J.L.
I didn't take it for morning sickness, but had a very bad experience with B6. I was accidentially taking too much dosage wise (was told by a fertility doctor I was seeing to take two tablets a day along with my regular multivitamin) and within a weeks time woke up unable to walk and in terrible physical pain. I had symptoms similar to Guillain Barre syndrome (sp?). I wound up in an ER but no doctor would say conclusively it was the B6 claiming it is a soluable vitamin and therefore couldn't have been an overdose.
However, at the suggestion of a non-medically trained sales person at a vitamin shop of all places, I stopped taking the supplementsafter they told me about how dangerous it could be, especially for people with a clotting disorder called Factor IV Leiden, and within a week's time I recovered but did develop a serious blood clot. The sales person knew about this rare side affect of B6 and told me to stop taking them immediately and probably saved my life.
I still have some problems with the muscles in my legs, but have regained full mobility. The doctors still refuse to attribute my condition to B6. All I can say is, based on my own experience, stay away from the stuff. It can be deadly. I'm convinced of it.
When I had morning sickness, I was told by my OB to drink ginger tea, ginger ale, or to just steep ginger root in water and drink it. And she was right, it helped. No side effects either.