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Quercetin from Sophora Japonica — 500mg per capsule — 120 capsules
✓ 500mg quercetin per capsule — 1000mg per daily serving of two
✓ 120 capsules — 60-day supply at two per day
✓ Vegan, single-ingredient — manufactured in the UK to GMP Code of Practice and ISO 9001
Quercetin is a plant flavonoid found naturally in onions, apples, berries, capers and many other everyday foods. It is one of the most abundant flavonoids in the human diet and among the most actively studied plant compounds in nutritional science. This formulation delivers pure quercetin extracted from Sophora japonica (the Japanese pagoda tree) — 500mg per capsule, with nothing else added.
✓ A naturally occurring plant compound found across the everyday diet
✓ 500mg per capsule — 1000mg per daily serving of two
✓ 120 capsules — 60-day supply at two per day
✓ Single-ingredient formula with no unnecessary additives
✓ Vegan HPMC capsule and rice flour — no animal-derived ingredients
✓ Free from gluten, lactose, wheat, soya and GMOs
✓ Manufactured in the UK to GMP Code of Practice and ISO 9001
Many quercetin products are sold at lower doses or blended with bromelain and other ingredients. This formulation takes a different approach: 500mg of pure quercetin per capsule, two capsules per day, nothing else. For those who already have their supplement routine in place and want a straightforward quercetin source, there is no need to navigate a complex multi-ingredient product — just quercetin, in a vegan capsule, made in the UK.
Two capsules per day with food is the recommended dose — most easily taken as part of a morning or lunchtime meal. At two per day, 120 capsules provides a two-month supply. The capsules are straightforward to keep as part of an established routine and travel easily without special storage requirements. Those who prefer a longer continuous supply can subscribe for automatic top-ups.
Quercetin is classified as a flavonol — a subtype of flavonoid — and belongs to the polyphenol family of plant compounds. It is found in significant amounts in red onions, capers, apples, berries, broccoli and leafy greens, making it a natural part of most plant-rich diets. The quercetin in this formulation is extracted from Sophora japonica, the Japanese pagoda tree, which is one of the most concentrated botanical sources of quercetin in commercial use. The extract is purified to deliver a consistent, standardised dose in every capsule.
Quercetin is among the most actively researched plant flavonoids in nutritional science, with a large body of published studies examining its natural distribution, biological properties and potential roles in the diet. Research interest in this flavonoid has grown substantially since the 1990s and it remains an active area of nutritional investigation. Quercetin does not appear on the GB nutrition register for any approved health effect. Swiss BioEnergetics offers this formulation based on quercetin's natural dietary prevalence and established research interest — not as a treatment or substitute for a varied diet.
Quercetin Extract (Sophora japonica) — 500mg per capsule — Pure quercetin from the Japanese pagoda tree; 500mg per capsule, 1000mg per daily serving of two. Net weight equals gross weight — no dilution with carrier.
Rice Flour (Oryza sativa) — 150mg per capsule — A natural bulking agent that maintains the powder consistency within the capsule.
HPMC Capsule Shell — Plant-derived hydroxypropyl methylcellulose: suitable for vegetarians and vegans. No gelatin, no animal-derived materials.
Trusted UK Manufacturing — Every Swiss BioEnergetics product is manufactured in the United Kingdom at a facility operating to GMP Code of Practice and ISO 9001. Not outsourced, not imported, and independently audited.
Clean, Potent Ingredients — Formulated without unnecessary fillers, artificial colours, artificial preservatives or GMO ingredients. Free from gluten, lactose, soya, wheat and yeast.
Evidence-Inspired Formulas — Swiss BioEnergetics selects botanicals and ingredients with a long history of traditional use and active presence in nutritional research, sourced to a consistent standard every batch.
If you are not completely satisfied with your purchase, contact the Swiss BioEnergetics team within 30 days and they will make it right.
Available as a one-off purchase or as a flexible subscription — pause, adjust or cancel whenever you choose.
What is the dose per serving?
Each capsule contains 500mg of quercetin extract. The recommended daily serving is two capsules, providing 1000mg. There are 120 capsules per bottle — a 60-day supply at two per day.
