Homeopathic Materia Medica by Farrington
( )The drugs composing this group of remedies present great similarities in their respective symptomatologies. The first three remedies on the above list are continually in use, even in an average practice. There is scarcely a symptom of one of them which cannot be found almost the same in one of the others. . The resemblances are, in fact, perplexingly similar. I have arranged the remedies on the board, not botanically, but rather according to their medicinal relations. For instance, the first four on the list attack prominently the brain, and have narcotic properties; they are, therefore, placed in one group.
Then we have Tabacum, which also has narcotic properties, but which acts also on other parts of the body than the brain. Then next comes DULCAMARA, which contains a small quantity of Solanine, and is only slightly narcotic. A large quantity of this drug would be required to develop the soporific effects which can be obtained from Stramonium or Hyoscyamus. Then lastly we have CAPSICUM, which is decidedly irritant or acrid. Placed on the skin it acts as a blister or counter irritant. It has possibly some narcotic effects, but it differs almost entirely from the other members of the group. The resemblances between the first three named are so great, and are so nearly "IDEM," that it is not well to follow one with the other. There are some symptoms of Belladonna and Hyoscyamus which are opposite, not so much in the phraseology by which they are expressed, for they may read almost exactly alike; but they are results acting in opposite directions, consequently they sometimes serve to antidote each other. Especially is this true of the skin symptoms.