The bill targets products whose only active ingredient is dextromethorphan, described by pharmacists as the most common over-the-counter cough suppressant. Robitussin DM and NyQuil use this chemical.

But the active ingredients in each are different. Allegra contains fexofenadine and Claritin has loratadine. If you have seasonal allergies (hay fever), you know all about the aggravating symptoms ...