The three Sopharma AD factories - the one in Kazanlak, the Tablet production and Ampoule production in Sofia - have Nivalin in common, one of the strongest Sopharma products. Nivalin is sold in more than 10 countries outside Bulgaria, making it one of the most famous Sopharma products.  It increases the intensity of the reflex centers of the spinal cord, medulla oblongata and cerebral cortex, thus influences all links of the reflex arc.