 It has a duration of action in the range of 5 to 9 hours and doses typically start at 5 mg .The drug is most commonly taken orally as an elixir, tablet, or capsule, although rectal and subcutaneous administration has the same advantages with hydrocodone as would taking a tablet or powder or a liquid concentrate buccally or sublingually.Thebacon is generated by the esterification product of the enol tautomer of hydrocodone (dihydrocodeineone) with acetic anhydride.