Well to be fair... All medicine and food is made up of chemicals.

For example, spicy peppers have the chemical Capsaicin which is what creates the burning sensation in your mouth and on your skin but it can also be used to help you when you're sick.

Whether natural or artificial, most mainstream medicine comes from a plant whether it be opioids (from opium/poppy) or now cannabis. Finding better and healthier alternatives is a great goal and so far nothing beats cannabis, imo.