22 Facts About Coffee: The World’s Most Important Beverage luapo | June 17, 2012 | News | No Comments 4. The lethal dose of caffeine is roughly 100 cups of coffee. Read more… Share this:TwitterFacebookLinkedInPinterestReddit Related posts: How To Break Your Daily Caffeine Habit And Use Coffee Strategically Coffee addiction may be grounded in genes Rejection Feels Like Spilling Hot Coffee on Your Arm Leave a ReplyCancel reply