Limited evidenceLongevity & antioxidants

Luteolin

Luteolin is a genuinely interesting anti-inflammatory flavone in cell and animal research with essentially no standalone human efficacy data. The human trials people cite are combination products where luteolin is the minor ingredient — and where it was tested alone, it failed.

What the science says

Tested by itself against placebo, it did not work Limited evidence
In a placebo-controlled crossover screening trial in 21 male veterans with Gulf War Illness, luteolin reduced symptom severity no more than placebo at either the lower (p = 0.72) or higher (p = 0.49) dose. Resveratrol, tested in the same protocol, did beat placebo at both doses (p = 0.035 and p = 0.004) — so the study was capable of detecting a signal, and luteolin did not produce one.
The positive human trials are combination formulas Limited evidence
A 202-patient blinded multicentre randomized trial in persistent COVID-19 olfactory dysfunction found ultramicronized palmitoylethanolamide plus luteolin added to olfactory training beat either therapy alone — but PEA is the dominant, better-characterized active and typically supplies ten times the mass of luteolin. Similarly, 6-month RCTs of a chlorogenic acid plus luteolin nutraceutical improved cardiometabolic parameters in pre-obesity and metabolic syndrome. Neither design can attribute the benefit to luteolin.
The mast cell and neuroinflammation mechanism is preclinical only Limited evidence
Luteolin inhibits mast cell mediator release and microglial activation in vitro — the basis for its marketing around "brain fog," histamine intolerance and autism. These effects appear at micromolar concentrations in cell culture; luteolin has poor water solubility and undergoes extensive glucuronidation and sulfation on first pass, so free plasma concentrations after an oral dose are far lower. Mechanism plausibility is not clinical evidence.

Dosage & safety

Studied doseHuman trials used roughly 100-500 mg/day, usually in liposomal or olive-oil-based formulations to work around poor solubility; PEA-luteolin products typically supply about 700 mg PEA with 70 mg luteolin daily. There is no established effective standalone dose because no adequate standalone trial has been done.

SafetyShort trials report no serious adverse events; GI upset is the usual complaint. Long-term safety is unstudied. As a flavone, luteolin inhibits CYP enzymes and sulfotransferases in vitro — use caution with narrow-therapeutic-index drugs. Flavones of this class show thyroid peroxidase inhibition in animal studies, so caution is warranted with thyroid disease. Not established in pregnancy or breastfeeding, and — importantly — not established in children despite luteolin blends being marketed for paediatric neurodevelopmental use, an area where parents deserve evidence rather than mechanism stories. Not banned in sport.

Scientific references

A Placebo-Controlled, Pseudo-Randomized, Crossover Trial of Botanical Agents for Gulf War Illness: Resveratrol (Polygonum cuspidatum), Luteolin, and Fisetin (Rhus succedanea)
Hodgin KS, Donovan EK, Kekes-Szabo S, et al. — Int J Environ Res Public Health, 2021
Treatment of COVID-19 olfactory dysfunction with olfactory training, palmitoylethanolamide with luteolin, or combined therapy: a blinded controlled multicenter randomized trial
Di Stadio A, D'Ascanio L, Vaira LA, et al. — Eur Arch Otorhinolaryngol, 2023

Where to buy

Double Wood Supplements, Luteolin, 120 Capsules (50 mg per Capsule)

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