potassium bitartrate

Potassium bitartrate is a potassium acid salt of tartaric acid. It is primarily utilized in the pharmaceutical industry as a component of **Phexxi**, an FDA-approved, non-hormonal contraceptive vaginal gel developed by **Evofem Biosciences**. In this formulation, potassium bitartrate works in conjunction with lactic acid and citric acid to maintain the natural acidic environment of the vagina (pH 3.5 to 4.5). By buffering the vaginal pH even after the introduction of alkaline semen, the gel inhibits sperm motility, thereby preventing pregnancy. Beyond its use in contraception, it is also known as cream of tartar and is widely used in the food industry and as a dietary supplement.

Brand names

Phexxi

Other names

cream of tartarpotassium hydrogen tartratemonopotassium tartrateE336E-336E 336