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Asthma is an inflammatory breathing condition which can be aggravated by particular stimuli, and some supplements are currently being investigated as to whether the reactivity of a person to these stimuli can be reduced.

Research analysis led by Kamal Patel.
All content reviewed by the Examine.com Team. Published: Jul 5, 2013
Last Updated:

Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect asthma
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.
Outcome 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.
grade-b Minor High See all 4 studies
There appears to be a reduction in asthmatic symptoms associated with magnesium supplementation to a low degree, with the one study using corticosteroids alongside magnesium finding no effect. There may be a role for magnesium in aiding untreated asthma, but already medicated situations are not certain
grade-c Notable - See study
Preliminary evidence, but boswellia appeared to benefit much more people than did placebo in symptoms of asthma.
grade-c Notable Very High See 2 studies
Although more evidence is required, it appears to be more effective at suppressing asthmatic symptoms than other nutraceuticals. Mechanisms may be related to beta-adrenergic compounds (due to increasing cAMP and inducing bronchiol dilation)
grade-c Minor - See study
In children with upper respiratory tract infections and asthma, the amount of asthmatic attacks during sickness appears to be slightly but significantly reduced relative to placebo.
grade-c Minor Very High See 2 studies
A slight reduction in asthmatic symptoms has been noted with Pycnogenol supplementation
grade-c Minor - See study
Appears to be somewhat effective at reducing the occurrence of asthma attacks in youth
grade-c - - See study
Supplementation of vitamin E in medicated asthmatics failed to exert any appreciable benefits to symptoms.
grade-d Minor - See study
Non-allergic asthmatic symptoms were reduced in a pilot study using the seeds of moringa oleifera
grade-d Minor Very High See 2 studies
Asthmatic symptoms appear to be reduced with supplementation of nigella sativa seeds, in part due to benefits to lung function and in part due to its anti-allergic properties. Potency has not been adequately assessed
grade-d - - See study
No significant interaction between CLA supplementation and asthmatic symptoms