My friend was buying a watch (apparently a branded expensive one) and while he was still wondering should he go ahead and buy it? the shopkeeper told him "sir it has international guarantee which is valid for next 2 years " And my friend instantly bought it. So the key word here was "valid". Anything that is valid and sold to us we buy it.
In pharmacovigilance (PV) as well, the rule holds true, a valid reaction, Adverse drug reaction(ADR) or AE (adverse event ) should only be considered while talking about drug safety, otherwise we might end up with no drugs which are safe, because we would have thousands of adverse reactions collected for each drug. So what is valid adverse drug reaction or event? The criteria that applies everywhere for considering valid and invalid ADR is, all reports must have an identifiable patient, reporter, suspect drug and suspect reaction in order to be…
