How Effective Is Vitamin C In Helping With Allergies?

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How Effective Is Vitamin C In Helping With Allergies

Vitamin C has many important functions in the body but is best known for supporting the immune system. Some people wonder if vitamin C can help with allergies. Which are immune reactions to substances in the environment. This article outlines the effectiveness of vitamin C, its uses, and precautions, for treating and preventing allergies.

How Well Does Vitamin C Work In Alleviating Allergy Symptoms?

There is evidence that vitamin C, also known as ascorbic acid may help treat certain allergies. Vitamin C can act as a natural supplement which can help to block some allergies. studies have shown that it can reduce inflammation, swelling, and related symptoms that occur at the site of an allergic reaction. Allergy symptoms occur when the immune system reacts to foreign invaders called allergens. The most common allergens are pollen, animal dander, and protein found in certain foods. cells of the immune system called mast cells are activated and release histamine to fight off invaders.

Vitamin C For Allergies

Histamine can cause the following allergy symptoms:

  • runny nose 
  • sneezing.
  • Red and watery eye
  • Itching
  • Rash
  • Asthma 
  • Vomiting or Diarrhea
  • swelling 
  • Anaphylaxis
  • And rare but fatal swelling of the airways.

Vitamin C works differently than antihistamines by blocking antihistamine receptors, thereby reducing the amount of antihistamines produced. Research shows that when a person takes 2 grams of vitamin C, histamine levels can be reduced by about 38%

What allergies can vitamin C affect?

Vitamin C is thought to reduce upper respiratory symptoms caused by seasonal and environmental allergies. Common allergens include pollen, mold, dust, and animal dander. These allergens cause a histamine reaction in the nose and sinuses, causing allergic rhinitis, runny nose, sneezing, stuffy nose, and red and watery eyes. Allergens can also cause a reaction in the lungs and cause asthma.

The antihistamine effects of vitamin C may help relieve allergic rhinitis and asthma as there are high concentrations of histamine-producing mast cells in the blood vessels of the airway. There is no evidence that vitamin C can prevent or treat food allergies. If you or a family member has been diagnosed with a food allergy, it is important to avoid foods that cause a reaction. It is important for you to sometimes consult your doctor.


The most commonly used dose of vitamin C By healthcare professionals by allergic rhinitis is 2000 mg per day. The recommended daily allowance (RDA) for vitamin C is 90 mg per day for men and 75 mg per day for women. This vitamin is not stored in the body, so the risk of toxicity is minimal. Therefore, it is very safe to take high doses in supplement form. The body excretes  excess urine. Note that in some people , taking more than 2000g of vitamin C  can cause nausea, vomiting, and diarrhea. 

The gastrointestinal system limits the amount of vitamin C that is absorbed, therefore, excessive amounts can have a laxative effect. Due to the effect risk, the maximum limit that is recommended is 2000 mg per day. If you are concerned about side effects, start slowly and gradually increase your doses over a few days to see if it is well tolerated. It can also be taken in small doses several times a day. It may also help you absorb more. At 1000 mg orally only about 50 of a vitamin C supplement is absorbed.


If you have an allergy that causes severe symptoms, It is important to work with your doctor and not rely solely on vitamin C for treatment. However, you can definitely  consider using vitamin C  as a complementary therapy. Experts believe that using vitamin C supplements is safe for most people. However, be aware that it may interact with certain medication. In particular, vitamin C can reduce the effectiveness of radiation, chemotherapy, and certain cholesterol lowering drugs. Allergic reaction of excessive intake of vitamin C should be of precautionary measure, and it must be taken seriously.

In summary, vitamin C improves iron absorption. However, this can become a problem if you have a condition called hemo-chondromatosis, which causes too much iron to build up in the body. In this case, excessive intake of vitamin C can increase iron accumulation and lead to tissue damage. Its effectiveness, uses and precaution should be noted while using vitamin C to combat  

William John, the chief editor of The Cropsite, is a man with expertise in general medicine who is enthusiastic about helping people from all corners of the world through his content writing. William John covers all the things related to general medicine and is a person who can be described as a walking encyclopedia of general health. His years of knowledge of general medicine have made him a proficient person who is skilled in understanding all aspects of a person’s physical health. With this decade of experience in general medicine, William John greatly contributes to creating content such as articles and product reviews that each reader of The CropSite can depend on for being authentic and backed by research.

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