Here’s Why Labels are Going on Marijuana Edibles in Colorado
As of October 1, edible marijuana products sold in Colorado must be labeled with a diamond-shaped stamp and the letters THC, both on the packaging and on the products themselves. [1]
Source: The Cannabist
The rule referencing the psychoactive ingredient in marijuana was added after complaints rolled in about the similarities between the pot-based treats and regular candies and baked goods.