Barley Grass Juice
Also known as: Hordeum vulgare, barley grass, barley green, dehydrated barley grass juice, BGJ
Effective Dosage
No established dose from human clinical trials
What the Science Says
Barley grass juice is the pressed liquid from young barley plants, often sold fresh, frozen, or as a dehydrated powder. Animal studies suggest it may help reduce body weight, improve cholesterol levels, and support liver health when combined with a high-fat diet, likely due to its antioxidant compounds. It also contains vitamins, minerals, and chlorophyll, but there are no well-designed human clinical trials confirming these effects at any specific dose or timeframe.
What It Doesn't Do
Not proven to detox your body — 'detox' is a marketing term with no clinical backing here. Won't reliably treat obesity, diabetes, cancer, or arthritis in humans based on available evidence. Does not provide meaningful vitamin B12 — a study found that people relying on barley grass juice as part of a vegan diet still developed B12 deficiency at high rates. Not a substitute for a balanced diet or prescribed medications.
Evidence-Based Benefits
Barley grass juice is the pressed liquid from young barley plants, often sold fresh, frozen, or as a dehydrated powder. Animal studies suggest it may help reduce body weight, improve cholesterol levels, and support liver health when combined with a high-fat diet, likely due to its antioxidant compounds. It also contains vitamins, minerals, and chlorophyll, but there are no well-designed human clinical trials confirming these effects at any specific dose or timeframe.
Weak EvidenceEffective at: No established dose from human clinical trials
Source: auto-research
Absorption & Bioavailability
Unknown — no human pharmacokinetic data available from the provided studies. Nutrient absorption likely varies by form (fresh juice vs. dehydrated powder).
Red Flags to Watch For
- No human clinical trials confirm the weight loss or lipid benefits seen in rat studies — animal results frequently do not translate to humans
- Vegans or vegetarians using barley grass juice as a B12 source are at serious risk of B12 deficiency — this has been directly observed in research
- Widely marketed with broad disease claims (cancer, diabetes, arthritis) that have no clinical evidence behind them
- Over 1,000 registered supplement products exist despite only 3 indexed research papers — heavy commercialization outpaces the science
- Powder and juice forms may differ significantly in potency and nutrient content, but labeling standards are inconsistent
Products Containing Barley Grass Juice
See how Barley Grass Juice is used in these analyzed products:
Research Sources
- General knowledge
- Limited published research available
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-09