The present invention relates to a novel process to manufacture a nutraceutical formulation of amaranth, made from amaranth whole seeds. The nutraceutical formulation of amaranth obtained by the present invention has unique characteristics for addressing problems of great relevance in the priority field of public health, which significantly affects people in general, that is to say, the use in treating human behavioral disorders such as depression, stress, anxiety, and extreme cases like schizophrenia and bipolar disorder
