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The role and uses of caffeine

Published: 2026-04-03 Author: World Gafei

Last Updated: 2026/04/03, 1, small doses (50-200mg) can make drowsiness disappear, fatigue reduced, spirit excited, thinking agile; larger doses can directly excite the respiratory center and vascular motor center of the medulla oblongata, so that breathing speeds up and deepens, blood pressure increases; toxic doses can excite the spinal cord. It also relaxes bronchial smoothing.

1. Low dose (50-200mg) can make drowsiness disappear, fatigue relieved, spirits refreshed and thinking agile.

A larger dose can directly stimulate the respiratory center and vasomotor center of the medulla oblongata, accelerate and deepen respiration and increase blood pressure.

The toxic dose can excite the spinal cord. It can also dilate bronchial smooth muscle, diuresis and stimulate gastrointestinal secretion.

The central excitation and relaxation of bronchial smooth muscle of caffeine may be related to its blocking of adenosine receptor.

2. It is mainly used to fight against the state of central inhibition, and it can also be used to treat some migraines.

3. Excessive dosage can cause convulsion.

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