I have never heard of that before. All i know that actually can help or at least i believe it does because this is what i did and my son came at 38 weeks and i had an easy all natural labor. And my first i did nothing and was 10 days late and induced.
I walked a mile everday then I drank raspberry leaf tea 3 times a day starting at 35 weeks to help my uterus strengthen then at 36 weeks i started inserting 3 epo tablets every night before bed for thinning out the cervix then at 38 weeks had my son after drinking castor oil i think the reason the castor oil worked for me was all the things i did to prep my body for it because it doesnt always work.
I never heard of papaya enzyme tablets before lol. What i am doing is eating a lot of papaya for breakfast which ive alays been a fan of it! I cold eat it non stop lol.. currently 37 weeks pregnant and a first time mom I don't feel any labor pains so I don't know if the actual papaya fruit would do the same thing as the tablets.