<prompt> Isoniazide is metabolized by -AcetylationOxidationReductionHydrolysis  <response>: Ans. is a i.e., Acetylation o Isoniazid is extensively metabolized in liver most important pathway being N - acetylation by NAT 2. The acetylated metabolite is excreted in urine.Drugs metabolized bv acetylationo Sulfonamides including dapsono INHo Procainamideo Hydralazineo PASo Clonazepam given in 6the 