the boutique
Thorne Vitamin C with Bioflavonoids

Thorne

Vitamin C with Bioflavonoids

£25.00

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.

  • Supports normal immune function during periods of stress
  • Contributes to collagen synthesis and connective tissue health
  • Citrus bioflavonoids may improve ascorbic acid absorption
  • Antioxidant protection against daily oxidative stress
  • Aids iron absorption from plant-based food sources
4.9(44 reflections)
1

Secure checkoutFree delivery over £5030-day returns

ThorneVitamin C with Bioflavonoids
1

Recommended Alongside

Vitamin D3 + K2 liquid drops

Vitamin D3 + K2 Liquid Drops deliver two fat-soluble nutrients that are commonly considered together: D3 as cholecalciferol — the form most readily converted a…

Welzo Akkermansia 60 Billion AFU Ultra Purity

60 billion AFU of Akkermansia muciniphila plus 64 billion CFU of Lactobacillus acidophilus, 700 mg berberine, 200 mg inulin, 2.4 mg astaxanthin, and chromium i…

Interested in more
personalised recommendations?

Set up your wai Profile to connect your wearables, biomarkers and test results. Create a bespoke plan based on your unique biology. Expert-led, evidence-based.

Set up Profile now

About This Product.

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.

Vitamin C, Citrus Bioflavonoids

Vitamin C with Bioflavonoids

How to Take It

i.

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.

Frequently Asked.

Why does this contain bioflavonoids alongside vitamin C?

Citrus 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.

Who is most likely to benefit from a daily vitamin C supplement?

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.

Can I take this alongside other supplements or medications?

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.

How long until I notice a difference?

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.

Is there anyone who should avoid this supplement?

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.

You May Also Like

AEKE

AEKE K1 AI-Powered Smart Home Gym

Discover

Dryft

Dryft Sleep Mouth Tape Sleep Strips

Discover

Finding your calm in a stressful environment

We offer physician-led talks and events to help you learn more about how to deal with stress through movement, mindfulness, and refocusing.

Learn about our next event

Customer Reflections

Overall Sentiment

4.944 reflections
1 – 6 of 44 reflections
BO

Part of my morning routine now

4 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.

DF

First impressions — solid

4 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.

MT

Solid baseline supplement

4 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.

F

Recommended by my GP

5 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.

CR

Good quality, capsule is quite large

5 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.

AS

Does what it says

5 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.

Shop by Selection

immunity.beauty.longevity.

Test Before You Supplement.

A blood test is the only way to know what your body actually needs. We’ll tell you which of these supplements is right for you.

Find your panel

More From Thorne. View all