What Happens if you Drink too Much Caffeine?

what happens if you drink too much caffeine

Every morning billions of people around the world start their day off by consuming the renown drink that we all know and love, that being coffee. For its majority, coffee contains caffeine, which is a natural stimulant that can be found in coffee and tea amongst others.

One cup of coffee, which is 273 g contains around 94.8 g of caffeine. However, caffeine out of all the parts of your body, mainly affects your brain. This is why when drinking coffee, you will feel more energized and have the ability to stay awake, even if you didn’t have enough sleep the day prior to drinking coffee!

Besides keeping you awake, caffeine will increase your adrenaline levels and brain activity, so that you can power through the day and complete any tasks that you have planned.

How much Coffee is too much Coffee?

The famous Greek philosopher, Aristotle lived his life by one rule – “all things should be in moderation”. When you are doing everything in moderation you can enjoy the “wonders of life”, without putting your body at risk. According to the U.S Food and Drug Administration (FDA), and to answer the anticipated question of what happens to your body when you drink too much caffeine? The safe amount of coffee per day is 400 milligrams. That is about three 6-ounce cups of coffee, four cups of regular tea, or two energy drinks.

The toxic effects of coffee can be seen around the rapid consumption of 1.200 milligrams of caffeine, or 0.15 tablespoons of pure caffeine.

You should always keep your caffeine in check during the day, so that you can enjoy all the benefits of coffee, while having a healthy body and mind. Be careful though, when you are consuming foods and drinks that might have caffeine in them.

These types of foods and beverages have one thing in common, and that is “energy-boosting ingredients”. Besides the normal types of foods that have “hidden” caffeine in them, candies and chewing gum also contain caffeine.

Energy-boosting ingredients can often be found in caffeine pills and some workout powders. Always check the label containing the ingredients of each product and try to consume caffeine accordingly to avoid any of its negative effects.

If a Coffee is “decaffeinated”, does that mean that it has no Caffeine?

The short answer is No. Decaffeinated coffee has the least amount of caffeine and can be a great substitute to caffeinated coffee. There are just 7 mg of caffeine in an 8-ounce (236-ml) cup of decaf coffee!

How much Caffeine is in a cup of Coffee?

We know that numbers can be confusing at times and coffee is no playing matter! This is why, below you can find how much caffeine there is, in your favorite beverages.

BeverageCaffeine per serving
Brewed coffee95g (8 oz)
Percolated coffee200g (8 oz)
Brewed decaff9.4mg (473ml)
Instant coffee65mg (250ml)
Instant decaff2.4mg (8 oz)
Espresso45mg (25ml)
Turkish coffee63mg (75ml)
Coca-Cola33mg (330ml)
Red Bull80mg (250ml)
Diet Cola42.2mg (330ml)
Decaff6mg (250ml)

Symptoms of consuming too much Caffeine

Caffeine in moderate to low amounts is safe for most people, but what happens to your body when you drink too much caffeine?

Genetics play a huge role when it comes to caffeine, according to genetics some people can tolerate bigger amounts of caffeine without experiencing any of its negative effects.

On the other hand, those who aren’t used to consuming caffeine, have an increased chance to show the negative symptoms of caffeine, when consuming coffee in moderate amounts.

Some of the symptoms of consuming too much caffeine can be seen below:


what happens if you drink too much caffeine

Insomnia is a sleeping disorder, that affects a large part of the common population. Having insomnia can massively affect your day-to-day life and is often followed by low energy and most importantly a depressed mood.

Such a disorder can cause havoc to your sleeping schedule and affect your daily interactions with other people. Aside from, mental stress and alcohol, large amounts of caffeine is another risk factor that can cause insomnia.

In moderate amounts caffeine can help you stay awake during the day, but too much of it will disrupt your sleeping schedule and make it harder for you to fall asleep or even fall asleep at all.

The effects of caffeine tend to wear off after an average of five hours and can go up to nine hours, but it might vary according to the individual. That is why, you should drink your coffee in the earlier hours of the day, so that you can sleep easier at night, without having to worry about falling asleep.

To maximize the effectiveness of your sleeping schedule and benefits of caffeine, you should pay attention how much and when you are drinking coffee.


Without a doubt, drinking coffee can often become a way of life, since it is so flavorful and can bring you so many benefits. However, such a practice combined with large amounts of coffee can become a habit and sometimes even addiction.

Consuming large amounts of caffeine can cause withdrawal symptoms, that stop you from going without coffee even for a few hours.

Caffeine alone can’t cause addiction, but when it is linked with daily coffee consumption, there might be a chance that you will become addicted to coffee and its many properties.


