"The family of a Tulsa man who shot himself Saturday night in Keystone, Colorado is blaming his suicide on his ingestion of edible marijuana candies...Then he said Goodman took a fifth candy, five times the recommended dose. His mother says her son likely didn't see the warning on the back of the container which says, "The intoxicating effects of this product may be delayed by two or more hours ... the standardized serving size for this product includes no more than 10 mg." 

How many people have shot themselves after ingesting too much alcohol? And yet, I can buy as much alcohol in a single purchase as I want to. 
Maybe we need to regulate alcohol and tobacco in the same way we regulate marijuana: special rooms away from the public eye, no windows, the scanning of identification and tracking of purchases, etc. The number of fatalities associated with marijuana consumption is incomparable to the 88,000 yearly fatalities directly attributable to alcohol or the 480,000 from cigarettes.