serious side effects

A leading group of pediatricians said in a statement published September 19 that codeine is not safe for children and should not be used to relieve pain or coughs. [1]
The guidance nearly mirrors a January 2016 Food and Drug Administration (FDA) warning that codeine should not be given to children and most teens.

On July 26, the U.S. Food and Drug Administration (FDA) bolstered the warnings concerning a certain class of antibiotics, called fluoroquinolones, saying they’re too strong for bronchitis, sinus infections, and simple urinary tract infections.