<prompt> Drug which does not interfere with folic acid metabolism?PhenytoinGabapentinPhenobarbitonePrimidone  <response>: Ans. is b i.e., Gabapentin Drugs causing folate deficiency Interference with folic acid absorption Phenytoin Sulfasalazine Cotrimoxazole Inhibition of dihydrofolate reductase: Methotrexate Trimethoprim Triamterene Pentamidine Pyrimethamine Primidone Phenobarbitone Impair folate metabolism Alcohol 