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Florissant, MO
A 22-year-old female asked:

how many cups of coffee can you safely drink a day?

1 doctor answer1 doctor weighed in
Dr. Marvin Ott
Emergency Medicine 20 years experience
Two to three: The best amount of caffeine to have is about 300 mg or less per day. This equates to about 2-3 cups, depending on how strong they are. Drinking more is not unsafe per se, but you won't get any additional alertness, and the diuretic effects will make you urinate frequently. Hope this helps!

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Similar questions

A 36-year-old member asked:

How many cigarettes is safe to take in a day?

3 doctor answers22 doctors weighed in
Dr. Kenneth Cheng
Family Medicine 31 years experience
Zero: There is no safe number of cigarettes. Every puff from just one cigarette is harmful.
A 31-year-old member asked:

How do afo's work, how well do they work, and how many hours a day must they be worn?

1 doctor answer1 doctor weighed in
Dr. Alan Ali
Dr. Alan Ali answered
Psychiatry 32 years experience
AFO: They stabilize the ankle & foot. Amount of time worn depends on type of injury. Consult your orthopedic doc.
A 29-year-old member asked:

How many hours is it safe to drive per day on journey?

1 doctor answer1 doctor weighed in
Dr. Alan Ali
Dr. Alan Ali answered
Psychiatry 32 years experience
Driving: Different drivers can tolerate different amount of hours, also depends on how much sleep they had prior to the trip. Advise is : when you start to yawn or feel tense or tired, pull over & rest.
A 45-year-old member asked:

How many hours of excercise do I have to do to a day to get into really good shape?

1 doctor answer1 doctor weighed in
Dr. Frank Holmes
Sports Medicine 23 years experience
30-60 minutes: Start at 30-60 minutes 3 times/week. Increase up to 5 times/week gradually with an increase to 45-90 minutes. A mixture of cardio and weight training will likely give you the optimal results.
Baltimore, MD
A 19-year-old female asked:

My medication says to take two capsules & up to 3 times a day. So how many am I supposed to consume?

1 doctor answer1 doctor weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
Up to 6 caps. a day: "Take two capsules" usually means taking 2 capsules at the same time. "Up to 3 times a day" usually means that a patient can decide how many times he wants to take the medicine (depending on how much his symptoms are), meaning he can choose to take medicine once a day, twice a day, or thrice a day. In this case, the maximum is 2 capsules each time, 3 times a day, equaling 6 capsules per day.

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Last updated Aug 2, 2014

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