I wouldn't,goodness knows what your insides will look like.You should have been advised not to drink anything red or orange.I would stick to lemon or lime to be safe.If you can,drink your prep.icey cold,with a straw,so it by passes the taste buds.
Also, make sure the straw is toward the very back of your tongue so you don't have to taste the prep solution. Mine tasted horrible, so the straw was a necessity. It helped tremendously to have it very cold, too.
Which one did u have?