My wife has awful morning sickness
Congratulations on the pregnancy!  How far along is she?
About 20 weeks - halfway there!
wow - the morning sickness should get better.  Has she tried ginger tea?
No, I had not heard about that, but it has a long history as a herbal medicine in East Asia
What other herbal medicines are there in East Asia? I love homeopathic things. 
Chinese herbology accounts for the majority of treatments in chinese medicines - there are thousands of treatments