2. Match the active ingredient with the historical development that best discusses the drug issue it mediates.  Each answer option is only used once. 1: Dextromethorphan 2: Pseudoephedrine 3: Codeine匹配题

The "Combat Methamphetamine Epidemic Act" placed products containing this active ingredient behind-the-counter.

The FDA placed a label on OTC medications containing this active ingredient to warn parents about its misuse potential.

At antitussive doses, this active ingredient is classified as a Schedule V drug.