After the ovule has been inserted into the vagina, it dissolves during the 10 minutes wait into a microfine foam. This spreads evenly throughout the vagina and uniformly distributes the spermicidal active ingredient nonoxinol-9.

Patentex oval offers a two-fold protection against pregnancy.

Nonoxinol-9 is Patentex oval's spermicidal ingredient. This active ingredient is a highly potent spermicide. The American Food and Drug Administration (FDA) has classified nonoxinol-9 into the highest category as regards effectiveness and tolerability (Category 1: Safe and Effective). Nonoxinol-9 inactivates sperm by destroying its cell membrane.

Nonoxinol-9 not only acts as a spermicide, but also inactivates bacteria (e.g. Chlamydia trachomatis), fungi (e.g. Candida albicans) and parasites.

How safe is Patentex oval?  >>>
Patentex oval and tolerability  >>>
Correct use  >>>
How does it work?  >>>
Contraindications and side effects  >>>
Where can I get Patentex oval?  >>>

Is Patentex oval the right contraceptive for me?  >>>

Frequently asked questions >>>