Symptoms of caffeine overdose and toxicity can include nausea, vomiting, hallucinations, anxiety, rapid heart rate, dizziness, trouble sleeping, and seizures ( 31). Summary As one small 8.4-ounce (260-ml) can of Red Bull provides 75 mg of caffeine, drinking more than 5 cans per day could increase your risk of caffeine overdose ( 2). It’s also high in several B vitamins, including thiamine (B1), riboflavin (B2), niacin (B3), B6, and B12 ( 2).

As Red Bull is high in sugar, frequent and excessive intake may increase your risk. May increase high-risk behavior

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Of course, not everyone who drinks Red Bull will experience an increase in high-risk behaviors. Still, it’s important to be aware of the potential risks, especially in younger adults and when alcohol is involved. May lead to caffeine overdose and possible toxicity We work with collectors on the front lines of the ocean plastic crisis in Brazil, Egypt, Haiti, Ghana, India, Indonesia and The Philippines, but we need your help taking part in the solution to turn off the ocean-plastic tap. Many factors affect how much caffeine you have to consume for it to be dangerous and potentially life-threatening. While current recommendations call for limiting caffeine to no more than 400 mg per day in healthy adults, cases of caffeine-related deaths have primarily been in individuals with unusually high intakes of 3–5 grams of caffeine per day ( 28, 31).

While the exact composition varies by country, additional ingredients in Red Bull include sugar, carbonated water, baking soda, citric acid, magnesium carbonate, glucuronolactone, and artificial colors and flavors ( 1). However, the average half-life of caffeine in the blood ranges from 1.5–9.5 hours, which means it could take up to 9.5 hours for your caffeine blood levels to drop to half of its original amount ( 29). Excess sugar intake, especially from sweetened beverages, may increase your risk of type 2 diabetes ( 14). A 12-week study in rats found that chronic intake of Red Bull may cause a decline in kidney function. However, these results have not been replicated in human studies ( 18). Furthermore, the study noted that energy drinks were twice as harmful to tooth enamel than soft drinks ( 17). May negatively affect kidney healthResearch indicates that drinking acidic beverages can damage tooth enamel, which is the hard outer coating that helps protect your teeth against decay ( 15). One recent study in 34 healthy adults found that drinking 32-ounces (946 ml) of Red Bull daily for 3 days resulted in significant changes to the interval between heartbeats ( 39). Despite these increases, moderate and occasional intake of Red Bull is unlikely to cause serious heart problems in healthy adults. Research has shown an association between drinking Red Bull and increased high-risk behavior, especially when combined with alcohol ( 1).

Though Red Bull remains a popular beverage, research suggests that it may negatively affect your health. Can increase blood pressure and heart rate

Additionally, while research is limited, drinking Red Bull could worsen heart health and be life-threatening in individuals with pre-existing high blood pressure or heart disease ( 11). May increase type 2 diabetes risk

These increases in heart rate and blood pressure are thought to be largely due Red Bull’s caffeine content, as one large 12-ounce (355-ml) can contains 108 mg of caffeine — about the same amount as a cup of coffee ( 2, 10, 11).While safe doses of caffeine vary by individual, current research recommends limiting caffeine to 400 mg per day or less in healthy adults ( 28).