Hi
You can take :-
:-Omeprazole cap empty stomach
:-metronidazole tablet 400 mg BD ( after breakfast and dinner)
:- gasex 2 tablet tds ( after breakfast ,lunch, dinner,)
Or you can take PCM for travel sickness and headache- ( SOS) one tablet.
Avoid :- tea and garm tasir food
You can eat:- mungi ki dal,khichdi,curd,loki ki sabji or tori ki sabji
Take these medicine for 3 days .further treatment consult here
Next Steps
ayurvedic treatment for ibs,anxiety any query consult here