Regeneration Drug. Evolution of a Woman, #10

Charley was the president of a large corporation that developed robotics which included androids. He decided he would like to expand his corporation into other fields. Charley's wife doctors developed a regeneration drug that made people young again. At first the drug was imperfect so the people started aging again. He worked with his wives and was able to perfect the drug so it worked perfectly and the people stayed young.
The problem was the body was young again, but the mind was old so some people had a hard time adjusting. He went ahead with the drug though since it made a lot of money. This brought about problems that his corporation had to solve. Android Wives is the 10th novel in the series Evolution of a Woman.  It has minor romance scenes to enrich the novel.