The company has since enhanced its caffeine labeling “ out of an abundance of caution,” said a Panera spokesperson in a statement to NBC News. In October 2023 her family filed a lawsuit against Panera for failing to adequately disclose the drink’s caffeine content. After drinking the beverage, she went into cardiac arrest and died. That product contains between 260 and 390 mg of added caffeine, according to the company. In September 2022 a college student with LQTS ordered a “charged lemonade” from the chain restaurant Panera Bread. Because caffeine can cause a similar spike in adrenaline in the bloodstream, individuals with long QT syndrome might need to be careful about their caffeine consumption. “A classic example is someone diving into a swimming pool and suddenly ,” says Gregory Marcus, a cardiologist at the University of California, San Francisco. Under certain circumstances, a sudden jolt of adrenaline might cause someone with LQTS to go into cardiac arrest. Long QT syndrome (LQTS) is a genetic condition named for the lag that it produces in the heart’s electrical activity as graphed by an electrocardiogram (ECG). Some rare health conditions can make consuming caffeine riskier. When a person consumes too much of this stimulant, they can start to feel jittery or overly excitable and may have difficulty sleeping. In your bloodstream, it also boosts the circulation of cortisol and adrenaline, both of which cause your heart to beat faster and your energy levels to peak. Caffeine pills and powders can be dangerous if taken in bulk and should be used cautiously.Ĭaffeine, a central nervous system stimulant, blocks the effects of sleep-inducing chemicals, such as adenosine, in your brain. And some energy drinks can contain up to 300 mg in a 16-ounce (473-milliliter) can. A Starbucks grande dark roast contains about 260 mg of caffeine, while a medium hot coffee from Dunkin’ has 210 mg. The amount of caffeine in a cup of commercially brewed coffee can vary wildly, however. On average, an eight-ounce (about 240-milliliter) cup of drip coffee prepared at home contains around 100 mg of caffeine, so most people would need to consume more than 100 cups of joe in a single sitting before they started to get into dangerous territory. “We’re talking multigram doses,” in the neighborhood of 10 grams or more, he says. Fortunately, consuming that much caffeine is really, really difficult. “You can certainly die from caffeine overdose,” says Jose Antonio, a sports and exercise scientist at Nova Southeastern University. Although you may be able to have more without negative consequences, there is theoretically a limit to how much caffeine your body can handle. Food and Drug Administration recommends that people consume no more than about five milligrams of caffeine per kilogram (2.2 pounds) of body weight daily, which adds up to around 400 mg for a 79-kg (175-pound) person. But is there such a thing as too much caffeine? consume caffeine daily, primarily in the form of coffee, tea and energy drinks. In the land of venti pumpkin spice lattes and caramel macchiatos, Americans frequently partake in caffeine fixes.
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