DONT DRINK ANY ALCOHOL AT ALL!!!!!!! Please don't. Not sure whether the guidelines have changed in the last few years, but when I've taken it that has always been the first big thing that the doctors have said.
And, obviously, make sure there is absolutely no chance of getting pregnant whilst on it and for 6(?) months afterwards. [stand to be corrected on the period of time]
It's a shag, it's very strong, but it can be brilliant for the conditions it is used for. Lots of visits, blood tests etc. And it takes time to take effect. I had a weekly dose for 4 weeks at a time, I then had to see the consultant to get my next 4 weeks. They wouldn't let me have any more than that in my possession. Oh, and I had to "pass" the fortnightly blood tests (or is it weekly?!) in order to get my next batch.
I had not been told I could not touch it, that is new to me.
I hate it when I have to take it. Have taken on and off through my life from 14 yo to most recently, 3 years ago at 37yo. I took it for psoriasis too, with mixed results. Some courses, brilliant. Others, less effective. But of course, there are so many other factors with psoriasis and medical treatment alone is not the answer.
Good luck.
Mine was in tablet form. Extraordinary that such tiny tablets in a small dose can have such an effect on the body.