Question

Many products available to the public before world war i contained _______, which was accepted early on as a relatively harmless drug that was not recognized for its addictive nature.

Answer 1

The complete statement should look like this :
Many products available to the public before world war i contained cocaine, which was accepted early on as a relatively harmless drug that was not recognized for its addictive nature. This is a strong stimulant that is usually used to snort, or as a solution injected into a vein. It is made out of coca leaves which can be found in the South America.