Coffeine How much is too much?

            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.

               Although caffeine use may be safe for adults, it's not a good idea for children. Adolescents should limit caffeine consumption. Avoid mixing caffeine with other substances, such as alcohol. Even among adults, heavy caffeine use can cause unpleasant side effects. And caffeine may not be a good choice for people who are highly sensitive to its effects or who take certain medications. Women who are pregnant or who are trying to become pregnant and those who are breastfeeding should talk with their doctors about limiting caffeine use. Read on to see if you may need to curb your caffeine routine. You drink more than 4 cups of coffee a day You may want to cut back if you're drinking more than 4 cups of caffeinated coffee a day (or the equivalent) and you're experiencing side effects such as:  

1: headacheInsomnia

2:Nervousness

3:Irritability

4:Restlessness

5:Frequent urination or inability to control urination

6:Stomach upset

7:Fast heartbeat

8:Muscle tremors