Last Updated on January 7, 2021
If you started having a fever right after taking the antibiotics, then you might be having an allergic reaction that led to it. The fever can be caused by an antibiotic, especially sulfonamide, β-lactam antibiotics, minocycline, and cephalexin.
More likely, the fever might get away soon, but if it is too strong, then you have to see your doctor to change the prescription.