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Next-day processing (weekdays).
Orders placed on weekdays are dispatched the same or next working day from our warehouse in the Netherlands.
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Calcium & Vitamin D3 - Supports Bone Health
Calcium & Vitamin D3 - Supports Bone Health
What you can expect:
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-
Next-day processing (weekdays).
Orders placed on weekdays are dispatched the same or next working day from our warehouse in the Netherlands.
Shipping policy → -
Free shipping available.
Shipped from our warehouse in the Netherlands. As the official European distributor, we ensure the quality you expect — duties and taxes included for EU orders.
Shipping policy → -
30-day money-back guarantee.
If it is not right for you, return it within 30 days for a full refund — just send it back.
Shipping policy →
Bladder-friendly daily nutrition
Everyday calcium and vitamin D3, gently formulated
500 mg calcium as gentle calcium carbonate, with vitamin D3 and a little Desert Harvest aloe vera, in 90 vegan capsules. Calcium and vitamin D contribute to the maintenance of normal bones. A calm daily food supplement, distributed across Europe by Bivio Medical.
For bladder-friendly bone & mineral support
How Calcium & Vitamin D3 supports bone health without aggravating a sensitive bladder
Many people with a sensitive bladder or interstitial cystitis avoid calcium supplements out of concern that they will increase urinary acidity. Calcium carbonate works differently — it is an alkalising mineral that may actually help neutralise the acids in food and drink that are known to trigger bladder symptoms. Paired with Vitamin D3 for absorption, this formulation is designed to give you the bone and mineral support you need without compromise.
Calcium carbonate is a naturally alkaline compound. Studies suggest it may neutralise up to 95% of the free acid in food and drinks before it reaches the urinary tract, which may help reduce the acidity in urine that people with a sensitive bladder often find problematic. Vitamin D3 works synergistically with calcium, supporting its absorption in the gut and its regulation alongside phosphorus in the body — processes that are essential for maintaining bone density and structure. The formulation also includes 40 mg of Organic Aloe Vera — anthraquinone-free and freeze-dried — which studies suggest may further enhance nutrient absorption.
Alkaline calcium — not acidic
Calcium carbonate is an acid-reducing mineral that studies suggest may neutralise dietary acids before they reach the bladder, unlike calcium citrate and other acidic forms.
D3 for proper calcium absorption
Vitamin D3 works in tandem with calcium to support absorption and regulate the minerals needed for bone density and healthy muscle and nerve function.
No fillers, no bladder triggers
Gluten-free, free from artificial ingredients and common irritants — formulated for people who need to be careful about everything they put into their body.
People with a sensitive bladder and those managing interstitial cystitis who take this supplement report being able to maintain their calcium intake without the bladder flares they experienced with other calcium forms. Responses vary, and this is a food supplement rather than a medicine — but the combination of an alkaline mineral form with a bladder-friendly, no-filler formulation makes it a practical choice for long-term bone support.
All Desert Harvest supplements are formulated without fillers, artificial ingredients, or gluten, and are produced to cGMP standards. Calcium & Vitamin D3 has been used by people with interstitial cystitis and a sensitive bladder for over thirty years as part of Desert Harvest's range of bladder-friendly supplements. Reviewed by the Desert Harvest Europe team. Last reviewed June 2026.
Questions people ask
Can people with a sensitive bladder or IC take calcium supplements?
Many people with interstitial cystitis and a sensitive bladder are concerned that calcium supplements will increase urinary acidity and worsen symptoms. Calcium carbonate — the form used in this supplement — is alkaline rather than acidic, and studies suggest it may actually help neutralise dietary acids. It is a food supplement, not a medicine, and individual responses vary, but it is a form that people with a sensitive bladder have used for decades as part of the Desert Harvest range.
Why does this formula include Vitamin D3?
Vitamin D3 is required for the body to absorb and regulate calcium effectively. Without adequate Vitamin D3, calcium absorption in the gut is significantly reduced. The two work synergistically — calcium for the mineral itself, D3 to ensure it is taken up properly and plays its role in bone structure and muscle function.
What does the Organic Aloe Vera in the formula do?
The 40 mg of Organic Aloe Vera included in each serving is present to support nutrient absorption. Studies suggest that aloe vera may enhance the uptake of vitamins and minerals taken alongside it. All aloe naturally contains aloin and other anthraquinones; the aloe used here has had them removed through a patented decolourising process, giving the same purified, acemannan-rich preparation that underpins Desert Harvest's thirty-year focus on bladder-friendly supplementation.
How much calcium does this supplement provide, and is it enough?
Each serving of two capsules provides 500 mg of calcium carbonate and 200 IU of Vitamin D3. The recommended daily intake of calcium for adults is typically 700–1,000 mg, so this supplement is designed to complement dietary calcium rather than replace it entirely. It is best taken with food, twice daily as directed, or as advised by a qualified healthcare professional.
What's in every serving
Calcium and vitamin D for everyday bones
A simple calcium-and-vitamin-D food supplement with a little aloe vera — described plainly, in composition facts, using only the authorised EU nutrient claims.
Calcium & vitamin D for bones
Calcium and vitamin D contribute to the maintenance of normal bones — authorised EU claims. Each serving provides 500 mg calcium with vitamin D3.
Vitamin D3, the everyday form
Vitamin D3 (cholecalciferol) contributes to the normal absorption and use of calcium and to the normal function of the immune system — useful through the darker Northern-European months.
Made for dairy-free routines
A gentle way to top up calcium if you follow a restricted or dairy-free, bladder-friendly diet. Vegan capsules with calcium carbonate and a little aloe vera.
How it fits your day
A daily calcium and vitamin D built around a bladder-friendly routine
Calcium is one of the nutrients people most often miss when they follow a restricted or dairy-free, bladder-friendly diet. This is a simple daily food supplement that pairs calcium with vitamin D3 and a little Desert Harvest aloe vera.
Calcium and vitamin D contribute to the maintenance of normal bones, and vitamin D contributes to the normal absorption and use of calcium and to the normal function of the immune system — these are authorised EU claims. Vitamin D is also harder to make from sunlight through the darker Northern-European months.
The calcium is provided as gentle calcium carbonate in vegan capsules. We describe the composition plainly and let you decide where it fits your routine.
Read the guideA fair comparison
Desert Harvest Calcium & Vitamin D3 vs an ordinary calcium tablet
| Composition | Desert Harvest Calcium & Vitamin D3 | An ordinary calcium tablet |
|---|---|---|
| 500 mg calcium per serving | ✓ Yes | Varies |
| Includes vitamin D3 (cholecalciferol) | ✓ Yes | Varies |
| Includes aloin-free Desert Harvest aloe vera | ✓ Yes | — No |
| Gentle calcium carbonate form | ✓ Yes | Varies |
| Vegan capsule, no added sugar or sweeteners | ✓ Yes | Often added |
| Third-party tested composition | ✓ Yes | Varies |
Good to know
Questions people ask
Do I need more calcium and vitamin D after the menopause?
Can a restricted bladder-friendly diet leave you short of vitamin D or calcium?
Which vitamins and minerals are best to take with a sensitive bladder?
How should I take this without upsetting a sensitive bladder?
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Read →What people say
Rated 4.88 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.
“Still hard to know for sure. Think it’s helping my IC.”
Jane Powell
“It is a great product and it doesn’t upset my interstitial cystitis.”
Stephanie Guyer
“Desert Harvests seems to emphasize quality and purity in their products/”
Kathie DeRobbio
Bladder-friendly daily nutrition — the guide · All articles · Collagen · Buffered Vitamin C · Food acid & the bladder
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.