Pennyroyal was the herb that is abortive, and was used as far back as the 14th century or even earlier.
It also is great to grow around vegetables, and if you have pets, it is also a natural flea repellent. Rub your cat or dog with it and you really won't have a flea problem. But for this topic, It was literally the morning after tea. It can still be found in more diverse nursery's and herb farms. Perennial and very hearty.
Wife and I are herb kinda naturalist folks, that's how I know this crap,......NO not that herb either.....gave that crap up in the 80's...