Thai Ginger Tea (Galangal) - Thais swear by tea for many home remedies and ginger tea is one of their favorite natural stomach ache cures. In Thailand, you can buy Thai ginger root, or galangal, at market stalls, supermarkets and even on stalls at the side of the road for as cheap as 10 cents a piece. In the west, it's available at health food stores and most good supermarkets.