The American Society of Plastic Surgeons in Arlington Heights, Ill., say pills to enlarge women's breasts are unproven and could be dangerous. 

A study, published in Plastic and Reconstructive Surgery, says many breast enhancement pills contain one or more ingredients that can directly interfere with prescribed medications. 

"There are upward of 30 different herbal products advertised widely on television, in magazines and on the Internet alleging to enhance the size of women's breasts; however, there have been no scientifically sound clinical trials proving they work," says Dr. Thomas Lawrence, head of the Plastic Surgery Educational Foundation Device and Technique Assessment Committee. 

"The primary active ingredients found in these supplements can be dangerous when mixed with other medications."

Copyright 2004 by United Press International.