Herbal Hills Spirulina Tablets. Herbal Hills, the most trusted and leading manufacturer in Organic Superfood has been processing the purest form of Organic Spirulina tablet to offer desirable benefits. The dry-form of an extract is processed using highly advanced technology and cultured under the pristine environment to maintain premium-quality standards. This superfood is free from added colours, gluten and destructive chemicals to reach the highest quality bar. Spirulina is a single cell plant from the blue-green algae species and is considered to be a natural source of minerals, beta carotenes, amino-acids, proteins, chlorophyll, antioxidants, B-vitamins, and other nutrients. It helps rejuvenate, energize and revitalize the body and its functions. It may help to boost immunity and protects the vital organs from getting damaged.