Respiratory tract infections
Supplements studied for respiratory tract infections.
Overview
Echinacea (13 studies) is the most researched supplement for respiratory tract infections. Trials suggest it may slightly lower infection risk and antibiotic use, though results are mixed across products and dosing strategies. Regular use over several months appears more consistent for prevention than high-dose treatment at symptom onset.
Alpha-Linolenic Acid (1 study) and Beta-Glucan (1 study, in combination products) have very limited preliminary data. See the heatmap and evidence reviews below.
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Relevant supplements sorted by DEX Score.
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SupplementDEX Database
4 supplements for and rated at least stars. All purchase bands. No minimum star filter.
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