---
title: "Caffeine: What are hidden sources? - Mayo Clinic Health System"
url: https://stacklist.com/card/2f015e46-6cc2-43b0-9393-263391f67997
source_url: "https://www.mayoclinichealthsystem.org/hometown-health/speaking-of-health/what-are-hidden-sources-of-caffeine"
stack: https://stacklist.com/stack/70cc0144-b023-4b90-a785-124cd7cd845e
summary: "Hidden sources of caffeine extend beyond coffee and tea to include chocolate, medications, energy drinks, and various food additives. For most adults, consuming up to 400 milligrams of caffeine daily is safe, but excessive intake can cause side effects like insomnia, headaches, and high blood pressure."
tags: "caffeine, hidden-sources, health, nutrition, beverages, medications, wellness"
key_entities: "Mayo Clinic Health System (organization), American Heart Association (organization), Food and Drug Administration (organization), Brian Burroughs (person), caffeine withdrawal (concept), caffeine sensitivity (concept), energy drinks (technology)"
classification: "reference"
content_hash: "sha256:f13235e60eb87902f8c0514c11f1c08c80019bb9a141a0f18eb2607e699b300b"
acp_version: "0.2"
token_counts_approximate: 1068
visibility: public
agent_accessible: true
status: "final"
---

# Caffeine: What are hidden sources? - Mayo Clinic Health System

Skip to main content Close search Search Mayo Clinic Health System Calling to schedule an appointment? We’ve expanded phone hours to 7 a.m. – 7 p.m., Monday – Friday, for primary care and many specialties. Hours may vary by department. Posted By Brian Burroughs, P.A.-C. Family Medicine, Primary Care Recent Posts Speaking of Health Oh, my aching head: Tips for headache relief August 25, 2023 Featured Topics Behavioral Health Cancer Children's Health (Pediatrics) Exercise and Fitness Heart Health Men's Health Neurosurgery Obstetrics and Gynecology Orthopedic Health Weight-loss (Bariatric) Surgery Women's Health Topics in this Post Get healthy recipes and tips Family Medicine You probably know that tea and coffee contain caffeine, but did you know it also can be found in other drinks, food and some medications? You're not alone if you depend on caffeine t o help you concentrate or be alert. About 90% of U.S. adults consume a form of caffeine every day, according to the American Heart Association. How much caffeine is too much? Caffeine content in beverages widely varies. For most adults, consuming up to 400 milligrams of caffeine daily does not have adverse side effects. Depending on the type of beverage, that can be roughly four cups of brewed coffee, 10 cans of cola or two energy shot drinks. While consuming some caffeine is OK, too much can cause side effects, including: Fast heartbeat Headaches High blood pressure Insomnia Muscle tremors Adolescents and young adults must be cautious when drinking caffeine, and children should avoid it altogether. People who are sensitive to caffeine's effects or take certain medications should avoid consuming too much caffeine. People who are pregnant, want to become pregnant or are breastfeeding should talk with their healthcare team about caffeine consumption. Common caffeine sources If you reach for different types of beverages throughout the day, you may be drinking more caffeine than you realize. With a cup of coffee or tea with breakfast, a soda in the afternoon and a piece of chocolate after supper, caffeine is part of your daily eating habits. Some of the most common sources of caffeine are: Chocolate Coffee Medication Soda Tea Caffeine also can hide under some names that are less recognizable. Energy drinks have additives that contain caffeine to enhance the effects of the drink. Knowing about these additives can help you avoid consuming more caffeine than you thought, so be sure to check labels before you buy. Some common additives that contain caffeine include: Cartinine Choline Ginseng Glucuronolactone Guarana Inosol Kola nut Malic acid Maltodextrin Niacin Pantothenic acid Taurine Theanine Tyrosine Yerba mate Caffeine in powder or liquid form can be particularly dangerous. The Food and Drug Administration has warned that high levels of caffeine can cause serious health problems. One teaspoon of powdered caffeine is the same as drinking 28 cups of coffee, which is significantly more than the recommended level. Kicking a caffeine habit If caffeine becomes more of a hindrance than a help, you may want to consider cutting back. This can be challenging because an abrupt decrease can cause withdrawal symptoms like headaches , fatigue and difficulty focusing. To lessen caffeine withdrawal symptoms, try these tips: Be aware of and track how much caffeine you consume throughout the day. Cut back gradually so your body gets used to lower levels of caffeine. Check products you use for caffeine, such as over-the-counter pain relievers. Shorten the brew time of tea to cut down on the caffeine content, or choose an herbal tea that doesn't have caffeine. Switch to decaffeinated beverages, which have a similar taste but much less caffeine than their full-strength counterparts. Contact your primary care provider for guidance or evaluation if you're struggling with persistent or severe caffeine withdrawal symptoms. Brian Burroughs is a physician assistant in Family Medicine with special interest in headache treatment, in Red Wing , Minnesota. Topics in this Post Get healthy recipes and tips Family Medicine Related Posts 4 essential food safety tips for summertime gatherings The itchy truth: What to know about head lice Tips for mindful snacking