Caffeine is a central nervous stimulant that aids in helping you stay awake and alert. Caffeine is found in many everyday foods and drinks such as chocolate, coffee, tea and soda. Caffeine pills are another readily available source. Caffeine is generally safe in moderation. Misuse of caffeine pills, however, may lead to a dangerous overdose.
Dosages
A regular-sized coffee or tea contains between 40 and 150 mg of caffeine. Caffeine pills may contain 100 to 200 mg per tablet. When used according to package directions and not combined with other caffeine sources, caffeine pills may be relatively safe. TeensHealth states that 300 mg of caffeine per day is considered a moderate amount for adults. Combining caffeine pills with other sources of caffeine may increase caffeine levels well above moderate amounts.
Risks
Consuming large amounts of caffeine may cause a sudden increase in your blood pressure, which can have devastating effects on your heart. These effects may be fatal, as reported by ABC News in November 2010, when a British man died from a caffeine overdose. Two other deaths from caffeine overdose have been reported by "Forensic Science International" in 2005.
Symptoms
Symptoms of caffeine overdose may vary from person to person. Symptoms include rapid or irregular heartbeat, confusion or changes in alertness, increased thirst, increased urination and insomnia. Too much caffeine may interfere with how well nerves work and function. You may develop seizures or difficulty breathing. Overdose from caffeine pills is a medical emergency; seek immediate medical care if you suspect caffeine overdose.
Treatment
If you've consumed too much caffeine, a physician may need to empty your stomach to prevent further damage from caffeine intoxication. Breathing support and heart monitoring may also be required. Hospitalization may be needed to ensure recovery.
References
- MedlinePlus; Caffeine Overdose; Jacob L. Heller; January 2010
- ABC News/Health; Massive Dose of Caffeine Kills British Man; Kim Carollo; November 2010
- MayoClinic.com; Medications and Supplements That Can Raise Your Blood Pressure; October 2010
- "Forensic Science International"; Fatal Caffeine Overdose: Two Case Reports; S. Kerrigan, T. Lindsey; October 2005
- TeensHealth; Caffeine; Mary L. Gavin; January 2008
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