<prompt> Addition of which of the following agent can help in elimination of 15-20 tablets of 10 mg dextroamphetamine -AcetazolamideNH4 CIPenicillamineNa HCO3  <response>: Ans. is b i.e., NH4CI Acidification of urine o Basic drugs are more ionized at acidic pH. So, acidification of urine should be done in poisoning of these drugs. o Examples of such basic drugs are morphine, amphetamine, dexfenfluramine. o Acidification of urine is done by iv infusion of arginine hydrochloride followed by ammonium chloride NH4CI by mouth. 