Evidence supporting the use of: Vitamin C (calcium ascorbate)
For the health condition: Allergies (respiratory)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Vitamin C (calcium ascorbate) has some scientific evidence supporting its use in the context of respiratory allergies, but the evidence is limited and not robust. Vitamin C is known for its antioxidant properties and its role in immune function. Some studies suggest that vitamin C may help reduce histamine levels in the body, which could potentially alleviate allergy symptoms. For example, a few small clinical trials and observational studies have reported that vitamin C supplementation can lead to a decrease in respiratory symptoms associated with allergic rhinitis and asthma, possibly due to its anti-inflammatory and antihistamine effects. Additionally, intravenous vitamin C has been explored in some studies for its potential to reduce allergy-related inflammation and improve symptoms, though these studies are limited in size and quality.

Despite these findings, the overall quality of evidence is low. Most studies have methodological limitations such as small sample sizes, lack of blinding, or inadequate controls. Systematic reviews generally conclude that while vitamin C is safe and may have a modest benefit for certain individuals, there is insufficient high-quality evidence to recommend it as a standard treatment for respiratory allergies. Therefore, vitamin C (including as calcium ascorbate) is sometimes used as a complementary approach, but it should not replace established treatments for allergies.

More about Vitamin C (calcium ascorbate)
More about Allergies (respiratory)

Products containing Vitamin C (calcium ascorbate)

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