Most drug recalls are about a lot, not the medicine
A drug recall almost always concerns specific lots: a batch that failed a stability or dissolution test, a labeling mix-up, or a contamination risk at one plant. The same medicine from another lot, or from another manufacturer, is not part of it.
The lot number and the expiry date are printed on the bottle or carton, often embossed on the crimp of a tube or the flap of a box. On a pharmacy vial the lot may not be shown at all; the pharmacy that filled the prescription can tell which lot you received.
Why you should not simply stop
Stopping a medicine for blood pressure, seizures, mental health or blood thinning can be more dangerous than the defect that caused the recall. Many recalls are Class II or III, where the risk from the affected lot is low. Call the pharmacy: they can check the lot, replace the product and tell you whether to keep taking it meanwhile.
FDA requires this notice on data from openFDA, and it applies here: do not rely on it to make decisions regarding medical care.
Reading the reason
The reasons are written in regulatory shorthand. “Failed stability specifications” means a sample of the lot no longer met its quality limits before the expiry date. “Lack of assurance of sterility” means the process could not guarantee a sterile product, which matters most for injections and eye drops. “CGMP deviations” means the plant did not follow required manufacturing practice. This site shows the reason as FDA wrote it.