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Details for Patent: 5,256,421

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Details for Patent: 5,256,421

Title: Hormone preparation and method
Abstract:This invention is concerned with a contraceptive formulation and a method of contraception which employs a combination of estrogen and progestin and wherein a short period of relatively dominant estrogenic activity alternates with a short period of relatively dominant progestagenic activity. The invention also concerns a hormonal replacement formulation and method for use in menopausal or castrate women which employs a similar combination of estrogen and progestin.
Inventor(s): Casper; Robert F. (Toronto, CA)
Assignee: Jencap Research Ltd. (Toronto, CA)
Filing Date:Nov 10, 1992
Application Number:07/974,182
Claims:1. A method of treating a female in need of hormone replacement therapy comprising transdermally administering to said female a pharmaceutical regimen arranged in alternating estrogen dominant phases and progestin dominant phases, each phase consisting of from one to four consecutive daily unit doses; wherein the daily unit doses of said estrogen dominant phases contain

(a) an amount of a substance exhibiting estrogen activity sufficient to promote the development of progestin receptors in the endometrium of said female, or

(b) an amount of a substance exhibiting estrogen activity sufficient to promote the development of progestin receptors in the endometrium of said female and an amount of a substance exhibiting progestin activity; and

wherein the daily unit doses of said progestin dominant phases contain an amount of a substance exhibiting estrogen activity and an amount of a substance exhibiting progestin activity sufficient to antagonize the effect of estrogen on the endometrium of said female.

2. A method according to claim 1, wherein the amount of said substance exhibiting progestin activity is alternately increased in the progestin dominant phases to provide daily unit doses exhibiting progestin dominant activity and decreased in the estrogen dominant phases to provide daily unit doses exhibiting estrogen dominant activity.

3. A method of hormone therapy according to claim 1, wherein all of said daily unit doses contain a uniform amount of said substance exhibiting estrogen activity.

4. A method of hormone therapy according to claim 2, wherein all of said daily unit doses contain said substance exhibiting progestin activity.

5. A method of hormone therapy according to claim 1, wherein said substance exhibiting progestin activity is a desogestrel.

6. A method of hormone therapy according to claim 1, comprising administering a series of consecutive daily unit doses arranged in estrogen dominant phases of two daily unit doses each alternating with progestin dominant phases or two daily unit doses each.

7. A method of hormone therapy according to claim 1, comprising administering a series of consecutive daily unit doses arranged in estrogen dominant phases of three daily unit doses each alternating with progestin dominant phases of three daily unit doses each.

8. A method of hormone therapy according to claim 1, comprising administering a series of consecutive daily unit doses arranged in estrogen dominant phases of four daily unit doses each alternating with progestin dominant phases of three daily unit doses each.

9. A method of hormone therapy according to claim 1, comprising administering a series of consecutive daily unit doses arranged in estrogen dominant phases of three daily unit doses each alternating with progestin dominant phases of four daily unit doses each.

10. A method of hormone therapy according to claim 1, wherein the daily unit doses of said estrogen dominant phases are free of substance exhibiting progestin activity.

11. A method according to claim 1, wherein the daily unit doses of said estrogen dominant phases contain an amount of substance exhibiting progestin activity ranging from 0 to an amount which exhibits a progestin activity equivalent to 0.5 mg norethindrone, and the daily unit doses of said progestin dominant phases contain an amount of substance exhibiting progestin activity which exhibits a progestin activity equivalent to from 0.35 to 5 mg norethindrone, the amount of substance exhibiting progestin activity being greater in said progestin dominant phases than in said estrogen dominant phases.
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