Parasympathetic nerve is used as micro-nutritional Homeopathic potency (animal product). Homeopathic potencies accredit their strength and efficacy to the electromagnetic signatures of the original substrate; these are scientifically created dilutions and succussions of medicines such that generally not even a molecule of the original substrate or medicine is present in the medicine.

As a Homeopathic or used simply as a micro-nutritional, Parasympathetic nerve has demonstrated effectiveness against the following symptomology: tetany, nervousness (Bouko-Levy) .