Today is National Coffee Day! Coffee contains caffeine, which is the topic of this post. Caffeine is used in one form or another every day by millions of people to increase their wakefulness, to improve their concentration and focus and to combat fatigue. Caffeine comes in many different forms – coffee, tea, chocolate, cola beverages, “energy shot” drinks and may even be found in some medications.

Recent Research on Caffeine’s Benefits

Recently I’ve been pleasantly surprised to learn some powerful positive facts about caffeine that are listed in the chart below. It’s great that caffeine has some health benefits in addition to being so desirable to many people!

How Much Caffeine is Too Much Caffeine?

First, for most healthy adults up to 400 milligrams of caffeine per day appears to be safe and may even be beneficial! That’s roughly the amount of caffeine in 4 cups of brewed coffee, 10 cans of cola or 2 “energy shot” drinks. Of course drinking 10 cans of regular cola daily is a questionable practice due to the amount of sugar one would be receiving from that much soda!

Secondly, caffeine intake in children is not recommended on a regular basis and adolescents should limit their caffeine intake to no more than 100 milligrams/day, according to the Mayo Clinic.

Thirdly, heavy daily caffeine use (more than 500-600 milligrams/day) may cause side effects such as insomnia, nervousness, restlessness, irritability, upset stomach, fast heartbeat and muscle tremors. Interestingly some research has found that men may be more susceptible to the effects of caffeine than women.

Caffeine consumption considered carefully leads to the conclusion that moderation is the key regarding caffeine intake. Unless there are health reasons or religious reasons to abstain from any caffeine intake at all, it appears to be safe and possibly even beneficial for adults to enjoy the equivalent of 400 milligrams of caffeine daily.

You may wish to consult the following charts to determine how much caffeine you are taking in daily.

Tables Listing Caffeine in Various Products

Type of Coffee                         Size                                 Caffeine (milligrams)       
Regular, brewed 8 oz. (237 ml) 95-200 mg.
Decaffeinated, brewed 8 oz. (237 ml) 2-12 mg.
Expresso 1 oz. (30 ml) 47-75 mg.
Expresso, decaf 1 oz. (30 ml) 0-15 mg.
Instant 8 oz. (237 ml) 27-173 mg.
Instant, decaf 8 oz. (237 ml) 2-12 mg.
Latte or Mocha 8 oz. (237 ml) 63-175 mg.


Type of Tea                                  Size                                     Caffeine (milligrams)                
Black Tea 8 oz. (237 ml) 14-70 mg.
Black Tea, decaf 8 oz. (237 ml) 0-12 mg.
Green Tea 8 oz. (237 ml) 24-45 mg.
Iced Tea:    
 Instant, made with water 8 oz. (237 ml) 11-47 mg.
Ready-to-drink, bottled 8 oz. (237 ml) 6-40 mg.


Type of Energy Drink Size Caffeine (milligrams)
Amp, Regular or Sugar Free                                    8 oz. (237 ml)                       71-74 mg.                             
5-Hour Energy Shot 2 oz. (60 ml)                                200-207 mg.
Full Throttle, Regular or Sugar Free                     8 oz. (237 ml) 70-100 mg.
Red Bull, Regular or Sugar Free 8.4 oz. (248 ml) 75-80 mg.
Rockstar, Regular or Sugar Free 8 oz. (237 ml)                                   79-80 mg.


Product                                                  Size                                        Caffeine (milligrams)                            
Excedrin Extra Strength                                 1 tablet  65 mg.
NoDoz Max Strength 1 tablet                                      200 mg.
Chocolate Chips, semisweet 1 cup (168 grams) 104 mg.
Dark Chocolate-covered Coffee Beans 28 pieces 336 mg.


In conclusion, It’s great to find out that caffeine may actually be beneficial to one’s health! Moderation is the key to consuming caffeine with 400 mg./day being the target maximum amount. Caffeine intake greater than 400 mg./day may cause side effects as outlined above.

Disclaimer: This post on caffeine and its positive effects on some medical problems is for information only. There are some medical conditions in which caffeine intake is not recommended. This post is no substitute for medical advice from your doctor. Consult your physician for advice regarding your caffeine intake.

Credits: Charts adapted from Journal of Food Science, 2010, and USDA National Nutrient Database for Standard Reference. For more information, check out Nutrition and Healthy Eating at Stock photos from Pixabay.

Remember to Savor the Flavor!


*If you’d like to receive new Silver Foodie posts automatically, please enter your e-mail address in the space under “Silver Foodie Updates” on the right sidebar. Then click “Sign up.”  Thank you!

For a list of Link Parties in which I participate weekly, please click on “Link Parties” on the header menu bar or scroll down the right sidebar.



Consider Caffeine’s Amazing Powers — 22 Comments

  1. Janet, thanks for this informative post! I love coffee, the more intense the better! Have a wonderful weekend! Pam @ Everyday Living

  2. Hi Pam, You have such a beautiful setting in which to enjoy a cup outside! Hope you have a great week-end too! I’m heading to my high school reunion. Blessings, Janet

  3. I love my morning cup of coffee! Luckily, I am satisfied with just one cup, though occasionally I indulge in 2.

    Sadly, more and more tweets are regularly drinking some form of caffeine- which is not helpful.

  4. Hi Jenn, I’m concerned about teens and young adults drinking the energy drinks. Although if I’m honest I think we took No-Doz in college to stay awake to study for exams! Thanks for your comments! Blessings, Janet

  5. Hi Janet – I love my coffee but in moderation. I don’t like the side effects of too much caffeine and I’m not a fan of energy drinks. Great post. So informative!

  6. Thanks Ilka for your nice comments! Everything in moderation! Thanks for hosting Sunday’s Fitness Food Link Up! Have a great week! Blessings, Janet

  7. I love coffee! Thanks for sharing the caffeine information. Stopping by from Share the Wealth Sunday party.

  8. Hi Christine, Looks like from the name of your website that you like lattes in particular! Thanks for stopping by! Blessings, Janet

  9. I love coffee – I probably drink too much. Great post Janet! Lots of info! Thanks for sharing on the What’s for Dinner link up!

  10. Hi Helen, Thanks for the encouraging words! Glad you liked the post! Thanks for hosting What’s for Dinner! Blessings, Janet

  11. I love to hear that my coffee may actually be good for me! Thanks so much for sharing with us at Share The Wealth Sunday!

  12. Yea coffee may be good for me!! Please come share this at our blog hop we would love to have you!

  13. Hi Tana, I shared the post about coffee and a few others with recipes. Thanks for introducing me to your link party! Blessings, Janet

  14. What a great post with lots of really good information about our Caffenine. Hope you will come back to see us at Full Plate Thursday real soon and have a great week!
    Miz Helen

  15. Very interesting! I am not a coffee drinker, but I get my caffeine from Diet Coke. ? Thanks for sharing with SYC.

  16. Janet, this is some great information on caffeine. It’s nice to know my morning cup of coffee is beneficial to my health, yes!!! Thanks again for sharing this information!

  17. Hi Keri, I hate it when something gets an undeservedly bad rap sometimes so I wanted to share this information. Glad you liked it! Thanks for the kind words and visit! Come back soon! Blessings, Janet

Leave a Reply

Your email address will not be published.

%d bloggers like this: