Self administrable anti-fertility composition
First Claim
1. A self-administrable antifertility composition comprising a progestational compound for topical non-systemic application to the cervix in an amount effective for alteration of cervical mucous secretions in a manner unfavorable to fertility and a non-rigid pharmaceutically acceptable viscous gel, cream, foam or effervescent type suppository vehicle which is sufficiently viscous to keep the progestational compound in effective contact with the cervical tissue for sufficient time to bring about the desired modification of the cervical mucous secretions when formulated for self-administrable use, care being taken that the carrier is not so viscous that administration becomes difficult and the contact time required between the reactive progestational ingredient and the cervical tissue becomes overly long for the effective dose to be administered, said vehicle excluding solid or rigid type ampoules or capsules as well as liquid carriers and ordinary suppositories which have an undesirable propensity to flow and run out of the vagina, said progestational compound being contained in said vehicle in a concentration selected according to the progestational compound and the dosage quantity and schedule so as to apply to the cervix substantially only a non-systemic quantity of the progestational compound to produce substantially only a local effect without changing in significant measure the amount of said compound in the blood stream of the user and thereby without generating side effects resulting from increased blood levels in the user of said progestational compound.
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Abstract
A self-administrable anti-fertility composition comprising a progestational compound in an amount effective for alteration of cervical mucus secretions in a manner unfavorable to fertility without systemic absorption and a pharmaceutically acceptable vehicle. A typical composition is a foamable aqueous emulsion containing an anionic surfactant, propylene glycol and an amount of progesterone effective to provide a dose of from about 10 micrograms to about 5 milligrams. The composition may be foamed by dispensing with a syringe or by dispensing from an aerosol container.
195 Citations
16 Claims
- 1. A self-administrable antifertility composition comprising a progestational compound for topical non-systemic application to the cervix in an amount effective for alteration of cervical mucous secretions in a manner unfavorable to fertility and a non-rigid pharmaceutically acceptable viscous gel, cream, foam or effervescent type suppository vehicle which is sufficiently viscous to keep the progestational compound in effective contact with the cervical tissue for sufficient time to bring about the desired modification of the cervical mucous secretions when formulated for self-administrable use, care being taken that the carrier is not so viscous that administration becomes difficult and the contact time required between the reactive progestational ingredient and the cervical tissue becomes overly long for the effective dose to be administered, said vehicle excluding solid or rigid type ampoules or capsules as well as liquid carriers and ordinary suppositories which have an undesirable propensity to flow and run out of the vagina, said progestational compound being contained in said vehicle in a concentration selected according to the progestational compound and the dosage quantity and schedule so as to apply to the cervix substantially only a non-systemic quantity of the progestational compound to produce substantially only a local effect without changing in significant measure the amount of said compound in the blood stream of the user and thereby without generating side effects resulting from increased blood levels in the user of said progestational compound.
Specification