBCs) for a total of 25 trillion RBCs.

It takes about two months for your red blood cells to replenish themselves after receiving a double red cell donation. Do not engage in a marathon or other physically demanding activity immediately after giving blood. Due to a decline in erythrocyte (red blood cell) count. While exercising, your red blood cells transport oxygen throughout your body.

What Is Power Blood Donation?

Donating two units of red blood cells at once is sometimes referred to as a “power blood donation.” Two units of blood must be donated at the same session. If you donate 400ml of red blood cells, that’s the equivalent of two packets of RBCs. One double red cell donation is equivalent to four whole blood donations.

For persons with a specific blood group, it is possible to donate red blood cells twice. The three blood groups are O, A-, and B-negative. All donors, whether male or female, must weigh at least 130 pounds, with women needing to weigh at least 150 pounds.

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Before donating organs, make sure you’ve had a good meal and plenty of fluids. Donations of red blood cells are given a boost by blood drawn from the arm vein. Your blood will be drawn into the machine using a mechanical arm. This device is used to separate various blood components.

After two units of red blood cells have been removed, the remaining blood components are reintroduced to the patient in the same vein, diluted with saline. Avoiding dehydration is the primary goal of this donation, which consists primarily of returning the body’s own fluids and adding salt to those fluids. Nonetheless, you should get some sleep; your severe RBC loss necessitates it.

There is a waiting period of 112 days between power blood donations.

Recovery time

In a normal blood donation, a person gives all of the blood in their body. There are red and white blood cells as well as platelets and plasma in there.

The average donor rests for 15 minutes after giving whole blood. Trustworthy. In the event that you feel tired or dizzy, an attendant may offer you some water, juice, or food.

Most people can get back to their daily lives within a few hours.

The human body produces an incredible 2 million red blood cells every single second. It may take weeks to replenish the pint of blood lost after a donation. There are currently very few victims of the blood shortage.

Eight weeks is the minimum time required between donations to allow the donor’s body to heal.

Measures To Take After Double Red Cell Donation

How long does it take for a person to feel better after receiving a double red cell donation? It takes roughly 60 days to fully heal.

However, there is a certain diet that can aid in the rapid restoration of your red blood cell count. Two double red cell donations result in a loss of roughly 200mg of iron from your body. Most volunteers go back to their regular activities within the next day.

When donating blood, it’s crucial to know how to care for yourself afterward, especially if you gave double the amount of red blood cells. Some meals may aid in the healing process after donating blood. There are some things you should not do after giving blood twice.

Tip#1. Fatigue and dizziness after donation

A common side effect of donating RBCs is feeling exhausted and lightheaded. Caused by a shortage of oxygen-carrying red blood cells, this condition is characterized by a general feeling of weakness and fatigue. If your symptoms are improving, you should up your rest and hydration intake. The use of supplements is another option.

Tip#2. Recovery from food sources

‘What should I eat after donating blood?’ is a perfectly acceptable question to ask. Foods high in iron are able to increase the iron levels in the blood. Foods high in iron include red meat, shellfish, beans, dark green leafy vegetables like spinach and peas, and iron-rich cereals, pasta, and bread.

Vitamin C aids iron absorption from the gut, therefore it’s important to raise your consumption of foods high in it. Oranges, strawberries, and other citrus fruits, as well as vegetables like broccoli, potatoes, and Brussels sprouts, are excellent sources of vitamin C, an antioxidant that helps protect cells from damage.

Vitamin B12 is also required for the production of red blood cells. Vitamin B can be found in dairy products such as yoghurt, milk, and cheese, among other things. Vitamin C is found in a variety of foods, including leafy greens, bananas, oranges, and potatoes.

Tip#3. Refrain from exercising

The formation of RBCs also relies on vitamin B12. Vitamin B can be found in dairy products such as yoghurt, milk, and cheese, among other things. Vitamin C is found in a variety of foods, including leafy greens, bananas, oranges, and potatoes.

The formation of erythrocytes, or red blood cells, also depends on vitamin B12. Vitamin B is abundant in dairy products such milk, cheese, and yoghurt. Leafy greens, bananas, oranges, and potatoes are all good sources of vitamin C.

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What to eat after blood donation

It’s important to note that blood donors experience a loss of vital nutrients after giving blood. Recuperation time can be cut down with the help of certain foods and drinks.


In certain cases, blood donors lose as much as 250 milligrams of iron from their bodies.

Restoring iron stores in the blood can be accomplished by eating iron-rich foods. These include, but are not limited to, some of the highest iron-containing foods:

  • red wine marinated beef
  • foods high in chlorophyll, like spinach
  • broccoli
  • cereals enriched with vitamins and minerals

Vitamin and mineral fortified breakfast cereals

B vitamins

Vitamins B-2, B-6, and B-9, among others, contribute to the creation of brand new RBCs. Numerous foods are rich in B vitamins, including:

  • vegetables and salad greens of many kinds
  • Dairy products
  • Products made from milk and other sources of dairy
  • cereals that have been supplemented for breakfast
  • Drinking water with a fruity twist

A B vitamin supplement may be helpful for vegetarians and vegans who have trouble getting enough B vitamins from their diet.


