The 4th International Current Breakthrough in Pharmacy (ICB-Pharma) 2021 implements a peer-review policy of single-blind review, where each paper will be evaluated and reviewed in layers. The proceedings editor will evaluate the submitted paper to determine its suitability with the conference focus and scope. Once the paper is declared accepted by the committee, it is sent to two independent expert reviewers. Their role is to review and recommend whether the paper is suitable enough to be published by the Atlantis Press. After going through all these processes and declared recommendations by reviewers, the paper can be submitted to Atlantis Press for publication.