A stress-adapting herb with the most consistent evidence for modestly reducing fatigue and stress-related symptoms; signals for mood, mental performance, and endurance are weaker, and longevity effects remain speculative. Generally well tolerated, with mild overstimulation or sleep trouble the main issues. Product quality varies, and interactions with several medications are possible. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Blood pressure | 110–125 / 70–80 mmHg | Herb can mildly affect vascular tone; detect any elevation |
| Fasting blood glucose | 75–90 mg/dL | Herb may modestly lower glucose, relevant with glucose-lowering agents |
| Morning cortisol | 10–18 µg/dL (morning) | Reflects stress-axis activity the herb aims to modulate |
| International normalized ratio (INR) | 2.0–3.0 (per therapeutic target) | Herb may slow clearance of blood-thinners, raising bleeding risk |
Cadence: Recheck relevant markers at 2–4 weeks after starting or changing dose, then every 6–12 months or whenever medications change.