Do you capitalize Amphetamines in a sentence?

You should capitalize "Amphetamines" only if it's the beginning of a sentence or if it's part of a proper noun.

Here are some examples:

* Amphetamines are a type of stimulant drug.

* The doctor prescribed amphetamines for my ADHD.

* The study looked at the effects of amphetamines on the brain.

However, if you are referring to a specific brand of amphetamines, you would capitalize it:

* I was prescribed Adderall, which is a type of amphetamine.

Let me know if you have any more questions!