> we say "the dose makes the poison" but it doesn't change that regularly drinking a low dose of poison is not good. I'm not sure that's the right conclusion t

> we say "the dose makes the poison" but it doesn't change that regularly drinking a low dose of poison is not good. I'm not sure that's the right conclusion there. Vitamin A is a poison, because it's toxic in high doses. But that doesn't mean you should avoid vitamin A. The expression means that a poison cannot be defined independently of its dose. You need to know the chemical and the amount.