Diaphragm
vs
Withdrawal
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 |  DiaphragmA reusable silicone dome that covers the cervix to block sperm, used with spermicide each time you have sex. |  WithdrawalThe man withdraws his penis from the vagina before ejaculation to reduce the chance of sperm reaching the egg. |
|---|---|---|
| Efficacy | 83% typical use Least effective: under 90 out of 100 people successfully prevent pregnancy per year. | 80% typical use Least effective: under 90 out of 100 people successfully prevent pregnancy per year. |
| Cost | $80–$200 Insurance: Usually | $0 Insurance: Varies |
| Duration | Reusable for 1-2 years (replace every 1-2 years or sooner if damaged) | Per act |
| Reversibility | Reversible | Reversible |
| STI Protection | No | No |
| How it works | A reusable silicone dome covers the cervix to block sperm from entering the uterus. Used with spermicide for added effectiveness. | The man withdraws his penis from the vagina before ejaculation to keep semen out of the vagina. Pre-ejaculate may contain some sperm, which is why perfect use is not 100%. A 2024 pilot study found sperm in about 13% of pre-ejaculate samples, though roughly 75% of participants had no sperm in any sample. |
| Prescription | Required Prescription required | OTC No prescription / OTC |
| Available Products | 2 products | No branded products yet |
| Side effects |
| None reported |
| Who shouldn't use this |
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