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Allergies

Allergies refers to the ability of a stressor (antigen) to overstimulate the body's immune system and cause a reaction, and some supplements are able to generally suppress this response and then reduce the reaction to antigens.

Our evidence-based analysis on allergies features 28 unique references to scientific papers.

Research analysis led by .
Reviewed by
Examine.com Team
Last Updated:

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Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect allergies.
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Supplement Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-c Strong - See study
The lone study suggests that spirulina is strongly effective in controlling allergies, with the symptoms of nasal discharge, sneezing, nasal congestion and itching being time-dependently reduced. According to self-reports, more than twice as many subjects in the spirulina group reported more than a 2-fold increase in satisfaction with treatment.
grade-c Strong - See study
At least in regards to allergic rhinitus, oral ingestion of tinospora cordifolia appears to abolish symptoms in 61-83% of persons (depending on symptom) extending to nasal blockage, mucus, pruritis, and sneezing.
grade-c Notable Very High See all 4 studies
Supplementation of the seed appears to beneficially influence most symptoms associated with allergies and most causes of the allergies (rhinitus, eczema, asthma, etc.), with the magnitude being somewhat notable among supplements.

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By becoming an Examine Plus member, you'll have access to all of the latest nutrition research on over 300 supplements across over 500 different health goals, outcomes, conditions, and more.

Frequently Asked Questions and Articles on Allergies

Which supplements can help against colds and the flu?
Vitamin C, vitamin D, zinc, and other supplements may provide an edge against colds and the flu, but they should only serve to complement your main defensive arsenal: good hygiene, proper hydration, healthy diet, restful sleep, stress control, and exercise.
Click here to see all 28 references.