It is generally seen that alcohol, sedatives, and
tranquilizers can increase the drowsiness
of meclizine and
should be avoided while taking it.So pls ask you
r father to abstain from it.Alcohol allergy presents in the form of hives,flushing,swelling,itching,dizziness,vomitings,respiratory difficulty etc. It is usually not the alcohol that produces the allergic reaction to the wine or beer.