Part 13 - The Honest Bottom Line
The signal is real but modest: specific protocols - Qingjin Yiqi granules, Ludangshen oral liquid, Bufei Huoxue capsules, Sijunzi decoction, Huangqi injection, and the qi-tonifying formulas that recur across China, Japan, and Korea (Bu Zhong Yi Qi Tang / Bojungikgi-tang / hochuekkito) - show genuine effects, strongest on fatigue, chest tightness, insomnia, depression, and anxiety. The evidence is still catching up: Long Covid–specific, high-quality completed trials remain scarce, and much of what is known is extrapolated from ME and/or post-viral fatigue studies. The classical model was built for this; the trials are now catching up to it.