This section is from the book "The Materia Medica Of The Hindus", by Udoy Chand Dutt. Also available from Amazon: The Materia Medica Of The Hindus.
Sankha visha.
Dάrumuch.
Sάmbala kshάra.
White Arsenic is sold in the bazars under the names of Sunka bish, Suffed sambul and Darumuch. It is purified by being soaked in lemon juice or the juice of the plantain tree. It is chiefly used in fever, for which it is now preferred to the other compounds of arsenic, and is employed alone as also in a great variety of combinations. The following are a few illustrations.
Jvara brahmάstra.1 Take of white arsenic two tolas, soak it in cow's urine for three days, and afterwards in the juice of
Susruta. kalpasthana. chapter II.

Celsia Coromandeliana (kokasima), for one day, and then wash in cold water. Take a small quantity, the weight of a mustard, (about one-ninth of a grain), and administer within a lump of sugar in intermittent fever before the paroxysm comes on. Thus taken for three days, it cures recent and chronic fevers, ague and remittent fever. It is called Jvara brahmastra or the weapon which infalliably destroys fever.
Dάrubrahma rasa.1 Take of white arsenic, cinnabar, datura seeds and long pepper, equal parts, and make into four-grain pills with lemon juice. They are given with the juice of tulsi (leaves of Ocimum sanctum) in remittent fever with shivering, incoherent speech or wandering, profuse perspiration or much heat of body, difficult breathing, etc. The dose of arsenic in this medicine is very large and may induce unpleasant symptoms.
Chandesvara rasa.2 Take of mercury, sulphur, aconite, prepared copper and white arsenic, equal parts, rub together with the juice of fresh ginger for six hours, then soak in ginger-juice and dry, successively for seven days. Afterwards soak in the juice of Vitex nigundo (nirgundi) for seven days, make into pills about a grain each, and administer with the juice of fresh ginger. Along with this medicine, inunction with oil, cold bathing and nourishing animal food should be used.
 
Continue to: