VERY IMPORTANT POINT TO MY OBSERVATION OF DAY: Anonymous said... This is very important, and underscores the statistical reality that "absence of evidence is not evidence of absence." Not only are pharmacies not required to conduct surveillance, in most states they are also not required to report, track or analyze quality complaints or adverse events. All the more problematic because as laypersons (i.e. consumers/patients) we are unable to identify flaws and reject products at the user level. Impossible, even to detect Pyrimethamine, 2380% of its declared concentration, a recall that would have saved the lives of horses http://www.fda.gov/ICECI/EnforcementActions/WarningLetters/2014/ucm410141.htm.