I went to a dermatologist recently.. he prescribed few antibiotics (azithromycin) and Benzoyl peroxide cream.
These antibiotics n cream worked .but I can't get rid of those awful red spots.
These red spots have been there for very long time.black spots seem to perish in few weeks or months.But those red spots are not going away.
The pimples r not gone yet completely.. can u people recommend anything for both pimples as well as red/black spots ?

I would recommend that you call your dermatologist since you are using prescriptions. Since they've already seen you, perhaps they will call something into the pharmacy without an additional visit, or just tell you over the phone what you can use that's over the counter.

Ask your doctor about taking zinc gluconate.