Ive been seeing a pain management dr for years and...

Ive been seeing a pain management dr for years and taking the same meds. This medicine is awful at first it made me very moody with bad heartburn. I just refilled my meds and after taking one I blacked out. Never in my life have I felt this way. This started when Walgreens changed the generic brand. Anybody else felt something like this???
Im posting just in case something bad happens to me. Walgreen's and Tris dont care for anyone but there pockets!!
The drs don't care to help either
Anybody know how I can get these pills tested ??????
Be careful