Slippery Elm, I suppose they that would help “oil up” the innards. I use or recommend often for sore throat, dryness of GI tract, acid reflux, and easing the passage of kidney stones. Never thought of its potential use for inducing or helping abortino. Ick. Penny royal is very iffy. I think mandrake may also be used; there are plenty of toxic herbs. I never looked into this subject.