500 ml = 16 oz: 16 oz of coffee per day is not dangerous, but I am not sure what you mean by without rest. If you mean you drink 16 oz of coffee every day without skipping a day, this is fine and not dangerous. If you mean that the coffee is not allowing you to rest, then perhaps you are drinking too much.
Answered 8/25/2016
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A doctor has provided 1 answer
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