Like MickeyX stated, though, even if you have a card, you are not exempt from p!ss tests for employment, and if you pee "dirty" for these tests, your card etc is not going to work as an excuse.
I had seriously contemplated using it for my ongoing gastric problems, but because of the above and how important my work and school are for me, I chose not to. I am now occasionally taking ranitidine- "occasionally" meaning for a week or so every month (or less often) even though ideally I should be on a "maintenance" amount of 150mg once a day. Would I find it easier to "remember" to light up once a night after school/work? Probably. Would it be more fun? Sure would! but I get my ranitidine for $4/month at Fred Meyer and I can't beat that.