<Tr> <Td> Xanthines </Td> <Td> caffeine, theophylline, theobromine </Td> <Td> Inhibits reabsorption of Na, increase glomerular filtration rate </Td> <Td> 1 . tubules </Td> </Tr> <P> Chemically, diuretics are a diverse group of compounds that either stimulate or inhibit various hormones that naturally occur in the body to regulate urine production by the kidneys . </P> <P> As a diuretic is any substance that promotes the production of urine, aquaretics that cause the excretion of free water are a sub-class . This includes all the hypotonic aqueous preparations, including pure water, black and green teas, and teas prepared from herbal medications . Any given herbal medication will include a vast range of plant - derived compounds, some of which will be active drugs that may also have independent diuretic action . </P> <P> The main adverse effects of diuretics are hypovolemia, hypokalemia, hyperkalemia, hyponatremia, metabolic alkalosis, metabolic acidosis, and hyperuricemia . </P>

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