anxiety
"I have been on Alprazolam for 10 years for panic disorder and anxiety.  I am still on the same dosage that I was ten years ago and I am definitely sure that drug companies differ in their drug production.   Whenever I pick up a prescription and the pharmacy tells me it's "just a different company", the red flag goes up.  The oval shaped 1 mg. tablet just does not work as well at the round 1 mg. tablet."