A man comes in with a prescription for some painkillers. He grumbles that he was hoping to be prescribed one of the new cannabis-based medicines (CBMs) for his arthritis. He thinks it is nonsensical when you can buy them at health food shops.
You ask if his current medication is working, and he says yes, but he is concerned that it will not be as effective over time.
DDA members are welcome to view a DDA response by visiting the library of drug information quizzes.