Yeah, my question is:

Every time I take narcotics and/or xanax or it seems like any depressants or combination, my feet and legs swell some and It totally goes away after I quite for a few days. I don't think I'm allergic but I'm somewhat overweight and about 4 years ago I took methadone and drank a few beers because it made me nervous and that stuff made my legs have allot of swelling. I know for a fact it is from the pills and possibility because I am heavier now then I used to be but then when I stop,they get skinny as usual.. What is this ? I figured it was just slowing my system down to the point of water retention. Oh yeah, it doesn't usually happen unless I abuse narcotics for 3 -4 days, Thank you.