Caffeine in coffee and soft drinks

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Consumed too much caffeine can cause unpleasant side effects such as nervousness, irritability, anxiety, insomnia and gastrointestinal disorders.

These side effects can be avoided if it will limit the amount of caffeine throughout the day. However, it is difficult to determine which is the exact amount of caffeine from the alcohol drinks’ composition or from freshly brewed coffee.


1. Overview
2. Caffeine in soft drinks
3. Caffeine in coffee
4. Effects of caffeine
5. Safety precautions

Caffeine in soft drinks

Specific amount of caffeine in soft drinks vary widely, depending on the brand. Generally, 350 ml (in caffeinated drinks) contain between 22 and 72 mg of caffeine.

Caffeine in coffee

Caffeine in coffee depends on a number of factors, including the type of coffee beans and the way that the coffee was prepared.

Generally 250 ml of coffee contains about 150 mg of caffeine, while the same amount of instant coffee contains about 93 mg of caffeine, much more caffeine than the same quantity of soda.

In addition, there are several types of coffee, including decaffeinated. The amount of caffeine contained by a decaffeinated coffee is about 5 mg per serving, but sometimes it can even reach 20-30 mg per cup.

Effects of caffeine

Caffeine affects the body generally in the same way, whether it comes from soda or coffee. Caffeine is a stimulant, which means that part to increased metabolism and central nervous system activity.

This usually leads to long-term growth in energy levels (but can cause including agitation), increasing heart rate and urinary frequency.

Caffeine blocks adenosine receptors, preventing the sensation of fatigue. Although the effect could be useful if a person intends to stay awake for a certain period of time, drinking coffee before bedtime can cause insomnia or can lead to nervous sleep.

Safety precautions

Although some people are more sensitive than others to the effects of caffeine, most can safely consume 200-300 mg of coffee every day without adverse effects. Those who regularly consume more than 500-600 mg of caffeine a day can have unpleasant symptoms and could become physically addicted of caffeine.

If you drink caffeinated coffee or juice is recommended to count your daily intake. It will reduce the amount of caffeine if negative effects occur, either through lower consumption or by replacing caffeinated beverages with beverages that do not contain caffeine. If a person has specific problems related to how it is affected by caffeine will seek medical advice.



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