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The rate of caffeine a day: how much caffeine can be consumed in a day

The rate of caffeine a day depends on weight, age and health status. There are people with sensitivities to caffeine, there is also a dependence on him. Both conditions are highly undesirable and their development is in our hands. By eating normal amounts of caffeine a negative reaction does not occur in most people who have no intolerance of the stimulant. But in order to comply with the rules, you need to know about them in detail: how much caffeine is in your Cup?

Properties of caffeine

The rate of caffeine per day depends on its properties. It is a stimulant that stimulates the Central nervous system, raises your heart rate, dilates blood vessels, increases the level of adrenaline in the blood. Dosed in the form of relatively safe, if a person has no heart problems and blood vessels. However, like any stimulant it can cause significant damage, especially with excessive use.

Initially, the caffeine is called theine was dropped from the leaves. But not everyone knows that caffeine, theine, guaranine, and mateine doesn – extract from mate leaves – are identical substances. The chemical structure and properties belong to the alkaloids.

Caffeine as an alkaloid addictive – theism. After another dose of caffeinated product, the person feels inflow of forces, cheerfulness, his accelerated pulse and releases the dopamine, which leads to a good mood. The effect lasts an hour. After a pleasant effect is a sharp regression – the person feels fatigue, weakness, irritation, can start a headache. The regression lasts more than a pleasant effect and an average of 4-5 hours.

This property, as any alkaloid, based on the principle of action of substances – the initial vasodilatation and then a sharp contraction. For this reason, a lot of caffeine is not recommended for people with diseases of the cardiovascular system.

The most comfortable dose of caffeine is 0.3 g at a time and no more than 1 g per day.

The maximum dose per day

The smell of coffee - sometimes the only thing that makes you rise in the morning, improves mood and gives strength to start a new day. Coffee lovers know that excess consumption of flavored drink can cause problems with the cardiovascular system. To safely enjoy your coffee and not worry about health you must consider the daily rate.

If low doses caffeine stimulates the nervous system, its large number of leads to exhaustion. A lethal dose for the body is 150-200 mg of pure kofeinya 1 kg of body weight. However, to reach such a dose is not so simple: to drink a fatal dose, you need to drink about 90 cups of coffee in a short time.

Despite the popularity of coffee, it is a mistake to think that this drink is the main carrier of caffeine, although most popular. There are plants that will not yield coffee content in its composition an invigorating element. Thus, there are several major plant sources:

  • tea;
  • cocoa beans;
  • mate;
  • coffee;
  • guarana;
  • Cola.

In the absence of health problems can be consumed per day 400 mg of caffeine, which is contained in these plants with different concentrations. In terms of the familiar concepts, the daily dose of these substances should not exceed the following:

  • 2 liters of instant coffee;
  • 800 ml of boiled coffee;
  • 180 kg of black chocolate;
  • 3.8 l Coca-Cola;
  • 1.2 l energy;
  • 1.8 liter strong tea.

The maximum dose of caffeine per day, which for a healthy adult is 400 mg, significantly reduced, if we are talking about teenagers or pregnant women:

  • pregnant women can eat no more than 200 mg net of stimulant in a day;
  • teenagers – 3 mg per 1 kg of body weight;
  • children 30-100 mg per day, depending on growth.

The maximum one-time admission for an adult is not more than 100 mg.

The contents in the products

It is found in the most unexpected of the usual product – beer with guarana extract, sweets, chewing gum, bright teas. In terms of pure caffeine our favorite products are as follows:

  • Cup of decaffeinated coffee – 3 mg;
  • a Cup of hot chocolate – 19 mg;
  • brewed green tea bag – 20 mg;
  • shot of espresso in 27 ml;
  • 200 g of Coca-Cola – 40 mg;
  • brewed a bag of black tea has 45 mg;
  • the Bank's energy – 80 mg;
  • a Cup of instant coffee 82 mg;
  • a Cup of natural coffee 95 mg.

Enjoying a drink, remember that over time you can drink more than two cans of Coca-Cola or two cups of black tea so as not to exceed the dose of caffeine, the maximum recommended for single use, which is 100 mg.

People often drink beverages based on it, to get the effect of usbdrive, toning. However, a pleasant taste and aroma of made tea, coffee and other popular beverages quenching thirst. For this reason, they began to produce without caffeine in the formulation.

Interesting details

At high doses of caffeine depleted nerve cells. Academician Pavlov found that it affects the cerebral cortex, strengthening and regulating its work. High dose cause increase positive conditioned reflexes andincreases motor activity. Followed by increasing mental and physical performance, reducing fatigue and drowsiness. The effect on the Central nervous system is such that could lead to its critical state when the system is weakened.

In connection with the above, it is used with caution persons whose Central nervous system for any reason may be unstable. In this case, to calculate single and daily dose of caffeine you need individually.

You also have to remember its the properties that affect the use of certain medicines, particularly sleeping pills and narcotic substances in the composition. Caffeine acts on the spinal cord, increasing its reflex excitability. It has a stimulating effect on the process of respiration, also affects the vasomotor centre.

At high doses there is an increase in cardiac function, myocardium is reduced more intensively, increasing the risk of attack. While blood pressure also increases, which, coupled with the expansion of blood vessels leads to a significant rush of blood to the chest and the upper half of the body.

Caffeine reduces the amount of blood clots in the blood, stimulates the stomach.

People who regularly take caffeine in high doses, is a physiological and psychological addiction. In the abrupt cancellation of admission of the stimulator in the body such people have withdrawal syndrome: fatigue, drowsiness, depression. This is due to the fact that in the brain cells under the influence of caffeine was the growth of the adenosine receptors, which by its molecular composition is similar. Adenosine was replaced by an effect of caffeine, but at the end to "recharge" the balance was broken.


Caffeine is a very potent substance, which should be taken with great caution. You can drink a Cup of tea after a meal to enjoy its taste and to help the body digest food. However, even the tea can cause an imbalance of the Central nervous system and disrupt the state of the heart and blood vessels. In fact in one Cup of tea is half of a single norm of caffeine, this means that for good health you should not drink more than 6-8 cups a day. Regarding coffee these figures are higher by half and in terms of cups will be no more than 3-5 cups per day. For fans of flavored drinks there are their decaf counterparts, to drink which is unlimited.

You should define individually the maximum single dose of stimulant per day for each person, as all conventional norms in a relatively healthy person with fully functioning body functions, what can be said about the average resident of the metropolis – constant stress and poor environment weaken the immune system and health in General. So if you have any question about my rate of caffeine per day, it is first advisable to visit cardiologist, neurologist and other specialists, finding out their opinion on that score.

Should not be treated with a potent psychostimulant lightly, allowing himself to enjoy their favorite aroma whenever you want. Need to take coffee and other strong caffeine drinks only in the first half of the day preferably in the morning. This will allow to perform their main function – to give energy and vitality to enjoy their favorite flavor with minimal harm to health, sleep and diet.

Take caffeine consciously, don't let the large amount of chocolate for their children, as this baby sweetness is also a source of caffeine. Adolescents are advised to take no more than 100 mg of stimulant a day, but the optimal dose for them is 100 mg per day. Protect yourself and your loved ones.