Gou Qi Zi
Also known as: Lycium barbarum, goji berry, wolfberry.
Gou Qi Zi remains in the ingredient set because the site preserves the nourishing side of the TCM recovery map, but it stays Tier 4 because the practical case is still pattern-based and low evidence.
Where this fits in the system
What it does
Gou Qi Zi is a gentle support ingredient for nights and mornings that feel dry, overstimulated, and somewhat depleted. It belongs in the optional TCM layer rather than the core stack.
How it works
Where it fits
This is for recovery that feels both dry and slightly frayed, especially when the user wants a nourishing tea-style adjunct instead of another aggressive intervention.
Buying guidance
Plain dried berries or tea-cut product from a reputable source are enough. Treat it as a support layer, not as a substitute for sleep, hydration, or the core mechanism stack.
Deep science · Gou Qi Zi — deep dive
Why it is Tier 4
Gou Qi Zi is useful as part of the full library because it covers a distinct pattern. It is still clearly secondary because the modern evidence for direct hangover impact is thin.