Amoxicillin is an antibiotic that can cause several side effects, most of which are mild but some can be serious. Common side effects include diarrhea, stomach upset, headache, abnormal taste, skin rash, and vaginal yeast infections. Less common but more serious side effects include allergic reactions such as itching, hives, swelling of the face or tongue, breathing difficulties, severe skin reactions like blistering or peeling, dizziness, trouble sleeping, seizures, unusual bleeding or bruising, and yellowing of the eyes or skin. Serious allergic reactions (anaphylaxis) require immediate medical attention. Some side effects, such as antibiotic-associated diarrhea caused by Clostridioides difficile, may occur even up to two months after stopping the medication. It is important to seek medical help if severe symptoms or allergic reactions appear.
Common Side Effects
- Diarrhea
- Stomach upset
- Headache
- Abnormal taste
- Skin rash
- Vaginal yeast infection
Serious Side Effects (Seek Immediate Help)
- Swelling of face, lips, tongue, or throat
- Difficulty breathing or swallowing
- Severe skin reactions (peeling, blistering, painful rash)
- Dark urine or yellowing of skin/eyes (jaundice)
- Unusual bleeding or bruising
- Severe diarrhea with blood or mucus
- Signs of a serious allergic reaction (anaphylaxis)
Other Considerations
- Allergic reactions occur in about 1 in 10 people.
- Some reactions may present days to weeks after treatment.
- Certain side effects like antibiotic-associated diarrhea can happen even after finishing the medication.
- If any severe symptoms or allergic reactions occur, emergency medical treatment is necessary.
This summary should help in understanding the typical and severe side effects of amoxicillin.
