Prefest Dosage

Generic name: ESTRADIOL 1mg; ESTRADIOL 1mg, NORGESTIMATE 0.09mg
Dosage form: tablets
Drug class: Sex hormone combinations

Medically reviewed by Drugs.com. Last updated on Feb 7, 2024.

Use of estrogen, alone or in combination with a progestin, should be with the lowest effective dose and for the shortest duration consistent with treatment goals and risks for the individual woman. Patients should be reevaluated periodically as clinically appropriate (e.g., 3-month to 6-month intervals) to determine if treatment is still necessary (See BOXED WARNINGS and WARNINGS). For women who have a uterus, adequate diagnostic measures, such as endometrial sampling, when indicated, should be undertaken to rule out malignancy in cases of undiagnosed persistent or recurring abnormal vaginal bleeding.

PREFEST regimen consists of the daily administration of a single tablet containing 1 mg estradiol (peach color) for three days followed by a single tablet of 1 mg estradiol combined with 0.09 mg norgestimate (white color) for three days. This regimen is repeated continuously without interruption.

For treatment of moderate to severe vasomotor symptoms and vulvar and vaginal atrophy associated with menopause, the patient should start with the first tablet in the first row, and place the weekday schedule sticker which starts with the weekday of first tablet intake in the appropriate space. After all tablets from the blister card have been used, the first tablet from a new blister card should be taken on the following day.
This dose may not be the lowest effective dose for treatment of vasomotor symptoms and vulvar and vaginal atrophy.
Patients should be re-evaluated at three-month to six-month intervals to determine if treatment for symptoms is still necessary.
For prevention of postmenopausal osteoporosis, the patient should start with the first tablet in the first row, and place the weekday schedule sticker which starts with the weekday of first tablet intake in the appropriate space. After all tablets from the blister card have been used, the first tablet from a new blister card should be taken on the following day.
This dose may not be the lowest effective dose for the prevention of postmenopausal osteoporosis.

Missed Tablets:

If a tablet is missed for one or more days, therapy should be resumed with the next available tablet. The patient should continue to take only one tablet each day in sequence.

The lowest effective dose of PREFEST has not been determined.