There guaranine is an analogue of the caffeine contained in Guarana seeds (Paullinia cupana). This active ingredient is widely used as a stimulant, both in impromptu preparations and in the form of specific food supplements or energy drinks.
In dietary supplements, guarana is usually found in the form of an extract or ground seeds. The latter contain on average from 3 to 8% of caffeine, a powerful alkaloid to which the interesting properties of guarana are due.
In fact, caffeine favors the release of two hormones, called adrenaline and noradrenaline (catecholamines), thanks to its action as a competitive antagonist towards the adenosine receptors.
Catecholamines favor the increase in body metabolism, heart rate, blood pressure and the number of respiratory acts (thus increasing blood oxygenation).
For this reason, guarana is recommended in case of psychophysical fatigue, depressive states and convalescence.
In sports, guarana extracts are successfully used to improve the ability to resist both physical and intellectual work.
It is often recommended as a useful supplement to accelerate weight loss and suppress appetite.
Doses and Method of Intake
One gram of guarana contains about 50 mg of caffeine (5%), a little less than a cup of coffee, which on average provides 80 mg. However, it must be considered that guarana seeds are much richer in caffeine than beans. coffee (3-8% against 1-2.5%). The doses of intake vary from product to product, in any case it is important not to exceed the recommended quantities and avoid prolonged use.
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Side effects
Among the side effects of excessive and uncontrolled use of guarana we mention: hypertension, headache, anxiety, nausea, vomiting, tachycardia and convulsions. All these side effects are amplified by its simultaneous use with other drugs with similar activity, such as ephedrine or the same caffeine.
It is very important to avoid abruptly discontinuing the intake of guarana, as lithium intoxication symptoms may arise, with the appearance of side effects such as nausea, diarrhea, muscle weakness, sweating and tremor (guarana increases the renal elimination of lithium ).
The caffeine contained in the extracts of this plant inhibits the synthesis of phosphocreatine and interferes with the plasma transport of the amino acid (creatine). The two supplements should therefore not be taken at the same time.
Following a "chronic intake" the organism develops a sort of addiction and the desired effects become more and more mild.
AVOID TAKING GUARANÀ if you suffer from: diabetes, hypertension, cardiovascular disease, hyperthyroidism, anxiety, insomnia and kidney problems. In any case, given the numerous interactions of guarana with commonly used drugs and with some foods, it is important to consult a doctor to ensure that there are no contraindications to its use.
MORE: Effects, properties and contraindications of guarana "
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