In mice the activation caused by morphine was antagonized by previous treatment with lithium and was potentiated by previous treatment with rubidium. Other antimanic drugs antagonized the morphine activation as well. The effect of rubidium was similar to that of the antidepressant drugs imipramine and pargyline. Rubidium may merit clinical evaluation as an antidepressant agent in man.
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Carroll et al. (1971) studied this question.
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