Breastfeeding Birth Control
vs
Sponge
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 |  Breastfeeding Birth ControlA natural postpartum method (lactational amenorrhea method, LAM) that relies on exclusive breastfeeding to suppress ovulation, effective for up to 6 months. |  SpongeA soft foam disc placed deep in the vagina before sex. It covers the cervix and contains spermicide. |
|---|---|---|
| Efficacy | 98% typical use Moderately effective: over 90 out of 100 people successfully prevent pregnancy per year. | Least effective see details Least effective: under 90 out of 100 people successfully prevent pregnancy per year. |
| Cost | $0–$300 Insurance: Varies | $15–$20 /per package Insurance: No |
| Duration | Up to 6 months postpartum | Single use (can be left in place up to 24 hours and for multiple acts of sex) |
| Reversibility | Reversible | Reversible |
| STI Protection | No | No |
| How it works | Exclusive breastfeeding suppresses the hormones that trigger ovulation. High prolactin from frequent nursing keeps estrogen and progesterone low, preventing the return of menstrual cycles. | A foam disc impregnated with spermicide is placed over the cervix before sex. The spermicide kills or disables sperm and the physical barrier blocks sperm from entering the uterus. |
| Prescription | OTC No prescription / OTC | OTC No prescription / OTC |
| Available Products | No branded products yet | 1 product |
| Side effects | None reported |
|
| Who shouldn't use this |
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