▁sleep ▁maintenance ▁and ▁induction ▁but ab ar b ital ▁sod ium ▁treatment ▁is ▁recommended ▁to ▁be ▁limited ▁to ▁two ▁weeks , ▁after ▁which ▁it ▁begins ▁to ▁lose ▁effic acy . ▁The ▁half ▁life ▁is ▁approximately ▁ 1 0 0 hr s , ▁elimin ated ▁primarily ▁by ▁he p atic ▁mic ros om al ▁en zym es ▁and ▁ex cret ed ▁in ▁the ▁ur ine . ▁ ▁Over d ose ▁& ▁Ab use ▁But ab ar b ital ▁sod ium ▁is ▁a ▁Sch edule ▁III ▁controlled ▁subst ance ▁in ▁the ▁US ▁and ▁Canada ▁due ▁to ▁risk ▁of ▁ab use ▁and ▁dependence . ▁ ▁A ▁ps y cho active ▁subst ance , ▁but ab ar b ital ▁dru gs ▁are ▁often ▁ab used ▁with ▁risk ▁of ▁ac ute ▁into xic ation ▁and ▁add iction . ▁ ▁Bar bit ur ates ▁such ▁as ▁but ab ar b ital ▁are ▁thought ▁to ▁be ▁habit - form ing ▁and ▁add ict ive , ▁and ▁have ▁severe ▁ris ks ▁from ▁withdraw al ▁including ▁death . ▁ ▁Due ▁the ▁high ▁risk ▁of ▁dependence ▁and ▁over d ose , ▁use ▁of ▁but ab ar b ital ▁is ▁highly ▁reg ulated ▁and ▁has ▁become ▁less ▁common ▁in ▁clin ical ▁application . ▁ ▁Side ▁Effect s ▁ ▁Those ▁taking ▁But ab ar b ital ▁are ▁asked ▁to ▁watch ▁out ▁for ▁signs ▁of ▁severe ▁all erg ic ▁reaction , ▁such ▁as ▁sw elling ▁or ▁difficulty ▁breath ing . ▁Less ▁serious ▁side ▁effects ▁include ▁d izz iness ▁or ▁d rows iness , ▁exc itation ,