Hi there! They say that drinking too much can cause a persons liver to scar up to much as to be unusable in the end. A person can get esophageal varisces and bleed to death from it. When blackouts start occurring millions of brain cells are said to be destroyed at each occurence. Nyquil also has tylenol in it which is not exactly good for the liver and if he uses the night type it also includes alcohol which adds to the liver burden. I would ask him if he wants to have a good body later but I would try find a tactful way to do it. Tact is not in my expertise.