Tampax is a brand of tampon from Procter & Gamble. It was originally the name of an independent company for over 50 years, based in Palmer, Massachusetts (with headquarters in New York), and the product itself. Renamed Tambrands, Inc. in 1984, P&G purchased it in 1997. It was noted for decades as having the dominant share of the tampon market, challenged in the USA mostly by Playtex, J&J and Kimberly-Clark. P&G also competed against Tampax with the failed product from the 1970s called "Rely".
During World War II, Tampax produced large quantities of wound dressings for the military. It was noted for having a mostly, almost exclusively, female workforce for much of its history. Financially, while still independent, it carried no debt for most of its corporate lifetime and ranked ~#4 on the Fortune 500 list for return on equity. The original product was designed from the start as flushable and biodegradeable.