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  • Title: Failure of phenoxybenzamine and pimozide to diminish changes in oxygen consumption and body temperature produced by caffeine.
    Author: Estler CJ.
    Journal: Arch Int Pharmacodyn Ther; 1979 Jun; 239(2):326-30. PubMed ID: 485730.
    Abstract:
    The effects of a dopamine antagonist (pimozide) and an alpha-adrenergic receptor blocking agent (phenoxybenzamine) on caffeine-induced changes in oxygen consumption. body temperature, blood glucose and non-esterified fatty acids (NEFA) were studied in mice. Both drugs had no effect on the increase of the oxygen consumption produced by caffeine. The decline of the body temperature induced by caffeine was not significantly influenced by pimozide, while phenoxybenzamine accentuated the hypothermic effect of caffeine. The results indicate that alpha-adrenergic and dopamine receptors do not play an essential role in the caffeine-induced stimulation of overall metabolism and hypothermia.
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