Quote Originally Posted by IM708 View Post
caffeine, AAKG to name a couple
Listen to IM, everything else is just marketing hype (and if you read the ingredients, most contain caffeine). 300-400mg of Caffeine 30min before will hit you hard. You can buy it at any drug/pharmacy store very cheaply, like $5-10 for 100x100mg tablets. That beats $50 hyped up garbage.