Here is what the search results say about the daily dose of caffeine and how much can be taken at once:
- 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” drinks123456.
- Pregnant or breastfeeding women are advised to consume no more than 200 mg/day4.
- Children aged 4 to 6 years should limit caffeine intake to 45 milligrams per day, children aged 7 to 9 years shouldn’t consume more than 62.5 milligrams per day, and children aged 10 to 12 years should avoid consuming more than 85 milligrams per day5.
- Healthy adults shouldn’t consume more than 400 mg of caffeine daily6.
- Caffeine in powder or liquid form can provide toxic levels of caffeine. Just one teaspoon of powdered caffeine is equivalent to about 28 cups of coffee. Such high levels of caffeine can cause serious health problems and possibly death1.
- People taking anti-anxiety medications, women who are pregnant or breastfeeding, and people with heart disease or high blood pressure should be cautious about their caffeine intake3.
- Too much caffeine can lead to an upset stomach, anxiety, headache, insomnia, and more6.
It’s important to note that the actual caffeine content in beverages varies widely, especially among energy drinks
1. Additionally, some people are more sensitive to caffeine than others, so it’s best to monitor your own tolerance and adjust your intake accordingly346.