Teenagers and adults are the main victims of anxiety. Anxiety can lead to poor quality of life and even worse chronic anxiety.

Depression is often a follow-up of anxiety and is something that shouldn’t be taken lightly, since a large number of teenagers suffer from it and that number constantly rises.

As said before, caffeine can help you stay alerted and make you feel energized, but large quantities of caffeine can cause jitteriness, nervousness and similar symptoms.

Rising stress levels are often connected with anxiety and coffee consumption. If you are feeling nervous or you are feeling stressful for no reason, then you should reduce the amount of your caffeine intake.

Accelerated Heart Rate

The feeling of your heart racing can be quite stressful and scary. An altered heart rate rhythm may occur if you are consuming too much caffeine. Those who have an accelerated heart rate can have cases of dizziness and in some cases even fainting.

Although, further studies must be conducted, considering caffeine and accelerated heart rate. If you are noticing your heart beating too fast, then drinking too much caffeine may be the cause.

Digestive Issues

A symptom that can surely not be left unnoticed is diarrhea or bowel movements considering the question of what happens to your body when you drink too much caffeine.

Drinking coffee when you wake up can help get the bowel moving, but large doses of caffeine can often cause diarrhea or loose stools. Those who suffer from gastroesophageal reflux disease (GERD) are the most vulnerable to these digestive issues, since caffeine can worsen their symptoms.

Alternatives to Coffee?!

Staying away from coffee can be a difficult task, since it can give you so many health benefits and it is simply so delicious. We know that such a question can be quiet menacing, but what if there are alternatives to coffee, that can be as flavorful and beneficial as coffee?

After days of research (and a lot of coffee), we found some alternatives that can replace the coffee that we know and love with something just as equal.

Matcha Green Tea

Matcha is a bright green powder, made from young grinded tea leaves. After the grinding process, the green powder is thrown into a cup of tea and is whisked with hot water. This is a completely different process, from the one that we know considering the usual green tea.

Most importantly, matcha does contain caffeine but in smaller amounts making it safe to consume, while having the positive effects of caffeine. The taste of matcha tea depends solidly in the quality of leaves that are grinded. The ideal taste for matcha is slightly sweet, without being bitter.

Yerba Mate Tea

Yerba mate is produced from the caffeinated leaves of a native species of holly tree, Ilex Paraguariensis, which is found in the South American rainforest. What you might not know is that, yerba can be found worldwide and more specifically in a variety of energy drinks.

Yerba mate leaves are hand harvested from cultivators known as yerbateros. After the leaves are harvested, dried and grounded, a gourd is filled with yerba mate leaves and hot water, then they are ready to be served!

So, when you are consuming your favorite iced tea, there is a chance that it will contain yerba and you won’t even know it, without looking at the ingredients!

The caffeinated leaves that yerba mate is being produced from will temp anyone to give it a try, since it has the health benefits of tea and the characteristics of what makes coffee so strong and flavorful.

Golden Milk

A drink, alone called “Golden Milk” will persuade anyone to give it a try. It has the word golden in it, so how bad can it be?

The process of mixing a variety of spices like turmeric, cinnamon, ginger, non-dairy milk and other spices, is what makes the golden milk “come to life”.

The taste of the golden milk as you have probably guessed already not only is it tasty, but some of its benefits are that it helps improve your mood, supports brain function and increases your energy levels.

Lemon Water

Who said that water can’t be flavorful? Although, you can drink water instead of lemon water as a substitution for coffee, lemon water is rich in vitamin C and adds that much needed flavor that you might be wanting.

You can get creative, when preparing your lemon water by adding other fruits and herbs, so that you can make it much more flavor and keep things interesting!

Rooibos Tea

Rooibos tea is produced from the leaves of rooibos – often called “red bush” and is found in Southern Africa.

The rooibos leaves undergo a fermentation process, that gives this reddish type of color to the leaves. The process, which the rooibos tea is served, is identical to that one of the black tea.

This tea is often served with little or no milk, while the addition of honey or sugar can add extra flavor to this wonderful tea.

The taste of the rooibos tea is somewhat similar to hibiscus tea, while resembling the earthly flavor of the yerba mate tea.

Last thoughts

We all enjoy a cup or two of coffee every day, but regardless of how much coffee you can tolerate or consume there are some major side effects that can occur from drinking too much coffee. Always remember to keep your coffee amounts in check, so that you can protect yourself from any unwanted symptoms.

So, what happens if you drink too much caffeine? If you are suffering from insomnia, anxiety and upset stomach among other conditions, while you are consuming coffee on a daily basis, then the main “culprit” might be coffee!