We get this question quite a bit. The answer is -- exactly the same as a regular cup of coffee if we're talking about caffeine intake!If talking about a maximum amount of healthy Brain Vitamin intake, we recommend no more than 8 tablespoons of ground coffee (4 servings) per day.With that being said, we do not recommend going over 500 mg of caffeine to have the best synergistic effects between Brain Vitamins and coffee. This would be the equivalent of 2-3 cups or 4-6 tablespoons per dayAssess your tolerance and be safe!