Light formula

One of the ten formula types. A formula containing medicinals that are light in weight. Light [medicinals] can eliminate repletion, i.e., medicinals light in weight can be used to treat exterior repletion patterns. For example, Ephedra Decoction (麻黄汤 má huáng tāng) treats heat effusion, aversion to cold, headache, generalized pain, lumbar and joint pain, thirst, absence of sweating, panting, and a tight floating pulse.