An important note: During oral sex, STIs can be transmitted from the genitals to the mouth or from the mouth to the genitals.

Mouth to anus

• Known risks

  • hepatitis A

  • parasites

  • bacterial infections

  • herpes

  • syphilis

• Unknown risks

  • HPV

  • chlamydia

  • gonorrhea

Mouth to vulva

• Known risks

  • herpes

  • syphilis

• Possible risks

  • HIV

  • hepatitis B (giving oral sex, if there is menstrual blood)

• Unknown risks

  • HPV

  • chlamydia

  • gonorrhea

Safer sex tips:

• Place a dental dam over the vulva or anus. (Our link also gives instructions on how to make your own dental dam.)

• Use some lube on the inside of the dam to feel good. It is best to use non-flavored and non-glycerin lube on vulvas.

• Use your dam as a tool to add sensation and increase your partner's pleasure. Ask what kind of pressure or movement works for them or experiment together.

Mouth to penis

• Known risks

  • herpes

  • syphilis

  • gonorrhea

  • chlamydia

• Possible risks

  • HIV

  • hepatitis B

Safer sex tips:

• Use a condom! The best condoms for oral sex on a penis are non-lubed condoms or flavored condoms.

• If you don't use a condom, don't take cum in your mouth.

• Wait at least an hour after you've brushed or flossed your teeth, before having oral sex.

• Avoid oral sex if you have bleeding gums or sores in your mouth.