Numerous natural compounds present in both macro- and microalgae are thought to offer therapeutic potential, providing benefits such as antifungal, antioxidant, and antibacterial properties. These characteristics indicate that algae could be integral to the development of effective pharmaceuticals for human health. Microalgae, in particular, are known for producing a wide variety of molecules valuable to the pharmaceutical sector. Several algae species can synthesize an extensive range of pharmaceutical compounds applicable in human medicine. The cell walls of algae mainly consist of various carbohydrates, making algal biomass an optimal source of biologically active substances within the pharmaceutical industry. Additionally, its high fatty acid content, even prior to lipid extraction, enhances its suitability as a bioactive component. Algal biomass is also more energy-efficient than biofuels such as biodiesel, as it can be utilized in its wet form, removing the need for expensive drying processes. This makes algae both a cost-effective and convenient alternative. This chapter seeks to underscore the significance of pharmaceutical products obtained from algal biomass and examine their role in driving the progress of the pharmaceutical industry.