Does guaifenesin work? Unpacking the evidence on this expectorant
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3 min read
Since its FDA approval in 1952, guaifenesin has been the only over-the-counter (OTC) expectorant available in the U.S.. But despite its widespread use, the question of **does guaifenesin work?** has yielded mixed results in clinical studies, leading to debate among healthcare professionals and patients.