What is best medicine for cough?

The ingredient guaifenesin is the only expectorant in the U.S., so look for it on the label if you need an expectorant. Suppressants help cut the number of times you cough. The active ingredient listed is usually dextromethorphan (DM). Other cough suppressants include camphor, eucalyptus oil, and menthol.Jul 28, 2021

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