Goji berry extract (Lycium barbarum)

Tier 3 — weak evidence · Antioxidant · Eye health · Immunity

A traditional Chinese longevity food rich in zeaxanthin and polysaccharides. Small trials show modest improvements in well-being and immune markers. Supports macular health via zeaxanthin. Very safe as a food, but meaningfully enhances warfarin's anticoagulant effect. Benefits are real but similar to other antioxidant-rich berries.

Dose: 15 g/day dried berries or 500 mg extract; AVOID with warfarin — enhances anticoagulant effect