Our plant based Quercetin 500mg capsules provide the highest absorption by 20x!! Regular quercetin has poor solubility and limited oral absorption. However, our advanced technology binds quercetin with phospholipids, increasing its absorption and bioavailability 20-fold. Choosing regular quercetin may result in as little as 20% absorption, providing minimal to no benefit. Activated Quercetin: MoxyVites quercetin supplements utilize an advanced delivery system with phytosome technology. This innovative approach enhances bioavailability by improving the interaction between phytoconstituents and phospholipids. Each capsule delivers potent quercetin powder, designed to maximize the benefits of this powerful formulation. Immunity vitamins for natural relief: Nutritional support from carefully selected WHOLE FOODS containing the highest amounts of quercetin with powerful antioxidants. Backed by science to provide all year support. Powerful benefits: Powerful antioxidant, boost the immune system & cellular health. Suitable for vegan/vegetarian. Pharmaceutical grade: Highly bioavailable & Potent, 250mg/capsule, 500mg serving with 120 capsules in a bottle. MoxyVites Promise: We stand by our products & promise a no question asked refund or replacement if you experience any issues. 100% happy customers is what we strive for at MoxyVites! Proudly made in USA: We proudly manufacture all our supplements in the USA! Our manufacturing facility is GMP certified and adheres to the highest quality control standards to ensure all of our products are non-GMO with NO preservatives, fillers, gluten, wheat, nuts, dairy, eggs, shellfish, soy, or gelatin. Third party tested: As a professional grade supplement company we have every raw ingredient tested for purity and quality, so you can take it with confidence and without any risk.