Why is Pro-Gest Cream so trusted? Maybe because it's been the leader since 1978. For 35 years, women have relied on Pro-Gest for midlife balance. Our Pro-Gest 4 oz. value-size tube contains a two-month supply. There is 20mg of USP Progesterone per 1/4 teaspoon of Pro-Gest and 450mg of USP Progesterone per ounce. Ingredients include USP Progesterone, Vitamin E, Aloe Vera, Safflower Seed Oil, Sweet Almond Oil. Also, it's paraben-free.