A tincture is prepared from the fresh leaves collected in September; that we employ is imported from Germany. Two native species—the R. Maximum and R. Punctatum possess similar properties, but much milder, and should be tested.
The influence of the Rhododendron on the circulation is very marked. It undoubtedly acts like Veratrum and Aconite, stimulating the circulatory apparatus through the sympathetic, and diminishing the frequency of the pulse by increasing the power of the heart, and removing capillary obstruction. Acting in this way, it has been employed with advantage in rheumatism, gout, syphilis, and some acute diseases. It is claimed to exert an influence upon the reproductive apparatus, being used in orchitis, in suppression of gonorrhoea, and in hydrocele. It has been but little employed in this country, but our native specimens deserve a thorough examination.
Specific Medication and Specific Medicines, 1870, was written by John M. Scudder, M.D.