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110mg is about two cups of coffee. no, it's not a lot of caffeine. in adults, fatalities have occurred with doses of approximately 10 grams. Source(s): Pharmacist. sal1970 Â· 6 years ago.
How much is too much? Up to 400 milligrams (mg) of caffeine a day appears to be safe for most healthy adults. That's roughly the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two energy shot drinks. Keep in mind that the actual caffeine content in beverages varies widely, especially among energy drinks.