Zhi Zhu Wan (Atractylodes and Immature Bitter Orange Pill) zhǐ zhú wán · 枳术丸

Safety. Zhi Zhu Wan is recorded in Neiwaishang Bianhuo Lun. Two herbs: bai zhu in the larger proportion, and bran-fried zhi shi. The whole interest of the formula lies in that proportion, because the same two herbs appear in Zhang Zhongjing's Zhi Zhu Tang with the weights reversed, and the twelfth- and thirteenth-century physicians who discussed this pair argued explicitly that turning the ratio around, and changing the preparation from decoction to pill, changed what the pair was for. A pill is taken over weeks; a decoction is taken over days. Here the supplementing herb outweighs the moving one, and the classical indication is fullness and poor appetite in a person whose digestion is weak. The preparation is part of the text rather than a footnote. The original wraps the pill mass in lotus leaf around cooked rice. Lotus leaf is itself described in this tradition as raising the clear, which sits against the downward and dispersing action of zhi shi — the same upward-and-downward pairing that appears in other formulas in this library. It also means the finished pill is a grain-based preparation, which is not a neutral fact for everyone. A modern reader should know what epigastric fullness can be. Functional dyspepsia is a real and common diagnosis, but it is a diagnosis made after other things are excluded, not before. Fullness with unintentional weight loss, difficulty swallowing, persistent vomiting, black stools or anaemia, new symptoms after the age of fifty, or a family history of gastric cancer warrants endoscopic assessment. Peptic ulcer disease, gastro-oesophageal reflux, Helicobacter pylori infection, gastroparesis, biliary and pancreatic disease and mesenteric ischaemia can all present as fullness, and gastric cancer is common in the populations where this formula is used. Safety. Zhi shi contains p-synephrine, a sympathomimetic amine; bitter orange extracts standardised for this amine have attracted regulatory attention over cardiovascular events, and theoretical additive effects with stimulants, monoamine oxidase inhibitors and heavy caffeine intake are worth naming even though the effect of this formula has not been established. Zhi shi and zhi qiao are different herbs from the same plant at different stages of maturity and are not interchangeable. Bai zhu and cang zhu are two different Atractylodes herbs with different traditional uses and are not interchangeable either. Bran-frying uses wheat bran as the processing medium, which matters to people with severe gluten intolerance. Continued daily use of this formula has not been established as safe, and herbs of this family are traditionally cautioned in pregnancy. This library does not claim the formula relieves fullness or treats dyspepsia.