Roseanne Barr apologized Tuesday for making a viciously racist "joke," later excusing herself by saying, "It was 2 in the morning and I was Ambien tweeting." But even Ambien won't stand by Barr, who was likewise rejected by her network, producer, talent agency, and co-stars. The insomnia medication's maker, Sanofi, distanced the product from Barr on Wednesday: People of all races, religions and nationalities work at Sanofi every day to improve the lives of people around the world.