A liter of redbull subsitute?  You sound like an addict just since you&#x27;re talking quantities of caffeine.<p>I hope you get past this. it&#x27;s especially difficult because a lot of people don&#x27;t realize caffene is a drug.  Like watching a couple who drink three bottles of wine a day talk down on someone for drinking a liter of spirits as an alcoholic.<p>They&#x27;re one and the same.