Establishing a relationship of causality between the medications received and the events occurred utilizing causality assessment scale is much needed to reduce the occurrence of Adverse Drug Reactions (ADRs) and to prevent exposure of patients towards additional drug hazards. Causality assessment can be defined as the determination of chance, whether a selected intervention is the root cause of the adverse event observed. The causality assessment is the responsibility of either a single expert or an established committee. As it is a common phenomenon of variable perception of knowledge and experience by each expert, there is a high possibility of disagreement and inter-individual variability on assessment. Many of the causality assessment methods have their advantages and disadvantages. However, no single scale has been adopted as standardized and considered for uniform acceptance.
Pharmacovigilante's (PVLs) are highly trained, extra committed, dedicated professionals acting as the main link between patients and other healthcare professionals for better outcome in promoting safety of drugs. The process of drug safety monitoring and its outcomes will not only improve patient's quality of life, but will also help in bringing changes in policies related to healthcare economics and other issues of national importance. National and regional Pharmacovigilance (PV) systems are well-adapted bodies, attuned to the intricate collection and analysis of ADR data that leads to timely alerts and interventions to protect population health. The adverse events reported by PVLs to PV system will potentially benefit to the community due to their proximity to both the population and public health practitioners. This article overviews the functions of PVLs in the context of their roles and responsibilities in the Pharma-covigilance Programme of India working in an adverse drug reaction monitoring centre (AMCs) mainly focusing on promotional activities of PVPI.
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