Final answer:
Dextromethorphan (DXM), found in OTC cold and cough medications, is often regulated to prevent abuse, with sales generally prohibited to individuals under 18 years of age in many places.
Step-by-step explanation:
Dextromethorphan, commonly known as DXM or robo, is a cough suppressant found in over-the-counter (OTC) cold and cough medications. It's important to note that some states have specific laws regarding the purchase of medications containing DXM. In many places, the sale of DXM-containing products to individuals under 18 years of age is prohibited to prevent abuse. Often found in 'extra-strength' cough syrups, DXM is typically present at about 15 milligrams per teaspoon and is also available in pills and gel capsules with similar dosages. Due to its potential for abuse, especially among adolescents and young adults, regulations have been put in place to limit access to these medications. It's crucial to adhere to local laws pertaining to DXM purchase and consumption.