Ginger is the most evidence-backed herbal remedy for nausea, with studies supporting its use during pregnancy, after chemotherapy, and for general motion sickness. Gingerol, its main active compound, acts on receptors in the gut and brain to reduce the sensation of nausea. Peppermint tea can also help with nausea and is particularly effective for digestive upset and IBS-related discomfort, though it can worsen acid reflux in some people. Chamomile has mild anti-nausea and anti-inflammatory properties. For an upset stomach specifically, warm fluids in general — even plain hot water — help relax digestive muscles. Sipping slowly matters more than which tea you choose.
