This article provides an in-depth analysis of undue influence in commercial law, including its definition, types, and application in various scenarios. It also offers expert advice on how to deal with undue influence in commercial transactions. The article covers the legal principles of actual and presumed undue influence, and how they apply in cases of disadvantageous transactions. It also discusses the fiduciary relationships that can lead to undue influence, and how to prove actual undue influence in court. The article is relevant to students of commercial law, legal practitioners, and anyone interested in understanding the legal principles of undue influence.