If there was a way to prevent any and all abnormalities in any future child should every pregnant woman be made to do it?

I don’t mean, like take something that is invasive, but rather, if doctors discovered that the right amount of a certain vitamin or chemical is the cause for children being born either with a physical or mental difference from what is considered normal.
I know that will never happen, but just suspend your belief and pretend there is this magic vitamin or pill that can make sure your child is never born with some physical difference, like and extra toe, or mental difference, like being a savant, or passionate, or artistic, or violent. Just a normal, absolutely boring person.
Perfectly normal healthy genetics. So should it become mandatory? Or should the parents decide to role the dice? You get what you get?