Why is quercetin extracted from Sophora japonica?
Sophora japonica is one of the most abundant natural sources of quercetin and is widely used in commercial quercetin extraction because of its consistently high flavonoid content.
Is it suitable for vegetarians and vegans?
Yes — both the HPMC capsule shell and the rice flour are plant-derived. The formulation contains no animal-derived ingredients and is suitable for vegetarians and vegans.
Can I take this alongside other supplements?
Quercetin is commonly taken as part of a broader supplement routine. If you are taking medication or under medical supervision, speak to your doctor before use.
Where is this made?
Manufactured in the United Kingdom to GMP Code of Practice and ISO 9001.
Quercetin is a plant flavanol from the flavonoid group of polyphenols. It is found naturally in many fruits, vegetables, leaves, seeds, and grains. Capers, red onions, and kale are common foods containing appreciable amounts of it. It has a bitter flavour, which it seems to lose when it is used as an ingredient in this dietary supplement.Quercetin benefits may include improved inflammation, blood pressure and physical performance. These capsules by Swiss Bio-Energetics are high strength Quercetin, and each contains pure Quercetin in a vegan capsule shell with rice flour and absolutely nothing else. As a vegan I find that info important to know. Taking the recommended two capsules each day would supply 1000mg of Quercetin. They are free from lactose, gluten, wheat, maize, soya, yeast, dairy and GMOs. They are suitable for both Vegetarians and Vegans and the products are manufactured exclusively in the UK to GMP code of practice... all of which info is important to me. This is not a supplement I have taken before, so was keen to give it a try as I suffer from inflammation.The pot contains120 capsules, so this will last around two months, which I feel is enough time to decide if these are going to be of benefit. They are on the large side and contain a yellow, lime green powder. They are relatively easy to swallow and there is no aftertaste. I have tried other supplements from Swiss Bio-Energetics and have always been really pleased with them. Quercetin may have a natural antihistamine effect, which will be of benefit during pollen season for Hay Fever sufferers. I have been taking these now for around two weeks and I do feel good. Is it the Quercetin? I don’t know for certain and it is difficult to tell, but I have faith in them. Perhaps this will be a supplement that I will specially take at the time of the year when the pollen count is high.
Unsure about the Swiss Bio Energetics moniker, particularly with a Made in the UK logo, sound a load of buzz words, but Maybe that's me!However it is high strength, good purity and appears decent quality, particularly for the reasonable price. Compared with other Quercetin I've tried it seems similar. I like the bright yellow in the clear capsules and it's low on fillers (rice flower, I guess not "artificial")
Quercetin is a flavonoid found in many common fruits, vegetables and some nuts, and believed to be an effective antioxidant. If the diet is low in these foods, or there’s days when they’re not consumed, it’s may be worth supplementing, especially as there’s a range of benefits believed to be associated with it.This supplement contains 1000 mg of quercetin, which is a fairly high strength but apparently still considered to be a safe daily amount. What I like about the product is not only it’s pure status (just being quercetin itself) but its higher bioavailability, because if I’m going to spend money on supplements like this then I want them to be as effective as possible.One thing I’m particularly keen to see is its possible effect as a natural antihistamine, which will hopefully be of benefit to me in the summer months when I tend to get hay fever. Even without that, the other benefits believed to be associated with quercetin still make it a worthy addition to the diet, even just for the antioxidant protection against free radical damage.I’ve had supplements from Swiss Bioenergetics before and was particularly impressed, so am pleased to try this supplement from them as well. Although the name suggests otherwise, the supplement is manufactured in the UK (to GMP standards).Capsules are a sort of speckled-yellow colour, which is a little unusual for supplements. However, it’s just the colour of the extract and perfectly acceptable.An all-round decent quercetin supplement.
Slightly larger capsules but easy enough to swallow.
This is a great brand for getting only what you’re paying for - no nasty fillers and random use of maltodextrin - this makes me happy. The tablets aren’t small but they are that expected yellow colour and I have no problem swallowing them. I’m convinced that they do the job of helping me with inflammation and I am a frequent purchaser from this brand. Good value for money!
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