Medical providers at Nurx agree that birth control pills are over 99% effective, especially when taken as prescribed. The more often you’re able to take your pills, or replace your patch, consistently – the more effective the medication will be. But since of course we know that it can be hard to take a pill at the same time every day, or replace a patch on a specific date, often birth control is only up to 92% effective. Our strongest recommendation would be to do your best to use your birth control consistently, in the way your medical provider described.