Cervical Cap
vs
Internal Condom

A side-by-side comparison of two birth control methods — efficacy, cost, how they work, and who shouldn't use them.

Side-by-side comparison

Method
Cervical Cap

Cervical Cap

A small silicone cap that fits over the cervix by suction, used with spermicide before sex.
Internal Condom

Internal Condom

A soft pouch worn inside the vagina that blocks sperm and protects against STIs, available over the counter.
EfficacyLeast effective see details

Least effective: under 90 out of 100 people successfully prevent pregnancy per year.

79% typical use

Least effective: under 90 out of 100 people successfully prevent pregnancy per year.

Cost$90–$120

Insurance: Usually

$2–$4 /per unit

Insurance: Varies

DurationReusable for 2 years (replace every 2 years or sooner if damaged)Single use
ReversibilityReversibleReversible
STI ProtectionNoYes
How it works

A small silicone cap fits snugly over the cervix and stays in place by suction, blocking sperm from entering the uterus. Used with spermicide inside the cap.

A soft, loose-fitting nitrile pouch lines the vagina and collects semen. The inner ring anchors it at the cervix and the outer ring stays outside the vaginal opening.

PrescriptionRequired Prescription requiredOTC No prescription / OTC
Available Products1 product1 product
Side effects
  • Vaginal irritation from spermicide
  • Discomfort if not fitted correctly
  • Unusual vaginal discharge if left in too long
  • Mild irritation or discomfort
  • Noise during use if not positioned correctly
  • Slippage with incorrect insertion
Who shouldn't use this
  • Cervical anomaly preventing fit
  • Active pelvic infection
  • Sensitivity to silicone or spermicide
  • Inability to insert or remove reliably
  • Sensitivity to nitrile (rare)