Yeast Arrest suppositories included boric acid, Berberis aquifolium (Oregon Grape) and Calendula officinalis (Calendula).
Boric acid has been used for many years as an antifungal agent and it acidifies the vagina.
Calendula is known in Naturopathic Medicine for its effect on mucosal inflammation and the mucous membrane immune system.
Berberis has been shown to exhibit antimicrobial activity against a variety of fungi.