To my wife's experience, very quicly controled her symptoms and improved her general condition, around 2-3 weeks?--remember: she stopped medication methotraxate because of the liver toxic side-effect.
So, it's very effective and strong theraputic effect.
No mention on it controindicated to pregnant women, but consult your doc first!!!
check the web-site linked in my post which gives very detailed infomation already.
firstly, ask your rheumologist doc to approve and prescribe you this medication, when she/he does, she/he will tell you all detailed info, too.
good luck.
dok