Health Canada said that at 200 milligrams of caffeine per can, Prime Energy exceeds the regulator’s acceptable caffeine limit of 180 milligrams per serving and should not be sold

Backed by two of YouTube’s best known stars, Prime was an immediate sensation when it launched last year, prompting long lines in supermarkets and reports of school playground resale markets.

Exploring the murky waters of hydration, super drinks, and an Irish homemade concoction