The present disclosure relates to the field of marine algal pharmacoactive nutrient. The present disclosure envisages a pharmacoactive nutrient medium and a process for preparation of the same. Initially, predetermined amounts of water and live marine algae are added in a reaction vessel followed by mixing to form an aqueous slurry. This slurry is then heated to a predetermined temperature for a predetermined time to form a first mixture and cooled till it attains a temperature of 25 to 30 °C to obtain a cooled mixture, which is then subjected to centrifugation until the cooled mixture separates into a supernatant and a residue. The supernatant is then separated from the residue and is concentrated to 1/4th of its volume to obtain the concentrate of pharmacoactive nutrient medium.