i have gone through your query and can understand your health concern. the allergic reaction can be due to amoxicillin only because acetaminophen and codeine will not cause any allergic reaction. i suggest you to stop amoxicillin. you can use any of the cephalosporin instead of amoxicillin. for allergic reaction i suggest some antihistamine drug twice daily for three days. amoxicillin and other drugs of this group are very common to cause allergic reactions. as you have mentioned that you never developed such reaction in the past and this is the first time i tell you that it can happen. i suggest you not to take amoxicillin in the future. for further information consult an allergy specialist online --> <link>
can allergic reaction occur due to tylenol 3 or amoxicillin?