Although a nitrate, its pharmacological actions resemble those of nitrites such as amyl nitrite, taken internally.
Their pharmacological action is as obscure as their effects in certain diseased conditions are consistently brilliant and unexampled.
There is no evidence that it possesses any pharmacological or therapeutic properties.
Between this and 1880 a museum, a school of agriculture, and a culture garden were added, and since then library, botanical, chemical, and pharmacological laboratories, and a herbarium have been established.
South-west of these buildings, on the other side of the Johannisthal Park, are clustered the medical institutes and hospitals of the university - the infirmary, clinical and other hospitals, the physico-chemical institute, pathological institute, physiological institute, ophthalmic hospital, pharmacological institute, the schools of anatomy, the chemical laboratory, the zoological institute, the physicomineralogical institute, the botanical garden and also the veterinary schools, deaf and dumb asylum, agricultural college and astronomical observatory.
The study of pharmacological actions was at first almost entirely confined to those of remedial agents, and especially to the remedies in the different national pharmacopoeias, but in many cases it has now been extended to substances which are not used for curative purposes.
Since Magendie's time numerous papers dealing with pharmacological subjects have appeared in the Journal of Anatomy and Physiology, the Journal of Physiology, Virchow's Archiv, and the principal medical periodicals of all countries.
Bodies which have a close resemblance in their chemical constitution exhibit a similar resemblance in their pharmacological action, and as the constitution of the substance becomes modified chemically so does its action pharmacologically.
Speaking in the widest sense, every substance has an action on living protoplasm, but for convenience pharmacological substances have come to be limited to those which are used as drugs, or which have a distinct action upon the animal organism.
The classification of substances having pharmacological actions presents so many difficulties that no satisfactory or universally adopted method has yet been proposed.
The ideal method of grouping pharmacological substances would be in reference to their chemical action on living protoplasm, but as yet our knowledge is too scanty for this.
The pharmacological action of hydrogen peroxide (H202), potassium permanganate, powdered charcoal and some other oxidizing agents depends on the readiness with which they give up oxygen.
- This embraces a very large number of important pharmacological substances, which differ a good deal in the details of their action, but they all act upon muscle and nerve tissue.
In a resume' it is manifestly impossible to pass in review every pharmacological substance, and we shall therefore confine ourselves to those groups which are of practical importance.