Amoxicillin, while generally safe, can cause side effects. Most are mild and temporary, but some require medical attention. Knowing what to watch for is key.
Gastrointestinal Issues
- Diarrhea: This is a common side effect. Drink plenty of fluids to stay hydrated. If diarrhea is severe or bloody, contact your doctor immediately. Nausea and Vomiting: Taking amoxicillin with food can help minimize nausea. If vomiting persists, inform your doctor. Abdominal pain: Mild stomach cramps are possible. If pain is severe, seek medical advice.
Allergic Reactions
Allergic reactions, though rare, can be serious. Watch for:
- Hives or rash: A skin rash is a common sign of allergy. Stop taking the medication and consult a doctor immediately. Swelling of the face, lips, tongue, or throat: This indicates a severe allergic reaction, requiring immediate emergency medical care. Difficulty breathing: This is a life-threatening emergency; call emergency services immediately.
Other Possible Side Effects
Vaginal yeast infection: Amoxicillin can disrupt the normal balance of vaginal bacteria. Changes in urine color: A dark or discolored urine should be reported to your physician. Headache: A mild headache is a possibility. Over-the-counter pain relievers may help.
When to See a Doctor
Contact your doctor if you experience any severe or persistent side effects. This includes severe diarrhea, persistent vomiting, allergic reactions, or any other concerning symptoms. Remember, this list doesn’t include all possible side effects. Always consult your physician or pharmacist for complete information and advice.


