Since I am not in the medical field, the only thing I can do is provide you with links to recent articles about the safety of Tykerb. I wish you and your daughter all the best.
http://www.cbsnews.com/stories/2007/03/13/health/main2564600.shtml
http://www.drugs.com/tykerb.html
http://www.rxlist.com/cgi/generic/tykerb_pi.htm
