Natural Factors Natural Factors - Quercetin with Zinc & Copper, 60 vcaps

Price

Regular Canadian retail price: $25.98 CAD. Price Vault members pay below retail on this product. Member pricing is private and shown after a free opt-in, with no membership fee, no minimum order and no subscription.

In stock. Free shipping across Canada on orders over $89, flat $9.95 under that. 30 days to request a return, with return shipping paid by the customer. Ships from Victoria, BC.

See member pricing on Natural Factors Natural Factors - Quercetin with Zinc & Copper

Why people keep reordering it

Highly absorbable forms

Chelated forms your body takes up, instead of oxide that mostly passes through.

Calm and recovery

Supports muscle relaxation, sleep quality and everyday stress resilience.

Gentle on digestion

Formulated to skip the laxative effect of cheaper magnesium.

Best suited to: wants the dose used in quercetin trials, takes zinc daily and worries about copper, vegan and wants quercetin in capsules, wants antioxidant and zinc in one pill.

What the research supports

One capsule gives 500 mg of quercetin plus 15 mg of zinc, balanced with a small amount of copper. Sixty capsules is a two month supply.

Quercetin trials mostly use 500 to 1000 mg daily.

Immunity (evidence: strong, from randomized controlled trial, meta-analysis)

Zinc is needed to build and activate immune cells, and 15 mg daily reliably brings marginal zinc back to where it should be in adults who run low.

Blood pressure (evidence: moderate, from meta-analysis)

Quercetin relaxes small blood vessels, and trials at 500 mg or more daily for eight weeks or longer report small drops in systolic pressure in adults with typical readings.

Histamine response (evidence: limited, from in vitro, small randomized controlled trial)

Quercetin slows how fast mast cells release histamine in lab studies, but human trials in people with seasonal reactions are small and the results are mixed.

Read the literature: Immunity on PubMed, Blood pressure on PubMed, Histamine response on PubMed.

Is it right for you

Worth it if

Wants the dose used in quercetin trials

One capsule is 500 mg of plain quercetin, the same form and amount most human studies were built on.

Takes zinc daily and worries about copper

The 1000 mcg of copper citrate is matched to the 15 mg of zinc at roughly the ratio that keeps months of zinc intake from pulling copper down.

Vegan and wants quercetin in capsules

The shell is a cellulose vegetarian capsule and there are no animal products anywhere in the formula, unlike the gelatin softgel versions.

Wants antioxidant and zinc in one pill

At 15 mg it replaces a separate daily zinc capsule instead of stacking on top of one.

Look elsewhere if

Already taking a separate zinc supplement

Take plain quercetin with no minerals attached, so the 15 mg here does not double up on what you already take.

Wanting to push quercetin to 1000 mg daily

A standalone quercetin lets you raise the dose on its own, since doubling this capsule also takes you to 30 mg of zinc and 2 mg of copper.

Wants the best absorbed quercetin available

A micelle or phytosome quercetin is engineered for the absorption problem, though it costs considerably more per milligram.

What to expect

Nothing perceptible day to day. Take it with food, because 15 mg of zinc on an empty stomach causes nausea in a lot of people, and space it a few hours from any daily medication as the label directs.

How it compares

Compared with plain quercetin capsules with nothing added

You get 15 mg of zinc and 1 mg of copper in a ratio that has been thought through, instead of buying, timing and balancing two more bottles. The tradeoff: The three doses are welded together, so quercetin cannot go up without zinc going up with it.

Compared with a micelle or liposomal quercetin at 250 mg

This gives twice the raw milligrams for far less money, in the exact form and amount the human quercetin trials used. The tradeoff: Plain quercetin is close to insoluble and a good share of every capsule is never absorbed, which is the problem the enhanced formats exist to solve.

Product details

Medicinal ingredients

Quercetin (bioflavonoids), Zinc (citrate, dihydrate), Copper (citrate)

Ingredient form

vcaps

Servings per container

60

Suggested use

1 capsule once daily with food, a few hours before or after taking other medications, or as directed by a health care practitioner.

Country of manufacture

Canada

Independent testing

ISURA

Certifications

Non-GMO, Made in Canada

Storage

Store in a cool, dry place

Brand

Natural Factors

How to take it

1 capsule once daily with food, a few hours before or after taking other medications, or as directed by a health care practitioner.

• Store in a cool, dry place away from direct light.
• Keep out of reach of children.
• Consult a practitioner if you are pregnant, nursing or on medication.

Ingredients

Non-medicinal ingredients

Vegetarian capsule (carbohydrate gum [cellulose], purified water), microcrystalline cellulose, vegetable grade magnesium stearate (lubricant), stearic acid, silica.

Free from

Contains no artificial colours, preservatives, or sweeteners; no dairy, starch, sugar, wheat, gluten, yeast, soy, corn, egg, fish, shellfish, animal products, salt, tree nuts, or GMOs. Suitable for vegetarians/vegans.

Interactions and cautions

Medications

May reduce absorption of certain antibiotics and thyroid medication.

Timing

Separate from medications by 2 to 4 hours unless directed otherwise by a healthcare practitioner.

Pregnancy and breastfeeding

Consult a healthcare practitioner before use if pregnant or breastfeeding.

General

Use only as directed. Discontinue and consult a practitioner if you experience an adverse reaction.

This product is not intended to diagnose, treat, cure or prevent disease. Consult a healthcare practitioner before use. Free certified advisors are available at 1-888-386-1211, Mon to Fri, 9am to 5pm PT.

Questions about Natural Factors - Quercetin with Zinc & Copper

Is this the genuine, authentic product?

Yes. It is identical to what you would pay full price for anywhere else, sourced through our authorized supplier relationships.

How is the price below retail?

We buy direct, with nobody in the middle taking a cut, and we sell it for close to what we paid. You see the price privately because you have unlocked the Vault.

How fast does it ship?

Orders placed before 12pm PT are processed the same day and ship within two business days. Shipping is free over $89, and a flat $9.95 under that.

Can I return it?

You have 30 days after it arrives to request a return. Product must be unused, in its original packaging, with proof of purchase, and return shipping is paid by you. Find it cheaper anywhere in Canada and we will match the price.