Bitters

Bitter herbs have been used in traditional Chinese and Ayurvedic medicine for centuries to support healthy digestion, soothe occasional gas and bloating, relieving nausea and heartburn, encouraging digestive secretions, and promoting gentle detox.

They also support liver function * 

"Not only do bitters stimulate the vagus nerve, they also bind to bitter receptors throughout the entire digestive tract," explains Dr. Briana Lutz, a naturopathic doctor in Edmonton, AB. "Activating these bitter receptors has been shown to regulate blood sugar, which can reduce energy crashes or sugar cravings."