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Cough medicines' effect is mainly placebo

BMJ 2006; 332 doi: (Published 05 January 2006) Cite this as: BMJ 2006;332:8

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  1. Roger Dobson
  1. Abergavenny

    Cough medicines work mostly through their sweet tastes and placebo effect, says a new report. The sweet syrups used in most over the counter medicines may contribute to the cough suppressant and expectorant activity, says a review published online in Respiratory Physiology and Neurobiology on 2 December (, doi:10.1016/j.resp.2005.10.004).

    “The review proposes that the major benefit of cough medicines for …

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