Anionic surfactants are also known as amphiphilic surfactants because they contain both polarand non-polar functional chemical groups in their structures (e.g., sodium lauryl sulphate (SLS)).Other surfactants include cationic surfactants that are commonly used as disinfectants (e.g., cetrimide),non-ionic surfactants (e.g., alkyl betaine) and amphoteric/zwitterionic surfactants (e.g., polysorbates).Surfactants most commonly used in solid oral dosage forms are SLS, poloxamers and d-α-tocopherolpolyethylene glycol succinate [39,43–45]