Hello, My Mum Of 60 Age By Mistake Took 5

Hello, my mum of 60 age by mistake took 5 anxit 0.25mg at once. Will this affect her inthe any way? She is ok but very drowsy. Am worried now! Should I call for any emergency help or take her to a doctor immediately? If someone online please advise urgently. Sometimes she take a one or two rarerly when she finds difficulty in sleeping due to new atmosphere or travel. Thanks