▁head ache , ▁n ause a , ▁vom iting , ▁or ▁const ip ation . ▁Psych iat ric ▁dist urban ces ▁( hall uc in ations , ▁ag itation , ▁confusion , ▁de pression , ▁or ▁memory ▁problems ), ▁at ax ia , ▁difficulty ▁breath ing , ▁or ▁slow ▁heart be at ▁could ▁be ▁signs ▁of ▁serious ▁ad verse ▁effects ▁and ▁should ▁be ▁brought ▁to ▁the ▁attention ▁of ▁a ▁doctor ▁immediately . ▁ ▁Ad verse ▁Effect s ▁▁ 1 - 1 0 % ▁ ▁Som n ol ence ▁ ▁< 1 % ▁ ▁| - ▁| ▁▁ ▁Ap nea ▁ ▁Night ▁terror s ▁and ▁sleep ▁dist urban ces ▁ ▁Head ache ▁ ▁D izz iness ▁ ▁Ag itation ▁or ▁nerv ous ness ▁ ▁Conf usion ▁ ▁N ause a ▁ ▁V om iting ▁ ▁Const ip ation ▁ ▁Hall uc in ations ▁| ▁ ▁A tax ia ▁ ▁Br ady card ia ▁ ▁He pat ot ox icity ▁ ▁Hyp ov ent ilation ▁ ▁F ain ting ▁ ▁D iff icult y ▁breath ing ▁or ▁sw allow ing ▁ ▁R ash ▁▁ ▁Psych iat ric ▁disturb ance ▁| } ▁ ▁Con trad ict ions ▁ ▁Those ▁with ▁a ▁hyp ers ens itivity ▁to ▁bar bit ur ates ▁or ▁a ▁history ▁of ▁por phy ria ▁should ▁discuss ▁with ▁a ▁doctor ▁before ▁using ▁but is ol ▁sod ium ▁treatment . ▁ ▁But ab ar b ital ▁has ▁also ▁been ▁shown ▁to ▁interact ▁with ▁some ▁medic ines ; ▁T alk ▁to ▁your ▁doctor ▁if ▁taking ▁Mon