Tag: Rapid heartbeat

According to the FDA, up to 400 milligrams of caffeine per day is generally safe for most healthy adults, yet many people inadvertently exceed this amount. This overconsumption can lead to a state of overstimulation, a condition known as caffeine overload, or in severe cases, caffeine toxicity.

According to the Mayo Clinic, high doses of prescription niacin can cause a rapid heartbeat, often accompanying severe skin flushing and dizziness. This article investigates the mechanisms behind this reaction and addresses the question: **can niacin cause rapid heartbeat** and what the risks are.

While some nutrients are crucial for heart function, studies have shown that excessive intake of certain vitamins, particularly through supplements, can cause an irregular or fast heart rate. Understanding which vitamins can cause a fast heart rate is vital for managing supplement use and promoting overall heart health.