Thank you for reaching out. Quercetin is a polyphenol-flavonoid known to increase the cellular absorption of Zinc, so you can take Quercetin simultaneously as Zinc and not 20 minutes apart. Quercetin and Turmeric can be used together or apart; however, if you are pairing Quercetin with Zinc, we suggest taking Turmeric two hours away from this pairing. The reason being is that it's ideal to consume zinc supplements at least two hours apart from other supplements (excluding Quercetin) and medication to avoid interactions.