Got hives from amoxicillin allergy - do i need to do anything?

Take antihistamine: If you are still reacting take an antihistamine. You should not take it again.

Tell your doctor: Drug reactions such as hives may represent an allergic reaction to a medication, or sometimes a cross reaction to a virus. In any case, you should discuss this with your health care provider to add this medication to your list of potential allergies.