Hermetica Superfood Encyclopedia
The Short Answer
Lycium barbarum (goji berries) contains zeaxanthin and polysaccharides that provide antioxidant activity through free radical scavenging mechanisms. The fruit demonstrates DPPH radical scavenging with IC50 values of 830-950 μg/mL and provides significant vitamin C content.
CategoryHerbs (Global Traditional)
GroupTraditional Chinese Medicine
Evidence LevelStrong
Primary Keywordlycium barbarum benefits
Synergy Pairings3
Lycium barbarum — botanical close-up
Health Benefits
Origin & History
Natural habitat
Lycium barbarum, commonly known as goji berry, is a deciduous shrub in the Solanaceae family native to Asia, particularly China, where its bright red fruits are harvested. The bioactive components are extracted mainly via water or methanol methods to isolate polysaccharides (LBP), carotenoids, and phenolic compounds.
“Lycium barbarum (goji berry) has historical use in Traditional Chinese Medicine, though specific durations, indications, or contexts are not elaborated in the available research. The fruit has been traditionally harvested in China for medicinal purposes.”Traditional Medicine
Scientific Research
The research dossier lacks specific human clinical trials, RCTs, or meta-analyses for Lycium barbarum. Current evidence is limited to chemical composition studies, nutritional profiles, and in vitro antioxidant activity assessments rather than clinical outcome data.
Preparation & Dosage
Traditional preparation
No clinically studied dosage ranges are available from human trials. Studies mention standardization to LBP (Lycium barbarum polysaccharides) but without associated dosing recommendations. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Lycium barbarum (goji berry) fresh fruit provides approximately 46% carbohydrates, 13% protein (notably high for a fruit), 16% dietary fiber, and 35 mg vitamin C per 100g. The dominant bioactive fraction is polysaccharides (Lycium barbarum polysaccharides, LBPs), typically comprising 20-30% of dry weight, which serve as the primary immunomodulatory and neuroprotective compounds. Carotenoid content is notable, with zeaxanthin dipalmitate representing ~55.44% of total carotenoids; this esterified form shows enhanced stability compared to free zeaxanthin, though intestinal hydrolysis to free zeaxanthin is required for absorption, making bioavailability variable and dependent on dietary fat co-consumption. Betaine content is reported at approximately 0.1% dry weight, contributing to methylation support. Minerals include potassium (~1,132 mg/100g dry), calcium (~112 mg/100g dry), and iron (~9 mg/100g dry). Antioxidant capacity via DPPH• scavenging shows IC50 values of 830–950 μg/mL in vitro; this reflects moderate potency relative to other botanical antioxidants, and in vivo translation remains unconfirmed. Bioavailability of zeaxanthin is meaningfully enhanced when consumed with lipids due to its fat-soluble nature.
How It Works
Mechanism of Action
Lycium barbarum's antioxidant effects primarily stem from zeaxanthin and polysaccharide compounds that neutralize free radicals through electron donation. The zeaxanthin content specifically targets reactive oxygen species, while polysaccharides enhance cellular antioxidant enzyme systems including superoxide dismutase and catalase. These compounds work synergistically to reduce oxidative stress markers and protect cellular membranes from lipid peroxidation.
Clinical Evidence
Current evidence for Lycium barbarum is limited primarily to in vitro antioxidant studies showing DPPH radical scavenging activity with IC50 values of 830-950 μg/mL. Compositional analyses confirm significant nutritional content including 35 mg vitamin C per 100g fresh fruit, 46% carbohydrates, and 13% protein. Human clinical trials are sparse, with most research conducted in laboratory settings rather than controlled human studies. The evidence base requires expansion through randomized controlled trials to establish clinical efficacy and optimal dosing protocols.
Safety & Interactions
Lycium barbarum is generally recognized as safe when consumed as food, with minimal reported adverse effects in healthy individuals. Potential interactions may occur with anticoagulant medications due to compounds that could affect blood clotting mechanisms. Individuals with autoimmune conditions should exercise caution as polysaccharides may stimulate immune system activity. Pregnancy and lactation safety data is insufficient, requiring medical supervision for use during these periods.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
Lycium barbarumGoji berryWolfberryChinese wolfberryGouqiziFructus LyciiRed medlarBarbary matrimony vine
Frequently Asked Questions
What is the effective dosage of lycium barbarum extract?
No standardized clinical dosage exists due to limited human trials. Traditional use suggests 10-30g dried berries daily, while extracts vary widely in concentration and require manufacturer guidance.
Can lycium barbarum interact with blood thinning medications?
Yes, lycium barbarum may enhance anticoagulant effects of warfarin and similar medications. Patients on blood thinners should consult healthcare providers before use and monitor INR levels closely.
What compounds make lycium barbarum effective for antioxidant support?
Zeaxanthin and polysaccharides are the primary bioactive compounds responsible for antioxidant activity. These work through free radical scavenging and enhancement of endogenous antioxidant enzyme systems.
How long does it take to see benefits from lycium barbarum supplementation?
Clinical timeline data is limited due to insufficient human studies. Traditional use patterns suggest consistent daily consumption for 4-8 weeks may be needed for measurable antioxidant status improvements.
Is lycium barbarum safe during pregnancy and breastfeeding?
Safety data for pregnancy and lactation is insufficient to recommend use. The polysaccharide content may affect immune function, requiring medical supervision during these sensitive periods.
What is the difference between fresh lycium barbarum berries and dried extract supplements?
Fresh lycium barbarum berries contain approximately 35 mg of vitamin C per 100g along with whole-food carbohydrates, protein, and fiber, while dried extracts concentrate bioactive compounds like zeaxanthin dipalmitate but may lose some heat-sensitive nutrients. Dried extracts offer standardized dosing and longer shelf stability, making them more practical for supplementation, whereas fresh berries provide broader nutritional support from the whole food matrix. The choice depends on whether you prioritize convenience and standardization (extracts) or whole-food nutrition (fresh fruit).
Who should consider lycium barbarum supplementation for eye health support?
Individuals concerned about age-related eye health may benefit most from lycium barbarum supplementation due to its high zeaxanthin dipalmitate content (55.44% of total carotenoids), a carotenoid naturally concentrated in the macula. People with limited dietary intake of carotenoid-rich foods, those experiencing digital eye strain, or older adults may find supplementation particularly relevant. However, those with existing carotenoid sensitivity or consuming other carotenoid supplements should consult a healthcare provider to avoid excessive intake.
What is the quality of clinical evidence supporting lycium barbarum's antioxidant claims?
Current evidence for lycium barbarum's antioxidant activity is primarily in vitro, with laboratory studies showing free-radical scavenging activity (IC50 values of 830–950 μg/mL in DPPH assays), which does not directly translate to human physiological effects. In vitro evidence indicates potential bioactivity but cannot confirm that these compounds remain stable during digestion or achieve sufficient concentrations in the body to produce measurable antioxidant benefits. More robust human clinical trials are needed to establish efficacy for antioxidant support in real-world supplementation.
Explore the Full Encyclopedia
7,400+ ingredients researched, verified, and formulated for optimal synergy.
Browse IngredientsThese statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.
hermetica-encyclopedia-canary-zzqv9k4w lycium-barbarum curated by Hermetica Superfoods at ingredients.hermeticasuperfoods.com and licensed CC BY-NC-SA 4.0 (non-commercial share-alike, attribution required)
