Delsym
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Delsym is an American brand of over-the-counter cough medicine. It is different from most brands of cough medicine as the active ingredient is "time released". The time release allows for the drug to suppress coughing for a longer period of time without taking more.
The active ingredient per teaspoon (5 ml) is Dextromethorphan polistirex, equivalent to Dextromethorphan 30mg.
[edit] Method of Action
The active ingredient, Dextromethorphan, is surrounded by an edible plastic called polistirex. When the Delsym arrives in the stomach, an amount of Dextromethorphan is directly released into the blood stream while the rest is surrounded by a plastic that is slowly dissolved by stomach acid. After the polistirex is dissolved sufficiently, more dextromethorphan is released.
