the boutique
Thorne Buffered C Powder

Thorne

Buffered C Powder

£25.00

Buffered C Powder by Thorne is a vitamin C supplement in powdered form, using a buffered version of ascorbic acid — meaning the acidity is partially neutralised, typically with mineral salts such as calcium, magnesium,…

  • Buffered formula is gentler on the digestive tract
  • Supports normal immune function year-round
  • Flexible dosing via measured powder format
  • Contributes to collagen synthesis and tissue repair
  • Suits those with ascorbic acid sensitivity
4.9(36 reflections)
1

Secure checkoutFree delivery over £5030-day returns

ThorneBuffered C Powder
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.

Buffered C Powder by Thorne is a vitamin C supplement in powdered form, using a buffered version of ascorbic acid — meaning the acidity is partially neutralised, typically with mineral salts such as calcium, magnesium, or potassium ascorbate. This makes it considerably gentler on the gastrointestinal tract than standard ascorbic acid, which can cause discomfort at higher doses.

Vitamin C is one of the most studied micronutrients in human health. It contributes to normal immune function, collagen synthesis, and the protection of cells from oxidative stress. As a water-soluble vitamin, it is not stored in the body and must be obtained consistently through diet or supplementation.

The powder format suits people who find capsules difficult to swallow, those who want to titrate their intake with flexibility, or those who need higher doses — such as individuals recovering from illness, under significant physical stress, or with identified deficiency. It dissolves readily in water and can be added to any cold drink.

Thorne is a brand with a long-standing reputation in the practitioner supplement space, known for rigorous manufacturing standards and clean formulations. This product contains no unnecessary fillers, making it a straightforward choice for those who want vitamin C without additional ingredients. It is a particularly sensible option for anyone who has experienced digestive sensitivity with standard ascorbic acid in the past.

Ascorbic Acid (buffered)

Buffered C Powder

How to Take It

i.

Mix half a teaspoon into a glass of water or cold drink. Follow the dosage guidance on the packaging, as individual requirements vary. Taking it with food may further reduce any chance of digestive discomfort.

Frequently Asked.

Why is buffered vitamin C easier on the stomach than regular ascorbic acid?

Standard ascorbic acid is quite acidic, which can irritate the stomach lining or cause loose stools at higher doses. Buffering it with mineral salts raises the pH, making it significantly gentler — a meaningful difference for anyone taking more than a modest daily amount.

How long until I notice a difference?

Vitamin C works as part of your ongoing nutritional status rather than producing an acute effect you would notice quickly. Consistent daily intake over several weeks is the relevant timeframe for supporting immune resilience and tissue health.

Is this suitable for people with sensitive stomachs?

It is specifically formulated with that in mind. The buffered form is the standard recommendation for anyone who has experienced nausea, heartburn, or loose stools with regular ascorbic acid supplements.

Can I take this alongside other supplements?

Vitamin C is generally well-tolerated alongside most common supplements and may actually enhance the absorption of non-haem iron. If you are on any prescribed medication, check with your GP or pharmacist before adding any new supplement.

Who might need more than the standard dietary reference intake of vitamin C?

Smokers, people under chronic stress, those recovering from illness or surgery, and individuals with limited fruit and vegetable intake are among those who may have higher requirements. A blood test can help clarify whether your levels are adequate.

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

4.936 reflections
1 – 6 of 36 reflections
SK

Finally a vitamin C that doesn't upset my stomach

4 months ago

I've tried a few different vitamin C supplements over the years and most of them left me with cramps or an unsettled stomach by mid-morning. This one I can take on an empty stomach without any issues. Dissolves well in water, barely any taste. Will be a permanent fixture in my routine.

JW

Solid staple supplement

4 months ago

Been using this for about two months. Easy to mix, no gritty residue, and I've not had a single cold since I started — which may be coincidence but I'll take it. Straightforward product that does what it promises.

PM

5 months ago

Started taking this after my GP mentioned my vitamin C intake was probably low. Mix it into a glass of water each morning, barely notice it's there. Gentle on the gut which is the main thing for me.

T

Great quality but the tub size is small for the price

5 months ago

No complaints about the product itself — it's gentle, mixes well, and I've had no GI issues at all compared to the standard ascorbic acid I used before. My only gripe is that the tub doesn't last as long as I'd like if you're taking it twice a day. At £21.99 you're re-ordering fairly quickly.

FB

Much kinder on digestion

5 months ago

Swapped to this after regular vitamin C tabs were giving me heartburn. Night and day difference. I take a scoop in orange juice every morning and honestly forget I'm even supplementing. Really pleased with it.

NO

5 months ago

Recommended by a nutritionist. Does the job, no fuss. Dissolves easily and I like that there's nothing unnecessary in it.

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