So 9 grams of fat for every 1 g of resveratrol is a good ratio for optimal absorption.
Co-administration of quercetin had no effect on resveratrol.
"Our study found decreased and delayed absorption of trans-resveratrol in combination with a high-fat breakfast, as compared with a standard breakfast. These data suggest that food has an important effect on the pharmacokinetics and systemic exposure of trans-resveratrol. The AUC and Cmax were decreased by 45% and 46%, respectively, and the tmax was prolonged to 5 hours from 3 hours with a high-fat breakfast. A previous food-effect study comparing single doses of trans-resveratrol (400 mg) in the fasted and fed states found a 21% decrease in the Cmax and a 6% increase in the AUC. The tmax was prolonged in that study from 0.5 hour in fasted subjects to 2 hours in fed subjects.
Although these differences were minor, it seems that intake of trans-resveratrol on an empty stomach or with a small meal results in higher exposure than occurs after a high-fat meal."
https://link.springer.com/article/10.21 ... 0000-00000