Can 2000mg of amoxicillin cause breathing difficulties?

While it is not common, some people may experience breathing difficulties after taking 2000mg of amoxicillin. This is because the antibiotic can cause an allergic reaction in some people. The symptoms of an allergic reaction can range from mild (such as a rash or hives) to severe (such as difficulty breathing or swelling of the face, lips, or tongue). If you experience any difficulties after taking amoxicillin, it is important to seek medical help immediately. While most people will not have any problems after taking the antibiotic, it is always better to be safe than sorry.