It is safe for adults to consume caffeine, as long as it is consumed in moderation,
To keep caffeine at safe levels in the body, doctors recommend limiting intake to no more than 200 mg per day, according to the FDA. Two 5-ounce cups of coffee contains about 200 mg of caffeine, for example.
Every person is different, however, so a lesser amount of caffeine might be a better fit for you. Also, people who are pregnant, breastfeeding and children should be even more cautious of the amount of caffeine they consume, according to the National Institutes of HealthOff Site Icon (NIH).
If you are consuming too much caffeine, try to cut back slowly because caffeine can cause withdrawal symptoms, including headache, tiredness and depression, according to the FDA.
Up to 400 milligrams (mg) of caffeine a day appears to be safe for most healthy adults. … 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.
A safe caffeine limit is the amount of caffeine a person can consume without experiencing any negative caffeine overdose symptoms. It’s difficult to assign an exact amount for everyone because people can have different sensitivities or reactions to caffeine based on age, medical history, and tolerance.