For temporary relief from acidity and nausea, you can take an over-the-counter antacid or an H2 blocker (like Famotidine). For the vomiting sensation, medications like Ondansetron or Domperidone are highly effective but typically require a prescription. Please avoid spicy, oily, or acidic foods, and sip on water or an oral rehydration solution (ORS) to stay hydrated. Since these symptoms can stem from various causes like gastritis or food poisoning, I strongly recommend consulting a healthcare professional for an accurate diagnosis and appropriate prescription. Seek urgent care if you experience severe abdominal pain or blood in your vomit.

For acidity and gas, over-the-counter antacids or H2 blockers (like famotidine) can provide temporary relief, while simethicone helps ease bloating. However, experiencing both upper and lower abdominal pain could indicate conditions ranging from severe indigestion and IBS to infections. Because lower abdominal pain requires careful evaluation to rule out serious issues like appendicitis, I strongly advise against self-medicating with strong painkillers, which can mask symptoms. Please consult a doctor for a proper diagnosis and tailored prescription. Seek immediate emergency care if you develop severe pain, fever, persistent vomiting, or blood in your stool.