Solaray Quercetin 500 mg
Quercetin 500 mg · 90 capsules
Quercetin 500 mg per label serving.
- Amount
- Quercetin 500 mg
- Format
- Capsules
- Review basis
- Label-based analysis
The product, at a glance
Amounts for the reviewed label serving.
- Reviewed variant
- Quercetin 500 mg · 90 capsules
- Label serving
- 1 capsule
- Servings per reviewed pack
- 90
- Ingredients per label serving
- Quercetin 500 mg
- Other ingredients
- Vegetable cellulose capsule, silica, stearic acid, cellulose
- Storage
- Store in a cool, dry place
Label sources & rating context
~ means approximate; — means no published value in this record. Customer ratings are the named publisher’s snapshot and may include multiple sizes or earlier formulas. The Supplement Explained Score is our source-reviewed editorial assessment out of 100, separate from customer stars. Five criteria are scored 1–5; their sum is multiplied by four. The total is not a clinical ranking or an effectiveness percentage. Prices are dated USD offer snapshots; cost uses the reviewed pack and label serving.
- Label clarity: 5/5
- Evidence transfer: 2/5
- Safety fit: 3/5
- Quality proof: 2/5
- Value fit: 3/5
On this pageTable of Contents
- 1Supplement Explained Score
- 2The exact plain-product label
- 3How to avoid ordering the wrong product family
- 4What “plain” does not mean
- 5Separate mechanisms from human outcomes
- 6What is known about interactions—and what remains uncertain
- 7Cost of the verified plain bottle
- 8Who may find this label useful?
- 9Common questions
Our editorial assessment
Supplement Explained Score
60/100
Solaray Quercetin 500 mg · Quercetin 500 mg · 90 capsules
Five equally weighted criteria, with a product-specific reason for every point. This is a buying-decision assessment, separate from customer stars and personal medical suitability.
- Label clarity 5/5
- Reviewed Quercetin 500 mg · 90 capsules: 1 capsule; 90 label servings. Quercetin 500 mg.
- Evidence transfer 2/5
- Human quercetin trials do not support a dependable exercise-performance advantage for this 500 mg capsule.
- Safety fit 3/5
- Medication interactions and limited long-term higher-dose data need attention; pregnancy use is not assumed appropriate.
- Quality proof 2/5
- The amount is identifiable, but no independent exact-product potency or contaminant record was verified.
- Value fit 3/5
- A single active simplifies comparison, but an unproven performance outcome should not justify a premium.
Review basis: Published labels, manufacturer/retailer information, clinical sources and exact-product quality records where available. We did not buy, personally use or laboratory-test this product for this assessment.
Reviewed · Method v2.0 · How we assign points
Sources behind this score
Product labels and independent directory records identify a formula or testing scope. Clinical references concern ingredients or studied regimens unless the explanation explicitly matches the finished formula.
The exact plain-product label
| Detail | Reviewed product |
|---|---|
| Product | Solaray Quercetin 500 mg |
| Bottle count | 90 capsules |
| Full serving | One capsule |
| Quercetin | 500 mg per serving |
| Added vitamin C or bromelain | Not listed on the reviewed active panel |
| Other ingredients | Vegetable cellulose capsule, silica, stearic acid, cellulose |
| Plant source or exact hydrate form | Not confirmed from the reviewed panel |
Do not fill the missing source or chemical-form information with a common ingredient-supplier assumption. The label reviewed here does not establish those details. [1]
View the manufacturer’s Supplement Facts label
View original manufacturer label
Manufacturer label; check the package you receive for changes.
How to avoid ordering the wrong product family
The plain 500 mg label is the only Solaray quercetin-family formulation whose complete quantitative panel is established in this review. Other names should trigger a fresh label check, not be treated as synonyms.
| Name seen in a listing | What to verify before comparing |
|---|---|
| Plain Quercetin 500 mg | The single-ingredient active panel, one-capsule amount, and 90-count bottle |
| A listing with QBC in the name | The full active ingredients, any added nutrients or enzymes, and actual quercetin amount |
| A listing with Mega in the name | The exact blend and per-serving quantities; “Mega” is not a dose unit |
| A listing with ProSorb in the name | The delivery-form description and what the declared milligrams refer to |
Check the active ingredients and amounts on each bottle. A blend may contain a different quercetin amount, and research on that blend does not automatically apply to the plain capsule.
What “plain” does not mean
Here, plain means the reviewed active panel lists quercetin rather than a multi-active vitamin-and-enzyme blend. It does not mean the finished capsule has no other ingredients. A capsule shell, silica, stearic acid, and cellulose remain in the formulation. [1]
It also does not mean the product is automatically better absorbed, safer with medicines, or more effective than a different quercetin formulation. Simplicity is a preference that can help identify the intended product; clinical superiority requires appropriate evidence.
Separate mechanisms from human outcomes
Quercetin is discussed in laboratory research involving biological mechanisms, but a mechanistic explanation is not a treatment result in people. A human study of one formulation also should not be reassigned to every product containing the ingredient.
Memorial Sloan Kettering discusses both laboratory and human research on quercetin. Those findings do not establish that this exact Solaray capsule treats allergies or prevents infections. Evidence for an ingredient and evidence for a finished product are different. [2]
The distinction matters because a label can accurately name an ingredient without proving that the finished product delivers the outcome a shopper hopes for.
What is known about interactions—and what remains uncertain
The Memorial Sloan Kettering reference includes laboratory interaction findings and a reported warfarin case. Laboratory effects are not automatically established interactions in every patient, and a case report does not determine a universal effect size. They are reasons to discuss the exact supplement with a clinician or pharmacist when medicines are involved. [2]
Do not change a prescription or assume that a plant-derived product cannot interact. The lack of a product-specific clinical trial also is not evidence of unlimited safety. Pregnancy, breastfeeding, and complex medical conditions deserve appropriate professional guidance rather than a blanket approval from an online review.
Cost of the verified plain bottle
The manufacturer’s displayed one-time price on September 27, 2026 was $28.39 for 90 capsules. That is approximately $0.315 per labeled 500 mg serving, excluding tax, shipping, subscriptions, and coupons. [3]
This calculation describes the exact plain product. A price for a blend, a different capsule count, or another delivery formula should not be used as though it refers to the same bottle. Cost per 500 mg also is not “cost per effective allergy dose”; an effective dose for that claim was not established in this review.
Check price at HerbsProHerbsPro: $28.39 for Quercetin, 500 mg, 90 Caps, checked October 5, 2026. Price and stock can change; confirm the current bottle label.
We may earn a commission from this link.Who may find this label useful?
It is useful to a shopper who has already decided with appropriate advice to examine quercetin and wants a formula without added C or bromelain in the active panel. It can prevent a mistaken order for a different blend or amount.
It is less useful as an answer to unexplained symptoms. Choosing a quercetin product should not replace assessment of persistent or severe symptoms, nor should the presence of a familiar ingredient be treated as permission to discontinue an established treatment.
Common questions
Does one capsule provide 500 mg?
Yes, that is the amount on the reviewed plain-product label. It is not a four-capsule total or the mass of a separately named delivery complex. [1]
Does this product contain bromelain?
Bromelain is not listed in the reviewed active panel. A separate blend under a similar brand name needs its own label check. [1]
Is it proven better than another quercetin formula?
That was not established. The available review supports an exact label identification and a discussion of evidence limits, not a finished-product superiority claim.
Related reading
For the arithmetic behind capsules, servings, and nutrient quantities, see our serving-size and dose guide.