One way to rid the body of excess fluids is to donate blood. Recuperative beverages such as water, broth, or herbal tea can help soothe the digestive system and aid in the healing process.

The American Red Cross advises that donors drink four more glasses of fluid in the first 24 hours after giving blood.

What to avoid after blood donation

Donating blood doesn’t require a lot of time or effort, so it’s easy to fit into a busy schedule. In the short term, a stroke can impair a person’s ability to do daily tasks.

Because fewer red blood cells are present, the body is able to utilize its oxygen supply more efficiently. As a result, the donor should rest for a while after giving blood. For Instance:

  • Because fewer red blood cells are present, the body is able to utilize its oxygen supply more efficiently. As a result, the donor should rest for a while after giving blood. For Instance:
  • The reduced number of red blood cells allows the body to make better use of the oxygen it takes in. In the time immediately following a donation, it’s best to take it easy. Case in point
  • aerobic exercise

After donating blood, it’s generally a good idea to refrain from strenuous physical activity for the rest of the day.

Do not engage in any physically demanding activities for the remainder of the day after giving blood.

Donors shouldn’t drink alcohol for at least 24 hours after giving blood.

Dizziness or lightheadedness

Some people report feeling faint or dizzy after giving blood. This is because a brief drop in blood pressure results from the reduced volume of blood in the body.

Begin slowly and cautiously, avoiding anything that could put you in harm’s way because of your dizziness or disorientation.


After a blood donation is finished, a bandage will be placed over the area where the needle was inserted. They can also help the wound heal and stop bleeding by applying light pressure.

In the event that blood does not clot rapidly, rest may be required. Avoid using the bandaged arm as much as possible so that bleeding can be reduced.

If there is bleeding from a wound, you should keep your arm elevated above your head for five minutes. Once the bleeding stops, stick with Reliable Source.

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Bruising and soreness

If you notice any bleeding from the cut site, you should keep your arm elevated above your head for about five minutes. Because I don’t think the bleeding will stop any time soon.

Applying cold compresses may help alleviate any discomfort caused by the bruise. An example of an OTC pain medication is acetaminophen (Tylenol).

Donors of platelets should avoid taking aspirin for at least two days before their donation.


Some people experience more exhaustion than others after giving blood, but this is quite normal.

Anyone who has given blood recently may benefit from a nap.

An increase in fluid intake and a multivitamin/mineral supplement regimen may help combat fatigue.

When to see a doctor

Donating blood typically has few negative effects on the donor.

Seek medical help if your symptoms persist or worsen. To name a few:

  • persisting dizziness or exhaustion
  • lingering lightheadedness or fatigue
  • It is common for fever and swelling to appear early in a bacterial infection.

Certain medical disorders can increase the risk of receiving an unsafe blood transfusion. Please notify the donation center immediately if you experience any of the following conditions. It is an authoritative piece of information.

  • The severe cold or flu within four weeks following the delivery.
  • Hepatitis, tuberculosis, and malaria within three months of administration


All you have to do to help those in need is give blood.

Donors typically feel fine enough within a few hours to get back to work or school.

Some examples of post-workout recovery strategies are:

  • consumption of sufficient fluids
  • Meals rich in iron also contain vitamins C and B.
  • Stop doing strenuous things, like cardio, for a day.

Extreme reactions to giving blood are uncommon. Anyone experiencing persistent or life-threatening health issues after giving blood should consult a doctor or the donation center.

Why should you do it?

Just in case you haven’t heard, there’s always a need for blood. Hemoglobin is found in the red blood cells, platelets, plasma, and white blood cells that make up a whole blood donation. The most widely utilized blood component for transfusions is red blood cells. Subject to certain conditions, Power Red allows for the administration of two red cells at a single appointment. It’s as risk-free as giving entire blood.

How is it different?

Blood is drawn from one arm using a mechanical method during your Power Red. The machine removes two units of red blood cells from the same arm and returns the rest of the blood along with some saline.

Donate blood more efficiently and help more people. If you’re pressed for time but are otherwise eligible to donate blood (type O, A- or B-negative) through the Power Red program, you may want to consider it. By combining these methods, you can give patients more of what they want. Donating Power Red (double red cell gift) takes around 30 minutes longer than donating whole blood, and donors can give every four months on average.

Donating blood can help you feel more hydrated because all of your plasma and platelets are returned to you along with some saline.

Am I Eligible to Donate?

Donating Power Red requires you to have a hemoglobin level over a particular threshold and be at least 16 years old, in addition to the requirements for whole blood donors. Each one has a minimum requirement that varies with gender.

  • Power Red should be used by type O, A-negative, and B-negative donors.
  • You can make three separate donations per year, one every 112 days.
  • Be happy and healthy, thank you.
  • Male donors+ must be at least 5 feet, 1 inch tall and weigh at least 130 pounds in most jurisdictions, and must be at least 17 years old.
  • All female donors+ must be at least 19 years of age, be at least 5’5″ tall, and weigh at least 150 lbs in order to participate.