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5 peer-reviewed studies
What the evidence says
Most Tocotrienols studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.
Most evidence is from medium-quality meta-analyses and randomised trials published 2011–2024 with a typical study size of 71 participants.
Based on 5 studies · 2 meta-analyses · 2 RCTs · 71 total participants
Confidence
HighBy outcome
2 studies in the last 5 years · Latest meta-analysis: 2024
A meta-analysis (15 articles) found tocotrienol supplementation significantly raised HDL cholesterol but did NOT lower LDL, total cholesterol, or triglycerides.
Zuo S et al. · Complement Ther Med (2020)
A meta-analysis found rice bran (a tocotrienol source) consumption improved lipid profiles.
Park SY et al. · Nutrients (2024)
A randomized trial found delta-tocotrienol combined with resveratrol improved metabolic-syndrome markers.
Fatima S et al. · Metab Syndr Relat Disord (2023)
A review summarized tocotrienols and cardiovascular health.
Prasad K et al. · Curr Pharm Des (2011)
A randomized, double-blind, placebo-controlled pilot (n=71) found delta-tocotrienol (300 mg twice daily) improved liver enzymes and inflammatory markers in NAFLD, though ultrasound steatosis did not significantly change.
Pervez MA, Khan DA, et al. · The Turkish Journal of Gastroenterology (2018)