https://finance.yahoo.com/news/nerve-freedom-reviews-investigated-complaints-124900854.html

VagusNerve

Since Nerve Freedom is formulated with 100% natural and non-GMO ingredients, it’s generally considered safe. It contains no chemicals, fillers, or stimulants. Some users might experience mild digestive discomfort during the first few days as their body adjusts to the formula — a common reaction with any supplement. Taking the capsules after meals and drinking enough water usually eliminates these effects. However, those who are pregnant, nursing, or under medical treatment should consult a doctor before use.