system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
In which of the following poisoning is dimercaprol (BAL) contraindicated?
assistant
The correct answer is  Dimercaprol will increase the excretion of cadmium, there is a concomitant increase in renal cadmium concentration, so that its use in case of cadmium toxicity is to be avoided. Dimercaprol also enhances the toxicity of selenium and tellurium, so it is not to be used to remove these elements from the body. Ref: Gunnar Nordberg (2007), Chapter 15, "DIagnosis and Treatment of Metal Poisoning", In the book, "Handbook on The Toxicology of Metals", USA, Elsevier Publications, Page 313 ; KD Tripathy, 4th Edition, Page 873