Quercetin + Nettle: What's in the Capsule and How to Read the Label

Quercetin is in your salad bowl already. Nettle has been cooked as a leaf vegetable and brewed as tea for generations.

So what happens when you put both in a capsule? Here's how to read the label.

The quick answer

• Quercetin is a dietary flavonoid found in apples, onions, tea, red grapes, cherries and berries [1].
• Nettle (Urtica dioica) leaf is the other active, as an extract.
• Ours lists 600 mg quercetin + 600 mg nettle leaf extract per 3 capsules, 30 servings.

See Quercetin + Nettle Capsules →

Where quercetin comes from

Quercetin is a plant flavonoid. Memorial Sloan Kettering lists apples, black, green and buckwheat tea, onions, red grapes, cherries, raspberries and citrus fruits among its food sources [1].

Nettle leaf

Stinging nettle (Urtica dioica) is a perennial plant. Its leaves are cooked like spinach once the sting is neutralized, and brewed as tea. Supplements use leaf or root, so check which part is listed; ours is leaf.

Reading a 600 mg + 600 mg label

The amounts are per serving, and our serving is 3 capsules. So each capsule holds about 200 mg of each. Neither ingredient has an established Daily Value, which is why the label shows an asterisk.

Who should check first

Supplement-level quercetin has limited long-term safety data. MSKCC notes a reported case of a raised INR in a man taking warfarin after he started quercetin [1]. If you take blood thinners or other medications, talk with your practitioner first.

Quercetin label checklist

• Quercetin amount and the serving size it applies to.
• Nettle part (leaf or root) and whether it's an extract.
• Capsule type and other ingredients.
• Allergen and GMO statements.
• Medication questions answered with your practitioner [1].

Why we paired quercetin with nettle

Here's how ours reads: - Quercetin 600 mg + nettle leaf extract 600 mg per 3-capsule serving; 90 capsules, 30 servings. - Vegetarian capsules; gluten free, dairy free, soy free, non-GMO. - Made in a GMP registered facility in the USA. This product is not organic. - 60-day money-back guarantee.

Shop the products mentioned:

• Quercetin + Nettle Capsules: quercetin 600 mg + nettle leaf 600 mg per serving.
• Organic Camu Camu Capsules: organic camu camu, a whole-food vitamin C source.
• Zinc Complex Capsules: zinc bisglycinate with B2, B6 and molybdenum.

Want the seasonal-routine angle? Read our quercetin + nettle seasonal wellness article.

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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

FAQ

What foods contain quercetin? Apples, onions, tea, red grapes, cherries, raspberries and citrus fruits, among others [1].

How much quercetin is in each capsule? About 200 mg. The label's 600 mg is per serving of 3 capsules.

Is nettle leaf the same as nettle root? They're different parts of the same plant. Our capsule uses nettle leaf extract.

Can I take quercetin with blood thinners? Talk with your doctor first. MSKCC reports a case of raised INR in a man on warfarin who started quercetin [1].

References

1. Memorial Sloan Kettering Cancer Center, About Herbs. Quercetin. https://www.mskcc.org/cancer-care/integrative-medicine/herbs/quercetin