It is best to temporarily avoid heavy meals. Once your stomach settles, you can eat small amounts of bland foods like crackers, toast, rice, or bananas. Focus on staying hydrated by taking small, frequent sips of water or clear broths. For medication, over-the-counter options like bismuth subsalicylate can help soothe your stomach, while antihistamines like dimenhydrinate can help if the nausea is related to motion. If your symptoms persist or you cannot keep liquids down, a doctor can prescribe stronger medications like ondansetron. Rest in a quiet, well-ventilated room and avoid strong odours.