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Thorne Vitamin C with Bioflavonoids is a daily ascorbic acid supplement formulated alongside citrus bioflavonoids - plant-derived compounds found naturally alongside vitamin C in whole fruit.
£25
Thorne Vitamin C with Bioflavonoids is a daily ascorbic acid supplement formulated alongside citrus bioflavonoids - plant-derived compounds found naturally alongside vitamin C in whole fruit.
Thorne Vitamin C with Bioflavonoids is a daily ascorbic acid supplement formulated alongside citrus bioflavonoids - plant-derived compounds found naturally alongside vitamin C in whole fruit.
Follow the dosage on the packaging. The existing guidance suggests one capsule taken one to three times daily; taking it with food may reduce the likelihood of digestive discomfort, which can occasionally occur with ascorbic acid on an empty stomach.
Thorne Vitamin C with Bioflavonoids is a daily ascorbic acid supplement formulated alongside citrus bioflavonoids - plant-derived compounds found naturally alongside vitamin C in whole fruit. The pairing matters: bioflavonoids are thought to support the absorption and tissue retention of ascorbic acid, which is why whole-food vitamin C sources have long been preferred over isolated ascorbic acid in clinical practice.
Vitamin C is one of the most studied micronutrients. It contributes to normal immune function, collagen synthesis, and the protection of cells from oxidative stress. It is also involved in iron absorption from plant-based sources - a practical consideration for anyone eating a largely plant-based diet or managing borderline ferritin levels.
This supplement suits a broad range of people: those under sustained physical or mental stress (both deplete tissue vitamin C faster than usual), frequent travellers, individuals in the recovery phase after illness, or anyone whose diet does not reliably include fresh fruit and vegetables. It is also a sensible baseline for those building a supplement stack who want a well-tolerated, bioavailable form of vitamin C before exploring higher-dose protocols.
Thorne is a brand with a longstanding reputation for rigorous manufacturing standards and formulation quality. Their products are regularly chosen by clinicians who need reliable, consistent supplements for patient use. The inclusion of citrus bioflavonoids rather than ascorbic acid alone reflects a considered formulation approach.
Standard UK delivery included on every order, 1 to 3 working days after dispatch.
Next working day for £25 when you order by 12pm. Orders placed before 12pm on a working day leave the same day. Later orders leave the next working day.
You can return unopened and unused items within 30 days of delivery. This does not affect your statutory rights. Read the delivery and returns terms
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Sign inCitrus bioflavonoids are naturally co-occurring compounds in vitamin C-rich fruits. They are thought to support the absorption and tissue retention of ascorbic acid, making this combination closer to how vitamin C appears in whole food than isolated ascorbic acid alone.
People under prolonged physical or psychological stress, those eating a diet low in fresh fruit and vegetables, frequent travellers, and individuals recovering from illness. Those on plant-based diets may also benefit, as vitamin C meaningfully improves non-haem iron absorption.
Vitamin C is generally well tolerated alongside most supplements. However, at higher intakes it can interact with certain medications, including some chemotherapy agents and blood thinners. If you are on prescription medication, check with your GP or pharmacist before starting.
For immune and antioxidant support, there is no single marker to track without a blood test. Consistent daily intake over several weeks is the typical approach; if you are concerned about deficiency, a plasma vitamin C test can confirm baseline levels before and after supplementation.
Those with a history of kidney stones — particularly calcium oxalate stones — should use vitamin C supplements cautiously, as high doses may increase oxalate excretion. Check the packaging for the dose per capsule and discuss with a clinician if you are in this group.
Overall
6 months ago
Take it with breakfast every day, usually alongside my iron supplement. Since swapping to this from a supermarket own-brand I've been less run-down through the winter. Hard to attribute exactly but I'm a convert.
6 months ago
Switched to this after a friend who works in nutrition suggested the bioflavonoid combo over plain ascorbic acid. Only been on it about a week but no digestive upset at all, which was my main worry after a cheap supermarket version gave me grief. Seems well-tolerated so far. Will update but happy with the start.
6 months ago
Wanted something reliable to anchor my stack before I started adding anything more complex. This does the job — no stomach upset, easy to remember, well-made.
6 months ago
My doctor suggested adding vitamin C after some bloodwork flagged low ferritin. She specifically mentioned this formulation with bioflavonoids. Three months in, levels have improved — can't say this alone did it, but it's stayed in the routine.
6 months ago
Quality feels right and I trust the brand. Only gripe: the capsule is noticeably bigger than other supplements I take. Fine once you're used to it, but worth knowing if you struggle to swallow tablets.
7 months ago
No fuss, no fillers I can't pronounce. Just takes a regular spot in my morning pill organiser. Would buy again without hesitation.
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