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Goji Berries (Lycium barbarum; wolfberry)
An antioxidant berry (rich in zeaxanthin and polysaccharides) studied for eye health, lipid/cardiovascular markers, and general well-being; evidence is early-to-moderate.
What the evidence says
Most Goji Berries studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.
Most evidence is from high-quality meta-analyses and randomised trials published 2012–2023.
Based on 6 studies · 3 meta-analyses
Confidence
HighBy outcome
Goji Berries has an evidence score of 5.2/10 — moderate evidence based on 6 indexed studies, including 3 meta-analyses. An antioxidant berry (rich in zeaxanthin and polysaccharides) studied for eye health, lipid/cardiovascular markers, and general well-being; evidence is early-to-moderate. Representative study: PMID 34839399.
The commonly studied dose of Goji Berries is 15-45g dried berries daily, or ~150-300mg standardized Lycium barbarum polysaccharide (LBP) extract. Individual needs vary — start at the lower end of the range and adjust based on how you respond.
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Last reviewed June 2026 · evidence from 6 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
Goji berries (Lycium barbarum), also called wolfberry, are a nutrient-dense fruit rich in the carotenoid zeaxanthin (relevant to macular/eye health) and Lycium barbarum polysaccharides (antioxidant, immune-modulating). Meta-analyses and reviews suggest modest improvements in lipid and cardiovascular risk markers and subjective well-being, plus a plausible role in supporting macular pigment for eye health. The clinical evidence base is still early-to-moderate, with mostly small trials.
Goji is one of the richest food sources of zeaxanthin, which concentrates in the macula and filters blue light.
Lycium barbarum polysaccharides provide antioxidant and immune-modulating effects.
May modestly improve lipid markers and oxidative stress.
15-45g dried berries daily, or ~150-300mg standardized Lycium barbarum polysaccharide (LBP) extract
Take with food
| Form | Type |
|---|---|
| 💊Dried berries or standardized LBP extract | Recommended |
| 💊Juice | Alternative |
| 🧪Powder | Alternative |
Choose products standardized to polysaccharides or eaten as whole fruit.
Minimum: 4 weeks
Optimal: 12 weeks
Cycling: Not required
Note: With a fat-containing meal for carotenoid absorption.
Dose-response data unavailable. The current published research for Goji Berries does not provide sufficient dose-specific outcome data to generate reliable dose-response curves.
Refer to the Dosage & Timing section above for recommended dose ranges based on available evidence.
Raises macular pigment via zeaxanthin, supporting age-related eye health.
Increases antioxidant capacity; may improve well-being.
Small improvements in cholesterol/triglycerides.
Avoid or monitor INR — reported interaction raising bleeding risk.
Limit to culinary amounts; concentrated extracts not well studied.
Case reports of goji raising INR/bleeding risk with warfarin — monitor.
May add mildly to glucose/BP lowering — monitor.
Tip: Reduce amount
Tip: Avoid if allergic to nightshades
Timing is flexible for Goji Berries — consistent daily use matters more than the time of day. Eaten as dried fruit or taken as extract with food (zeaxanthin is fat-soluble, so a fat-containing meal aids absorption).
Goji Berries is generally safe at recommended doses, with a few precautions worth noting. The most commonly reported side effects are mild GI upset, allergic reaction. Use caution if any of these apply to you: Use of warfarin (reported interaction); Allergy to goji/nightshade-family plants.
Anthocyanin-dense berry that protects retinal cells, reduces eye fatigue, and improves microcirculation throughout the body.