Caffeine is an alkaloid from the xanthine base, a chemical component present in more than 60 plants, mainly in coffee, tea, cocoa, cola nut and guarana. It is also known by other names such as guaranine (for guarana) or theine (for tea).


Effects of caffeine

Caffeine is a stimulant of the central nervous system. It eliminates sleepiness and fatigue, stimulates the brain, increases alertness, awareness and attention, allowing thoughts to flow more rapidly and clearly. It is also a diuretic.



Caffeine soothes headaches due to bad blood circulation, thanks to its intracerebral vasoconstriction qualities (it changes the diameter of the blood vessels). That is why it is found in many medication ingredients in treatment for headaches, migraines, neuralgia, etc.

Sport performance

Caffeine has a strong ergogenic effect. In other words, it produces a direct effect on mental and physical performance, shown in athletic studies about athletes who need greater resistance such as cyclists and long distance runners. It can give a 50% increase in resistance.

Cognative performance

Improves memorization, perception and learning.

Weight loss

Caffeine can increase the amount of calories burned, reduce body fat, and prolong the feeling of fullness.


Currently caffeine is the most used psychoactive substance (it produces temporary changes in perception, mood, conscious state and behavior) in the world. It is found not only in coffee and tea, but also in the majority of sodas, energy drinks and migraine medicine.

In the United States, the FDA (Food and Drug Administration) defines caffeine as a “food substance generally recognized to be safe”.


Like any food or medicine, excess can be harmful.
The excessive consumption of caffeine may provoke nervousness, anxiety, trembling, sleeplessness or a high heart rate.
People with cardiac problems such as hypertension, stress, anxiety and sleeping problems should avoid consuming caffeine.

Amount of caffeine in the most common foods (average in mg):

CAFFEINE ing dibujo


Amount of caffeine in Alti Vital:
– Caffeine: 12.5 mg
– Guaranine (or caffeine) within guarana: from 4.5 to 10.5 mg

Total caffeine content within a capsule of Alti Vital: from 17 to 23 mg.

Daily recommended caffeine:

Up to 200 mg daily (2 cup of coffee), caffeine is not harmful for most people.
In high amounts, the effects vary from person to person.

EFSA – European Food Safety Authority

Adults: intakes up to 400mg per day – about 5.7mg/kg bw per day – (5 cup of coffee) consumed throughout the day do not raise safety concerns for healthy adults in the general population.
Pregnant/lactating women: caffeine intakes from all sources up to 200mg per day consumed throughout the day do not raise safety concerns for the foetus.
Children and adolescents: children and adolescents: a safety level of 3mg/kg bw per day is also proposed for habitual caffeine consumption by children and adolescents.

FDA – Food and Drug Administration – USA

For healthy adults, the FDA has cited 400 milligrams a day—that’s about four or five cups of coffee—as an amount not generally associated with dangerous, negative effects. However, there is wide variation in both how sensitive people are to the effects of caffeine and how fast they metabolize it (break it down).