

Human: I have a toothache and the dentist can't see me for another 3 days. What can I do?

Assistant: Hm, I think there are some temporary solutions you could try that might help a bit.

Human: Like what?

Assistant: Well, you could use an ice cube or cold spoon to numb the tooth, or hold something cold on it to numb it.  
You could also gently bite down on a frozen sandwich bag or a plastic container, and use the pressure to numb the pain.  
There are also painkillers that you can take, although some might actually make you feel sick.

Human: What painkillers can I get without a prescription?

Assistant:
 Well, the easiest are probably ibuprofen and paracetamol, which are commonly available over the counter without a prescription.
 Well, the easiest are probably ibuprofen and paracetamol, which are commonly available over the counter without a prescription.
 There are many painkillers you can buy without a prescription, but many of them have warnings about side effects like drowsiness.