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Product Description
Product Description
Vitamin C is a powerful antioxidant that supports immune health, nerves, eye health, collagen production, and blood vessels. Research shows that vitamin C neutralises free radicals and facilitates the body's ability to absorb iron from foods and supplements. Desert Harvest Buffered Vitamin C is bladder-friendly and gentle on the stomach.
All Desert Harvest supplements are gluten-free, bladder-friendly, and contain no fillers or artificial ingredients. We follow strict Good Manufacturing Practices and are cGMP compliant.
Ingredients: Each serving (1 capsule) contains 400 mg of Vitamin C (calcium ascorbate) buffered with 40 mg of calcium carbonate, 75 mg of Organic Aloe Vera (Leaf and Inner Gel) - which has been shown in studies to enhance the absorption of nutrients, and trace amounts of silicon dioxide (a naturally occurring mineral) as a drying agent.
Directions: As a food supplement, take one capsule twice a day or as directed by a qualified healthcare professional.
Food supplement. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. Consult a healthcare professional if pregnant, breastfeeding, or taking medication.
Buffered Vitamin C - Supports Immune Health
Buffered Vitamin C - Supports Immune Health
What you can expect:
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Product Description
Product Description
Vitamin C is a powerful antioxidant that supports immune health, nerves, eye health, collagen production, and blood vessels. Research shows that vitamin C neutralises free radicals and facilitates the body's ability to absorb iron from foods and supplements. Desert Harvest Buffered Vitamin C is bladder-friendly and gentle on the stomach.
All Desert Harvest supplements are gluten-free, bladder-friendly, and contain no fillers or artificial ingredients. We follow strict Good Manufacturing Practices and are cGMP compliant.
Ingredients: Each serving (1 capsule) contains 400 mg of Vitamin C (calcium ascorbate) buffered with 40 mg of calcium carbonate, 75 mg of Organic Aloe Vera (Leaf and Inner Gel) - which has been shown in studies to enhance the absorption of nutrients, and trace amounts of silicon dioxide (a naturally occurring mineral) as a drying agent.
Directions: As a food supplement, take one capsule twice a day or as directed by a qualified healthcare professional.
Food supplement. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. Consult a healthcare professional if pregnant, breastfeeding, or taking medication.
- Next-day processing (weekdays).
- Free shipping available.
- 30-day money-back guarantee.
Everyday urinary wellness
Buffered vitamin C, in a gentle, non-acidic form
400 mg of vitamin C as buffered calcium ascorbate — pH-neutral, not acidic — with a little aloin-free Desert Harvest aloe vera, in 90 vegan capsules. Vitamin C contributes to the normal function of the immune system. A calm daily food supplement, distributed across Europe by Bivio Medical.
Bladder-friendly immune support, every day
How Buffered Vitamin C supports immunity gently on a sensitive bladder
For people living with interstitial cystitis, a sensitive bladder or chronic pelvic discomfort, standard vitamin C supplements can be a problem — the acidity alone can trigger a flare. Desert Harvest Buffered Vitamin C delivers the immune and antioxidant benefits of vitamin C as calcium ascorbate, a pH-neutral form that studies suggest is far gentler on the bladder lining than conventional ascorbic acid.
Conventional vitamin C is ascorbic acid — and acid is precisely what many people with IC/BPS or a sensitive bladder work hard to avoid. Calcium ascorbate is vitamin C bound to calcium carbonate, which buffers the compound to a near-neutral pH. This means the body still receives the full antioxidant and immune-supporting action of vitamin C — neutralising free radicals, supporting collagen synthesis, aiding iron absorption and maintaining the integrity of blood vessels and nerves — without the acidic load that can irritate a compromised bladder wall. Each capsule also contains 75 mg of organic anthraquinone-free aloe vera, which studies suggest may enhance nutrient absorption, alongside trace silicon dioxide as a naturally occurring drying agent.
pH-neutral vitamin C
Calcium ascorbate delivers full vitamin C activity at a near-neutral pH, so the bladder does not encounter the acidity of standard ascorbic acid supplements.
