Was just confuse about this two words. An did a research for it, I was made to understand that the word drug is not from dictionary just the government dictates it

Facts

The terms “drug” and “medicine” are often mistakenly used as two similar terms. However, in the strictest sense, the two have different meanings or definitions, and they can serve different purposes.

It is just the government or the law that dictates that these two have a thin line of separation. It is not the dictionary that gives their distinct definitions but the terms of its legality and social perception. As defined by law, medicines have fairly negligible toxicities while drugs are habit-forming substances that may lead to some serious adverse effects even though it is still initially used to cure diseases.

Read more http://www.differencebetween.net/language/words-language/difference-between-drug-and-medicine/

Op, thansh u.