A flavonoid-rich medicinal-tree bark extract sold for memory and healthy aging. Its most credible benefit is a modest memory improvement in older adults with mild cognitive complaints over twelve weeks. Broader benefits for blood sugar, liver, inflammation, heart, bone, and cancer pathways rest on lab and animal work. Side effects appear mild; long-term safety is unknown. (Full Review)
| Marker | Target | Why |
|---|---|---|
| ALT / AST (liver enzymes) | ALT <25 U/L (men), <20 U/L (women); AST <25 U/L | Detect any liver stress from a concentrated botanical extract |
| Fasting glucose | 75–90 mg/dL | Track the herb's glucose-lowering activity and catch additive hypoglycemia |
| HbA1c | <5.4% | Assess longer-term glucose control given antidiabetic signal |
| hs-CRP (inflammation marker) | <1.0 mg/L | Gauge whether anti-inflammatory effects translate to a measurable change |
| Complete blood count (CBC) | Within standard reference ranges | Screen for any unexpected hematologic effect during longer use |
Cadence: Recheck liver enzymes and fasting glucose at 6–12 weeks if combining with hepatically cleared or antidiabetic medications; reassess cognitive measures at 12 weeks, then every 3–6 months if continued.