Dr. Hahnemann says, all medicaments given in large doses, make disagreeable sensibilities of healthy persons. All medicaments produce two quite opposite states in the human body, the primary action which manifests itself when the remedy begins to operate and the secondary which appears only after the lapse of several hours, when the primary action has ceased.
Caffeine is the world’s most widely consumed psychoactive substance. Hahnemann recommends coffee especially for cases whose symptoms have been very persistent unnatural sleeplessness, irritability and loss of appetite, thirst, frequent painless discharge of soft excreta and in post- parturition pains.
According to Hahnemann, the wise use of the medicinal beverage which is misused by millions of people to their own disadvantage and only known by the few, who use it in the right place as a very wholesome remedy.
After many observation Hahnemann says, no more powerful antidote to narcotics than strong coffee, the ill effect of a too emotional excitement is removed by a drink of coffee, which would also be a capable of producing it, so the coffee should be used as the medicinal beverage, not as refresher.