<prompt> In pseudocholinesterase deficiency, drug to be used cautiously isBarbiturateSuccinylcholineHalothaneGallamine  <response>: Pseudocholinesterase deficiency is a rare condition that makes you sensitive to ceain muscle relaxants -succinylcholine or mivacurium -- used during anesthesia. The drugs are designed to briefly relax your muscles during a medical procedure. 