Hello You mentioned that you were a patient of typhoid , malaria and amoebic ( amoeba) . Doctor advised oflonida ( ofloxacin + ornidazle ) for dual purposes , both for typhoid and amoeba. As these both drugs produces hyper acidity , nausea , vomiting , anorexia ,abdominal discomfort . When such type of patient visit my clinic I advise them to take antacid ( having oxetacaine is the best ) 2-3 TSF on empty stomach for 4-5 days. But if symptoms are severe ( as may be in your case ) take pantaloc-d one or two in day for 7-10 days . Avoid pizza, burger , fried food , red chilles , drinks with caffeine in them (excessive tea) . You will get relief within a short period. Hope this will help you. Good luck.