The International Conference on Harmonisation (ICH) has defined E2B as the international standard for transmitting medicine adverse event reports. The ICH E2B document includes message standards required for effective transmission of individual case safety reports (ICSR). Eventually, the need for the exchange of high volume of safety information world-wide efficiently and automatically has led to periodic revisions of the E2B document. Since 2001, when E2B(R2) was implemented, there have been many developments in regulatory reporting requirements and pharmacovigilance practices. Recently, the ICH E2B(R3) and M2 Expert Working Groups (EWGs) jointly developed an implementation guide on the standards adopted for electronic transmission of ICSRs. It includes new requirements that will require compliance by product manufacturers (and the organizations that assist them with reporting safety information).