Potassium bromide
Overview
Potassium bromide is a chemical element with the symbol Br, an atomic number of 35, and an atomic mass of 79.904. It is in the halogen element group. The element was isolated independently by two chemists, Carl Jacob Löwig and Antoine Jerome Balard, in 1825–1826...

) is a salt, widely used as an anticonvulsant
Anticonvulsant
The anticonvulsants are a diverse group of pharmaceuticals used in the treatment of epileptic seizures. Anticonvulsants are also increasingly being used in the treatment of bipolar disorder, since many seem to act as mood stabilizers, and in the treatment of neuropathic pain. The goal of an...

 and a sedative
Sedative
A sedative or tranquilizer is a substance that induces sedation by reducing irritability or excitement....

 in the late 19th and early 20th centuries, with over-the-counter use extending to 1975 in the United States.
 
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