What’s inside this formula?
Thorne’s Quercetin Complex is listed here in the quercetin collection. This article looks at the selected 60 capsules — US label pack, then puts its ingredients into context.
Per 1 capsule: Bromelain 100 mg; Quercetin Phytosome (Japanese Sophora extract (flower) / Phospholipid complex from Sunflower) 250 mg.
Check the original label ↗Quercetin is a flavonoid found in foods such as onions, apples and tea. Concentrated supplements have been researched for several purposes, including exercise performance. Its activity in laboratory systems is interesting, but it does not establish a predictable benefit in people or make a capsule equivalent to a varied plant-rich diet.
The pack details above come from the manufacturer. Ingredient research below does not establish the effects of this exact product or independently verify its contents.
The complete declared ingredient amounts
The current table uses a serving of 1 capsule. It declares Bromelain 100 mg; Quercetin Phytosome (Japanese Sophora extract (flower) / Phospholipid complex from Sunflower) 250 mg. These are manufacturer label amounts, not a personal dosing instruction.
The comparison detail that changes the decision
One capsule combines 250 mg quercetin phytosome with 100 mg bromelain. The phytosome amount is not the same as a free-quercetin amount. The selected product has 60 labelled servings per container. Matching ingredient form and serving matters more than bottle count.
Excipients, cautions and evidence limits
Other listed ingredients: Leucine, Microcrystalline Cellulose, Silicon Dioxide, Hypromellose (derived from cellulose) capsule. The manufacturer flags potential bleeding interactions from bromelain with anticoagulants. Keep the capsule intact because the powder may irritate the mouth. No independent batch test or exact-formula clinical outcome was verified in this review. Current Indian stock and delivered price remain unverified.
Where might it be useful?
A food-derived flavonoid
Quercetin is one of many plant compounds present in everyday foods.
A tested performance question
Human exercise studies help test the marketing claims, but have not established a dependable performance benefit.
What the research can — and cannot — tell us
NIH guidance finds little evidence supporting quercetin for exercise or athletic performance. A randomized exercise study also found no significant benefit for the performance measures assessed. These findings should temper broad endurance, recovery or immune claims and do not establish efficacy for this finished product.
What deserves your attention?
The manufacturer flags potential bleeding interactions from bromelain with anticoagulants. Keep the capsule intact because the powder may irritate the mouth.
Suitability comes before strength
Long-term high-dose use has less safety information than ordinary food intake. Review medicines and combination ingredients before use, especially with chronic illness. Do not use quercetin instead of prescribed allergy or respiratory treatment.
Dietary details for this product
Dietary status not confirmed The reviewed current label does not explicitly establish vegan or vegetarian status for the complete formula. A cellulose capsule or dairy-free statement alone is not a whole-formula declaration.
A dietary label and an allergy assessment answer different questions. Check every ingredient, the capsule or softgel materials and the allergen statement on the pack you receive. If you take medicines, have a health condition, are pregnant or are choosing for a child, discuss the full formula with a qualified clinician.
Make the comparison meaningful.
- Match the exact version.Look for Thorne · Quercetin Complex and the 60 capsules — US label pack. A similar name or bottle can contain a different strength, blend or serving.
- Compare like with like.Read the serving size alongside the active ingredient amount. Capsule count, compound weight and total blend weight can describe different things. Use the label notes above to see what matters for this formula.
- Check the seller and final cost.Review seller identity, expiry, batch details and any Indian import information. Compare the final delivered price only after matching the formula. Prices and stock are checked on the retailer’s site.
Keep the label beside the decision.
Open the complete product profile for its source, dietary notes and available shopping destination.
Is this an endorsement or a medical recommendation?
No. This is an editorial guide to a selected product and its ingredient context. We have not independently tested this bottle or established a clinical benefit for this exact formula. A product’s inclusion is not a recommendation that everyone should take it.
Does Proof & Price earn from shopping links?
Some product-profile links are paid links and are labelled. As an Amazon Associate we earn from qualifying purchases. Manufacturer source links are provided for checking the label. Read our affiliate disclosure.
Read, check, decide.
Product label reviewed 2026-11-01. Ingredient context reviewed 2026-10-26. This article has not received independent clinical review. Packaging and formulas can change; the current pack takes precedence.
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