why is it legal for a Dr. to hand out narcotics for minor pain?

[pistol1652]

the Dr. was giving my wife promethazine w/codine syrup and hydrocodone. The Dr. gave her the syrup for anxeity and the hydrocodone for headaches. She was able to get all the refills she wanted from the same dr.Some only two days apart. In the last year she received over 80 bottles of cough medicine and over 60 perscriptions of hydrocodone 500 mg of 60 tabs this was all from the same pharmacy as well. I even have the print out of the meds that were picked up. That's how I know how many. How could this be legal? . I just found out about her problem and now she is suffering from withdrawls.