I had just the opposite!  I have SWCAH and am hydrocortisone, and florinef.  When I was younger (19-21)I could drink as much as I wanted, and rarely got a hangover.  Now that I am older (28) and do it less frequently, I seem to get a hangover almost all of the time, sometimes even after just 3-4 drinks, a headache sets in!  I haven’t drank in a while and still have some time to go because I am pregnant, but I don’t miss those nasty headaches!