"If you have an upset stomach, sip some peppermint tea.
Just one cup relaxes your stomach and intestinal muscles.
It also reduces inflammation, which will relieve gas, nausea and indigestion. You can also add fresh peppermint leaves to salads or iced tea for the same effect.
If you’re not a fan of mint, chamomile has compounds that relieve indigestion too." (tesh.com)