Posted 11/22/2007 8:55 AM (GMT -6)
If your drug is a "name brand," it is made by the same company all the time unless, of course, the company contracts out some of its manufacturing. But the shape, size and color is always the same and the company that owns the patent does the quality control. It is also more expensive, or a higher co-pay on your insurance.
If the drug is generic, the manufacturer and appearance can change. Pharmacies will buy from the manufacturer with the lowest price, and you pay less. In theory, the drug is still chemically identical. In actual practice, that depends on each individual manufacturer's quality control. But the vast majority of the time generics provide the same drug and a much lower price than brand names.
For instance, sufasalazine is generic. Asacol, Colazal and Pentasa are brand names for drugs in the same family, but each is a bit different from the others. Motrin is brand-name, ibuprofen is generic.
The best way to solve your mystery would be to go back to CVS for your refill and see if the problems clear up.