Yes this med is soooo scary and I questioned ever taking it ,but have been on it for 4 years this year with no adverse reactions (touch wood lol).
My Rheumy put it in perspective when I questioned taking it - that the disease will kill me quicker than this med - so here I am still taking it and finding that it works great for my AS (not for my CD worse luck).
Good luck with your decision Charteaux and pop back in to let us know how you are going.
Take care
Jo