What is the reason why no nausea medicine or ginger ale, crackers, motion sick bands not help with nausea? i think i have stomach bug. it's going aroun

Depends on cause: No herb or medicine works all the time. Ginger often helps nausea, but it may take a higher dose than you get in ginger ale- you can try ginger tea with lemon & honey. Motion sick bands often help morning sickness/motion sickness. A stomach virus or food poisoning may cause nausea that does not respond to these treatments. See http://www.Livestrong.Com/article/109653-homeopathic-remedies-nausea/.