i just learned about how the vagus nerve, and the sucking reflex (thumb-sucking anyone?)- can not only calm anxiety, but can heal a multitude of issues, or so say many...
One thing is important to remember though, that stimulating the VN while under the influence of drugs can cause the drugs to circulate for longer, in the bloodstream, so be (a)ware of that.
other ways to stimulate the VN:
sounds like it's well worth considering. no affiliation w the website, btw, i just like what it is offering.