If you check the leaflets that come with the prescriptions there is usually advice on there.
I used to be quite a heavy drinker of an evening downing near enough 1/2 a 75cl botttle of dark rum.
I went on holiday just after being dx and although not going mad on the drink only have 2 or 3 glasses of wine per day, after a week I noticed a weakness in my left hand that left me unable to put a fork in my food.
Which got me really paranoid people could tell, we came home and I stayed off the wine and everything else and two weeks later my strength returned in my hand.
Since then I have found if I am strict with myself I can have no more than 4 in one night over the Friday and Saturday and that is with a spirit single measure and topped up with lemonade or Pepsi.
Any more cancels out the meds in my system. Hope this helps. BB xx