non-nutrient/non-botanical

Quercetin supplements

Half of the 1,548 quercetin supplements in the NIH label database that print an amount list 100 mg or less per serving; the middle half list 26.5 mg to 250 mg (DSLD version 9.4.0, January 2026). The 74 products whose only supplement ingredient is quercetin list a median of 500 mg.

How much quercetin do supplements contain?

The median product lists 100 mg per serving. One in ten lists 10 mg or less, one in ten 500 mg or more. The amount printed most often is 50 mg (194 products).

Which products list the most quercetin?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• Energize Fruit Punch FlavoredBeachBody Performance1,500 mg
• Energize Lemon FlavoredBeachBody Performance1,500 mg
• Energize Mixed Berry FlavoredBeachBody Performance1,500 mg
• Quercetin 1,500 mgAN Amazing Nutrition Amazing Formulas1,500 mg
• Quercetin 500 mgSports Research1,250 mg
• Quercetin 1200 mgNutriFlair1,200 mg
• Quercetin (98% + Pure Extract)Samsara Herbs1,175 mg
• Quercetin 1000 mgGNC Preventive Nutrition1,000 mg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 30 mg; those entered in 2025, 100 mg.

In which products and brands?

Brands listing it most: Nature's Plus (28), Life Extension (27), Source Naturals (27), XYMOGEN (22), Emergen-C (21), SuperSmart (19), Pure Encapsulations (19), Designs for Health (18), Purity Products (18), Ortho Molecular Products (16).

Every product listing quercetin

2,393 products, A to Z by name (page 34 of 48), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Quercetin 1000 mgGNC Preventive Nutrition1,000 mg
• Quercetin 1000 mgNutricost1,000 mg
• Quercetin 1000 mgBest Naturals1,000 mg
• Quercetin 1000 mgNusaPure1,000 mg
• Quercetin 1000 mgKAL1,000 mg
• Quercetin 1000 mgO Orgeuos1,000 mg
• Quercetin 1000 mgSmart Nutra Labs1,000 mg
• Quercetin 1200 mgNutriFlair1,200 mg
• Quercetin 250 mgVQ Verified Quality250 mg
• Quercetin 250 mgNatrol · off the market500 mg
• Quercetin 250 mgBIOVEA500 mg
• Quercetin 250 mgVital Nutrients500 mg
• Quercetin 3 in 1 Advanced ComplexKAPPA NUTRITION1,000 mg
• Quercetin 300NutriCology600 mg
• Quercetin 300Allergy Research Group600 mg
• Quercetin 300 mgMoss Nutrition300 mg
• Quercetin 475 mg High PotencySwanson475 mg
• Quercetin 50 mg PineappleKAL50 mg
• Quercetin 500GNC · off the market500 mg
• Quercetin 500ProCaps · off the market500 mg
• Quercetin 500Metagenics500 mg
• Quercetin 500Totally Products500 mg
• Quercetin 500ProCaps Laboratories235 mg
• Quercetin 500 mgNature's Harmony500 mg
• Quercetin 500 mgNatrol · off the market500 mg
• Quercetin 500 mgMRM · off the market500 mg
• Quercetin 500 mgAbsorb Health500 mg
• Quercetin 500 mgGNC500 mg
• Quercetin 500 mgWe Like Vitamins500 mg
• Quercetin 500 mgNatural Factors500 mg
• Quercetin 500 mgMental Refreshment500 mg
• Quercetin 500 mgAN Amazing Nutrition Amazing Formulas500 mg
• Quercetin 500 mgNatural Grocers by Vitamin Cottage500 mg
• Quercetin 500 mgaSquared Nutrition500 mg
• Quercetin 500 mgHerbal Secrets500 mg
• Quercetin 500 mgNOW1,000 mg
• Quercetin 500 mgWindmill Natural Vitamins500 mg
• Quercetin 500 mgCalifornia Gold Nutrition500 mg
• Quercetin 500 mgJarrow Formulas500 mg
• Quercetin 500 mgViva Vitamins500 mg
• Quercetin 500 mgNasaBe'Ahava500 mg
• Quercetin 500 mgPure Naturals Herbs500 mg
• Quercetin 500 mgSolaray500 mg
• Quercetin 500 mgSports Research1,250 mg
• Quercetin 500 mgCarlson500 mg
• Quercetin 500 mg + D3Country Life500 mg
• Quercetin 500 mg Bromelain 100 mglonglifenutri500 mg
• Quercetin 500 mg with Zinc & CopperNatural Factors500 mg
• Quercetin 500 PlusVitabase500 mg
• Quercetin 500 PlusNewflower Farmers Markets500 mg

Where next?

• Check an amount of quercetin
• Labels above the upper limit
• All ingredients