Caffeine levels in energy drinks - Consumer Reports

Energy drinks, rich in caffeine, linked to sleep problems: New study

Amway, XS™ Energy Drink - Caffeine Free Cranberry-Grape, Energy Drinks

Cheapest Energy Drink: Finding the Best Value for Your Boost

Top 10 energy drinks: the best of the worst - West Side Story

Important Facts about Energy Drinks that Every Consumer Should Know

Strongest Energy Shots: Potent Quick Boost Solutions - StrawPoll

Caffeine levels in energy drinks - Consumer Reports

Caffeine: How much is too much? – Orange County Register

Examining the 9 Latest Trends in Energy Drinks

Strongest Energy Shots: Potent Quick Boost Solutions - StrawPoll

Canada recalls six energy drinks, including Prime Energy, for caffeine and labeling violations, but some companies say there's a catch

Cheapest Energy Drink: Finding the Best Value for Your Boost

Company Analysis

Energy Drinks Market Size, Share