Immune and antioxidant support
Vitamin C is well-established in research as a free-radical scavenger that supports immune function, collagen formation, iron absorption and vascular integrity.
Formulated for a sensitive bladder
No fillers, no artificial ingredients, gluten-free, and including organic purified aloe vera — the same thoughtful approach Desert Harvest applies to every supplement it makes for the IC/BPS community.
People with IC/BPS and bladder sensitivity who take Buffered Vitamin C report being able to maintain consistent vitamin C intake without the urinary urgency or discomfort they previously experienced with standard supplements. Responses vary from person to person, and it is a food supplement rather than a medicine — but for many it fills a genuine nutritional gap left by avoiding citrus and other high-acid foods on a bladder-friendly diet.
Desert Harvest has formulated supplements specifically for people with interstitial cystitis and a sensitive bladder for more than thirty years. Every product — including this one — is gluten-free, bladder-friendly, free of fillers and artificial ingredients, and produced to cGMP standards. The use of calcium ascorbate is a deliberate, informed choice for this community. Reviewed by the Desert Harvest Europe team. Last reviewed June 2026.
Questions people ask
Why can't people with IC/BPS take ordinary vitamin C?
Standard vitamin C is ascorbic acid, and acidity is a common trigger for interstitial cystitis and bladder sensitivity. Many people with IC/BPS follow a low-acid diet and find that citrus or ascorbic acid supplements bring on urgency, pain or a flare. Buffered Vitamin C uses calcium ascorbate — a pH-neutral form — so the body receives the same immune and antioxidant benefits without the acidic challenge to the bladder.
What is the difference between ascorbic acid and calcium ascorbate?
Ascorbic acid is the pure acid form of vitamin C. Calcium ascorbate is ascorbic acid bound to calcium carbonate, which neutralises its acidity and raises the pH to a level the bladder is far less likely to react to. The vitamin C activity — antioxidant protection, collagen synthesis, immune support — is equivalent, but the effect on bladder-sensitive individuals is generally much gentler.
Does the aloe vera in each capsule help with IC/BPS as well?
The organic purified aloe vera in each capsule (75 mg) is included primarily to enhance nutrient absorption, which studies suggest it does. It is not the same concentrated therapeutic dose as Desert Harvest Super-Strength Aloe Vera capsules, but it is the same quality Desert Harvest aloe — aloin-free and gentle on the bladder. People who want dedicated bladder support from aloe typically take the Super-Strength capsules alongside.
How much vitamin C does each capsule contain, and is that enough?
Each capsule provides 400 mg of vitamin C as calcium ascorbate, and the recommended dose is two capsules daily — 800 mg total. This sits comfortably within established safe daily intake levels while providing meaningful antioxidant and immune support. Because many people with IC/BPS avoid citrus fruits and other high-vitamin-C foods, a consistent supplement intake like this can be especially useful for maintaining adequate levels.
What's in every capsule
Vitamin C, gently buffered
Vitamin C as a buffered mineral ascorbate, with a little purified aloe vera — described plainly, in composition facts, using only the authorised EU nutrient claims.
Buffered, non-acidic form
Vitamin C as calcium ascorbate — a buffered, pH-neutral form — rather than acidic ascorbic acid. A gentler choice for sensitive systems.
Everyday immune support
Vitamin C contributes to the normal function of the immune system and to the protection of cells from oxidative stress — authorised EU claims. 400 mg per capsule.
An easy daily habit
90 vegan capsules with a little anthraquinone-free aloe vera. One capsule, up to twice a day, as part of a calm routine.
Why buffered
Vitamin C in a gentler, buffered form
Standard vitamin C is ascorbic acid, which is naturally acidic. This food supplement uses calcium ascorbate instead — a buffered, pH-neutral mineral form that delivers the same vitamin C, more gently.
