Folic acid

Extra folic acid reduces the chance of your baby being born with spina bifida. It’s important to already start taking this before the pregnancy, namely from the moment you stop using birth control. Take a 0.4mg pill every day from four weeks before you want to get pregnant until the first 10 weeks of pregnancy. Folic acid is available from chemists and drugstores without a prescription.

You can find more information about folic acid here.