<prompt> Which of the following is a specific inhibitor of the enzyme alcohol dehydrogenase and is useful in the treatment of methanol poisoningDisulfiramEthylene glycolCalcium leucovorinFomepizole  <response>: Fomepizole 4-methylpyrazole:- It is a specific inhibitor of alcohol dehydrogenase and the drug of choice for methanol poisoning by retarding its metabolism. Dosage:- A loading dose of 15 mgkg i.v. followed by 10 mgkg every 12 hours till serum methanol falls below 20 mgdl, has been found effective and safe. Ref:- kd tripathi; pg num:-395 