What does Oryzanol (Gamma-Oryzanol) do?

Rice bran compound with early evidence for cholesterol, inflammation, and mood support — but human data is still limited.

Is Oryzanol (Gamma-Oryzanol) safe?

Most mechanistic evidence is from animal or preclinical studies — human clinical trials are small and short-term

Oryzanol (Gamma-Oryzanol) - Science-Based Research

What the Science Says

Gamma-oryzanol is a natural compound extracted from rice bran oil, made up of ferulic acid esters. Human and animal studies suggest it may modestly reduce LDL cholesterol, triglycerides, and inflammatory markers like CRP and IL-6, particularly in people with type 2 diabetes or metabolic syndrome. One clinical trial also found that a rice bran extract supplement (1 g/day for 8 weeks) significantly reduced mild-to-moderate depressive symptoms compared to placebo.

What It Doesn't Do

Not a replacement for statins — its cholesterol-lowering effect is far weaker (8–15% vs. 30–50% for statins). No proven benefit for muscle building or athletic performance despite old marketing claims. Brain and neuroprotection benefits are mostly from animal studies — not proven in humans yet. Won't reverse diabetes or obesity on its own.

Evidence-Based Benefits

Gamma-oryzanol is a natural compound extracted from rice bran oil, made up of ferulic acid esters. Human and animal studies suggest it may modestly reduce LDL cholesterol, triglycerides, and inflammatory markers like CRP and IL-6, particularly in people with type 2 diabetes or metabolic syndrome. One clinical trial also found that a rice bran extract supplement (1 g/day for 8 weeks) significantly reduced mild-to-moderate depressive symptoms compared to placebo.

Weak Evidence

Effective at: No established dose from provided studies; clinical trials used 2 mg/kg/day (animal) and fortified oil preparations

Source: auto-research

Absorption & Bioavailability

Poor to Moderate — gamma-oryzanol has limited oral bioavailability due to poor intestinal absorption; delivery in oil-based formats (like rice bran oil) may improve uptake, but no direct bioavailability studies were provided.

Red Flags to Watch For

Most mechanistic evidence is from animal or preclinical studies — human clinical trials are small and short-term
No standardized dose established across studies, making it hard to know how much is effective
Often combined with other ingredients (monacolins, GABA) in supplements, making it impossible to isolate oryzanol's specific contribution
Long-term safety data in humans is lacking; systematic reviews note this gap explicitly
Products with 1000+ registered formulations vary widely in dose and form — quality control is a concern

Research Sources

PubMed
NIH DSLD