Vitamin C contributes to the normal function of the immune system, to normal collagen formation, and to the protection of cells from oxidative stress — these are authorised EU claims. It also increases iron absorption from food.
The buffered form makes it a popular choice for people following a gentle, bladder-friendly or sensitive-stomach routine. We describe the composition plainly and let you decide where it fits.
Read the guideA fair comparison
Buffered Vitamin C vs ordinary ascorbic-acid vitamin C
| Composition | Desert Harvest Buffered Vitamin C | Ordinary ascorbic-acid vitamin C |
|---|---|---|
| Buffered, pH-neutral form (calcium ascorbate) | ✓ Yes | — No |
| Acidic form (ascorbic acid) | — No | ✓ Yes |
| 400 mg vitamin C per capsule | ✓ Yes | Varies |
| Includes aloin-free Desert Harvest aloe vera | ✓ Yes | — No |
| Vegan capsule, no added sugar or sweeteners | ✓ Yes | Often added |
| Third-party tested composition | ✓ Yes | Varies |
Good to know
Questions people ask
Can taking vitamin C irritate a sensitive bladder?
Is buffered (mineral ascorbate) vitamin C gentler than ascorbic acid?
What is the difference between mineral ascorbate and ascorbic acid?
Which vitamins and minerals are best to take with a sensitive bladder?
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Rated 4.85 out of 5 by Desert Harvest customers
Desert Harvest is one company worldwide. These are reviews from the wider Desert Harvest community — our European reviews are still growing.
“Great product been using for several years now”
Christina Richardson
“I have been using this products for 20 years, it was best vitamin C.”
chong krick
“This product makes it possible to take vitamin C without fear of an IC flare i take it daily”
Tammy Rose
Urinary comfort & bladder wellbeing — the guide · All articles · Quercetin · Probiotic with live cultures · Super-Strength Aloe Vera
Food supplement. Not a substitute for a varied, balanced diet and a healthy lifestyle. Do not exceed the recommended daily dose. Keep out of reach of children. Consult a healthcare professional before use if pregnant, breastfeeding, taking medication, or if you have a medical condition. This is a food, not a medicine; no medical claims are made about this product. Made in the USA by Desert Harvest Ltd. Imported into the EU by BIVIO Medical B.V., Zuideinde 91, 1843 JM Grootschermer, Netherlands.
Organic Aloe Vera
Grown in nutrient-rich volcanic soil to maximize potency, purity, and health benefits from the very start.
Patented Harvesting Process
A unique method begins within 20 minutes of harvest to lock in nutrients and remove harmful latex compounds.
Bladder & IC Friendly
Formulated specifically to support bladder health and Interstitial Cystitis, trusted by patients worldwide.
Trusted by Experts
Recommended by urologists, pelvic pain specialists, and IC/BPS communities for over 30 years.
From Farm To Bottle
Fresh Harvest
At Desert Harvest, we harvest aloe leaves and begin processing within just 20 minutes to lock in their full nutritional power. This rapid method preserves delicate bioactive compounds that are often lost in slower processing, ensuring maximum potency, purity, and effectiveness in every capsule for optimal pelvic and bladder health.
Latex Removal
Our specialized latex removal process ensures that only the purest aloe vera gel is used in our supplements, eliminating any potentially irritating compounds while preserving the beneficial properties.
Freeze Dried
Through our advanced freeze-drying technology, we preserve the natural structure and potency of aloe vera, creating a stable, concentrated form that maintains its therapeutic benefits.
Certified
Through our advanced freeze-drying technology, we preserve the natural structure and potency of aloe vera, creating a stable, concentrated form that maintains its therapeutic benefits.
Direct Supply
Through our advanced freeze-drying technology, we preserve the natural structure and potency of aloe vera, creating a stable, concentrated form that maintains its therapeutic benefits.
Volcanic Soil
Through our advanced freeze-drying technology, we preserve the natural structure and potency of aloe vera, creating a stable, concentrated form that maintains its therapeutic benefits.