While female condoms internal condoms were originally designed for use in vaginal intercourse, some gay and heterosexual couples have used them for anal sex. There are no research studies on their efficacy in preventing the transmission of HIV and sexually transmitted infections during anal sex, but they form a barrier which should prevent semen and other bodily fluids from passing from one sexual partner to the other. Laboratory studies have demonstrated that the device is impermeable to HIV and other viruses. It is therefore reasonable to assume that using a female condom for anal intercourse will provide protection.
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Female condoms for anal sex | aidsmap
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Male condoms are more likely to break during anal sex than vaginal sex, so some health clinics and workers have been promoting female condoms as an alternative. Certain design elements may, in fact, make female condoms inappropriate for anal sex. When used in the anus, the female condom may not be easy to insert, comfortable, or even safe. While some state health departments agree with Terlikowski and recommend the female condom for anal sex, others specifically caution against it.
But what about when you explore the exciting and erotic world of anal sex? Wonder no more! So, the short answer is yes, you should consider using a condom during anal sex.