Unichem Laboratories has entered into a product development, manufacturing and supply agreement with US-based PLIVA Inc, a wholly-owned subsidiary of PLIVA Pharmaceuticals, Zagreb, Croatia.According to a release issued by Unichem to the BSE today, PLIVA will fund certain development activity of the company in exchange for exclusivity to market certain generics under joint label in the US markets. "The agreement initially covers five products, which are in advanced stages of development, but allows for the inclusion of additional products upon mutual agreement," the release added.