View photos of the medicinal plant Angelica pinnata (Small leaf angelica), profiled in Medicinal Plants of the Western Mountain States.

From Medicinal Plants of the Western Mountain States:

Both the seeds and roots are used as a gastrointestinal carminative. Drink several ounces of the tea, the tincture in a little water, or even chew on a small hand full of seeds for the relief of indigestion, especially if accompanied by fullness, bloating, and nausea. Some find the chewed seeds alone an effective and quick–acting therapy for simple heartburn or gastritis.