Is there an age restriction on purchasing dextromethorphan in most states?

Dextromethorphan is a common over-the-counter medication used as a cough suppressant. In several states, there are age restrictions in place for its purchase due to concerns about misuse, particularly among adolescents. These regulations have been introduced as a response to reports of recreational use of dextromethorphan, which can lead to adverse effects and potential substance abuse.

The rationale behind these age restrictions is to prevent access to the medication by younger individuals who may not use it appropriately. Consequently, it is common for states to require that purchasers be a certain age, often 18 years or older, to buy products containing dextromethorphan. This is why the correct response to the question is that there is indeed an age restriction on purchasing dextromethorphan in most states.