Vitamin C 1000mg — Buffered Ascorbic Acid
High-strength vitamin C in a pH-neutral (buffered) form — gentler on the stomach than standard ascorbic acid.
What does optimal health cost per day?
Less than a coffee top-up. Optimal nutrition for 18p/day — the most cost-effective investment in your health.
Free Vitamin C 1000mg with orders over £40
While stocks last · auto-added at checkout
Supply size
Most customers reorder this monthly. Each pack lasts ~30 days.
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Your daily health investment
£0.37
per day
£2.59
per week
£10.99
per month
Less than a daily coffee — for daily nutritional support from Vitamin C.
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Only £2.99 — credited toward your first full order
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Limited spotsPool orders with other Vitamin buyers. The more people join, the more everyone saves. Next group buy runs when we hit 50 registrations.
📦 What to expect when it arrives
Premium box
Double-sealed. No cheap poly bags — every Medibro order ships in a quality box.
Amber glass
UV-protective amber glass preserves potency. Satisfying click-lid seal.
Little extras
Every first order includes a usage guide and a surprise freebie — see what you get.
Start today
Take your first dose the day it arrives — don't wait for a 'perfect moment'.
Your 30-day journey starts today
Future you will look back on this moment.
Based on typical customer reports. Individual results vary. Backed by our 30-day guarantee.
Premium packaging, inside and out
Amber glass jar
Blocks UV degradation, no plastic leaching
100% recyclable
Jar, cap, and box are fully kerbside recyclable
No artificial fillers
No magnesium stearate, silicon dioxide, or titanium dioxide
- Free UK delivery over £35
- 14-day hassle-free returns
- Secure checkout, audit-logged
- Manually compliance-reviewed
Order dispatched, tracking info sent. Most customers take their first dose the day it arrives.
Research shows it takes ~14 days to anchor a new habit. By now, most customers have found their ideal time of day.
At 8 weeks, customers report the strongest improvements. Consistency is everything with nutritional supplements.
Over 90% of Medibro subscribers are still on the same product at 3 months — the clearest signal a supplement is working.
Vitamin C is essential for immune function, collagen synthesis, and antioxidant defence. Our buffered form (calcium ascorbate) is pH-neutral, making it significantly gentler on the stomach than regular ascorbic acid — ideal for sensitive digestive systems or high-dose use.
Each tablet provides 1000mg — over 12x the UK RNI. Vitamin C is water-soluble and excess is excreted harmlessly. 120 tablets = 4 months at 1 per day.
Benefits
- ✓Immune support
- ✓Collagen synthesis
- ✓Antioxidant
- ✓Iron absorption
- ✓Skin health
Dosing Guide
How to take Vitamin C 1000mg — Buffered Ascorbic Acid
Take 1–2 tablets daily. Best taken with food. For enhanced iron absorption, take with iron supplement.
Always read the label. Consult a healthcare professional if you have any medical conditions or take prescription medication.
Quality & transparency
Why form matters
Medibro uses
D3 + K2 (MK-7 form)
Long-acting MK-7
Others often use
D3 alone or K2 as MK-4
Lower bioavailability
MK-7 has a 72-hour half-life vs. MK-4's 1-hour — meaning it's active in your system all week.
K2 directs calcium to bones rather than arteries. Without K2, high-dose D3 can lead to soft-tissue calcium deposits. MK-7 is the clinically preferred form.
How we compare
Medibro vs. typical high-street / marketplace alternatives
| Feature | Medibro | Others |
|---|---|---|
| Ingredient quality | Premium grade | Generic grade |
| Third-party tested | ||
| No unnecessary fillers | ||
| UK manufactured | ||
| 30-day guarantee | ||
| Free UK shipping from £35 |
NHS recommends vitamin D supplementation
The NHS advises everyone in the UK to consider taking 10mcg vitamin D daily, especially from October to March when sunlight is insufficient.
Source: NHS.uk — Vitamin D
Vitamin D3 is more effective with:
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Your personalised stack
Recommended to pair with Vitamin C
What to expect over time
Blood serum vitamin D starts climbing. Most people don't notice changes yet — this is normal.
Serotonin synthesis improves with adequate D3. Many users notice improved mood and reduced fatigue.
T-cell activation is D3-dependent. Cold and flu resilience measurably improves.
Bone density, cardiovascular and cognitive benefits accumulate. Annual blood test should show 75–200 nmol/L.
⏰ How to take for best results
Best time
With food, once daily
Take with
Water or a meal
Avoid with
No specific interactions — check with your GP if on medication
Consistency is key. Take at the same time each day to build habit and maximise benefit.
Frequently asked questions
Find your perfect supplement stack
Answer 4 quick questions and get a personalised stack built around your goals, health history, and lifestyle.
Medibro Quality Score™
Independent assessmentPurity
92
Overall
out of 100
Potency
Value
How we compare
Medibro | Budget | Pharmacy | |
|---|---|---|---|
3rd-party COA testing | |||
Premium forms (glycinate, KSM-66, TG omega) | |||
Full ingredient transparency | |||
UK pharmacist reviewed | |||
No proprietary blends | |||
30-day money-back guarantee | |||
Eco-friendly packaging |
Comparison reflects general market observations. Specific brands may vary.
