Pomelo Peel: Unpeeling the Science Behind a Thai Traditional Remedy
Thailand’s markets come alive with the fragrance of som-o, or pomelo, especially during the cool season when its hefty, grapefruit-like fruits are stacked high. Many Thais relish its sweet-tart segments at temple fairs or New Year merit offerings. Yet, the greatness of the pomelo (Citrus grandis (L.) Osbeck)—known locally by names such as โกรัยตะลอง, มะขุน, มะโอ, ลีมาบาลี, and สังอู—extends far beyond the fruit bowl. For centuries, Thai traditional medicine has harnessed the thick, aromatic peel of som-o for remedies thought to ease coughs, swelling, skin woes, and indigestion. But how much of the old wisdom has stood up to scientific inquiry? Today, with both respect for heritage and a critical eye, we explore what research reveals about pomelo peel’s healing promise—and where prudent caution remains essential.