This section is from the book "Materia Medica And Therapeutics Inorganic Substances", by Charles D. F. Phillips. Also available from Amazon: Materia medica and therapeutics.
In cases of tenesmus, whether of the bladder or rectum, bromides will often be found useful. Hammond recommends bromide of camphor (British Medical Journal, i., 1877), and 1/2-dr. doses of bromide of potassium have given relief to a severe case of rectal spasm when opium, belladonna, and instrumental interference all had failed (Lancet, ii., 1873, p. 45G).
 
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