What outcomes matter most to you?
Founded by a UK pharmacist
“After 12 years dispensing prescriptions, I was frustrated by the gap between expensive supplements and what the evidence actually supports. Medibro was built to source properly — clinical doses, verified purity, fair prices.”
— MPharm, GPhC registered · Medibro founder
Every formula is reviewed by our in-house pharmacy team before launch.
Stack Synergies
Science-backed pairings for better results
Classic immune duo — Vitamin C and zinc attack pathogens through completely different pathways
Vitamin C is the essential co-factor for collagen synthesis — non-negotiable pairing for skin and joints
Take together to dramatically enhance non-haem iron absorption from food and supplements
Synergies based on published nutritional science. Individual results may vary. Always consult a healthcare professional before combining supplements.
Complete your stack
✨What customers say
From 20 reviews★ 4.5Customers appreciate the high dose of 1,000mg per capsule, which they find effective for immune function and skin benefits. The buffered form is gentle on the stomach, making it suitable for those with sensitivities.
Some users noted that while the product is generally well-received, a few experienced minor issues with the size of the capsules being difficult to swallow.
This supplement is ideal for individuals seeking a high-dose vitamin C option, particularly those with sensitive stomachs or those recovering from surgery.
Customer reviews
- ★★★★★Charlotte F.01/05/20261g per capsule is the right dose
100mg vitamin C supplements are too low to be meaningful. 1,000mg daily is where the evidence for immune function sits.
- ★★★★☆Freya Z.08/04/2026Good quality and value
High dose buffered C at a sensible price. No fillers or unnecessary additives. Good clean supplement.
- ★★★★☆Noah H.30/03/2026Good quality and value
High dose buffered C at a sensible price. No fillers or unnecessary additives. Good clean supplement.
- ★★★★☆James T.27/03/2026Good quality and value
High dose buffered C at a sensible price. No fillers or unnecessary additives. Good clean supplement.
- ★★★★★Grace S.09/03/2026Buffered form gentler on the stomach
Regular ascorbic acid upset my stomach. The buffered version is completely fine even on an empty stomach.
- ★★★★☆Ella U.09/03/2026Skin benefits too
The role of vitamin C in collagen synthesis is well established. My skin has been clearer since supplementing consistently.
- ★★★★★Chloe V.07/03/20261g per capsule is the right dose
100mg vitamin C supplements are too low to be meaningful. 1,000mg daily is where the evidence for immune function sits.
- ★★★★★Thomas A.20/02/2026Buffered form gentler on the stomach
Regular ascorbic acid upset my stomach. The buffered version is completely fine even on an empty stomach.
- ★★★★☆Sophie R.17/02/2026Skin benefits too
The role of vitamin C in collagen synthesis is well established. My skin has been clearer since supplementing consistently.
- ★★★★★Chloe V.14/02/2026Buffered form gentler on the stomach
Regular ascorbic acid upset my stomach. The buffered version is completely fine even on an empty stomach.
- ★★★★★Grace S.12/02/2026Buffered form gentler on the stomach
Regular ascorbic acid upset my stomach. The buffered version is completely fine even on an empty stomach.
- ★★★★☆Liam C.27/01/2026Good quality and value
High dose buffered C at a sensible price. No fillers or unnecessary additives. Good clean supplement.
- ★★★★★Jack N.27/01/20261g per capsule is the right dose
100mg vitamin C supplements are too low to be meaningful. 1,000mg daily is where the evidence for immune function sits.
- ★★★★☆Charlie D.14/01/2026Skin benefits too
The role of vitamin C in collagen synthesis is well established. My skin has been clearer since supplementing consistently.
- ★★★★★Hannah O.13/01/20261g per capsule is the right dose
100mg vitamin C supplements are too low to be meaningful. 1,000mg daily is where the evidence for immune function sits.
- ★★★★★Michael C.Verified buyer11/11/2025Post-surgery healing remarkable
Surgeon recommended high-dose vitamin C (ascorbate form, not ascorbic acid) for wound healing. Collagen synthesis requires vitamin C. My surgical wound healed noticeably faster than expected. GP confirmed good healing progress.
- ★★★★☆Susan P.18/10/2025Gentler form, same immune benefits
Switched from regular 1000mg C to this buffered version. No stomach sensitivity now and immune benefit (fewer winter illnesses) is the same. For those with sensitive stomachs this is the obvious choice.
- ★★★★★Dorothy F.Verified buyer02/09/2025Finally — high dose C that doesn't cause stomach issues
Regular vitamin C supplements at 1000mg caused acid reflux and stomach pain. The buffered (ascorbate) form is pH-neutral and completely tolerable even on an empty stomach. Blood plasma vitamin C now optimal on annual test.
- ★★★★☆Nicola T.Verified buyer30/08/2025Good quality, proper dose
1000mg buffered C with bioflavonoids — the bioflavonoids enhance absorption and synergise with vitamin C. Properly formulated rather than plain ascorbic acid. Immune function clearly improved this winter.
- ★★★★★David F.Verified buyer09/08/2025IV C replacement for home use
Hospital-grade IV vitamin C is impractical for regular use. High-dose oral buffered vitamin C is the next best option for sustained high plasma levels. Good quality sodium ascorbate with bioflavonoids.
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