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- £131.24
- £131.24
- Unit price
- per
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Deliveries to United Kingdom’s outer and remote regions may experience seasonal delays caused by severe weather or limited carrier availability. We appreciate your patience and recommend allowing additional time for your order to arrive safely.
XYMOGEN HistDAO is a targeted diamine oxidase (DAO) enzyme supplement designed to support digestive processes by aiding the breakdown of food-derived histamine. Each tablet delivers 20,000 HDU of DAO, a potency chosen to provide a full serving in a single pill and simplify daily use.
In a thoughtful reformulation, the serving size moved from two capsules to one tablet, delivering the same enzyme strength in a compact, easy-to-take format. This design aims to fit seamlessly into daily routines without sacrificing potency.
HistDAO acts locally in the digestive tract, with the enzyme working in the gut rather than circulating through the bloodstream. The product has been clinically tested to assess its ability to break down histamine from meals within the gut. Individual experiences may vary, and results can depend on diet and routine.
This single tablet brings together digestive health, immune considerations, and gastrointestinal wellness in one formula. The formulation emphasizes a practical, everyday approach to enzyme nutrition and a focus on gut-specific action rather than systemic activity.
Take 1 tablet with meals to reach a full serving. For best consistency, use as part of your regular routine and store in a cool, dry place away from heat.
Allergen and quality notes: HistDAO is designed to be free from wheat, gluten, yeast, soy, dairy products, fish, shellfish, peanuts, tree nuts, eggs and artificial colors, sweeteners or preservatives, making it a practitioner trusted option for many seeking targeted digestive support.
Q: What makes HistDAO different from other digestive enzyme supplements?
A: HistDAO delivers 20,000 HDU of diamine oxidase per tablet to support histamine breakdown in the gut; it acts locally and is not absorbed into the bloodstream.
Q: How should I take HistDAO for best results?
A: Take 1 tablet with meals to reach a full serving. Store in a cool, dry place; consult a professional if you have food sensitivities.
Thank you for shopping with British Vita.
We proudly provide fast, reliable, and completely free delivery across the United Kingdom.
This policy explains how we handle order processing, delivery timeframes, and shipping terms for all UK-based purchases.
British Vita is a UK-registered business. Some products may be fulfilled through our international logistics and warehouse network to ensure product availability and efficient distribution. However, all orders are delivered to customers within the United Kingdom only.
We currently ship exclusively within the United Kingdom, including:
Deliveries are available for residential and business addresses, as well as P.O. Boxes.
We do not offer international shipping at this time.
All orders include free standard shipping with no minimum spend required.
No additional courier, handling, or service fees apply.
Orders are processed within 2–3 business days (Monday–Friday) after payment confirmation.
You will receive:
During peak seasons (holidays, promotions), processing may extend up to 5 business days.
We work with trusted UK courier partners, including Royal Mail, Evri, DPD, and Parcelforce.
| Delivery Area | Estimated Delivery Time | Notes |
|---|---|---|
| UK Mainland | 3–5 business days | Total delivery timeframe including processing + transit |
| Remote Areas, Highlands & Islands | 6–10 business days | Transit may vary depending on courier routes |
| Exceptional Circumstances | 6–10 business days | Weather events, strikes, or postal delays |
While most parcels arrive promptly, British Vita cannot guarantee exact delivery dates due to courier or weather-related factors.
Once dispatched, you will receive an email with your tracking number and courier information.
Use the tracking link to monitor your delivery status.
If you have not received tracking details within 5 business days, please contact us:
📧 britishvita.uk@gmail.com
Delivery delays may occur due to:
If your parcel has not arrived within 10 business days after dispatch, please contact our customer support team.
Please ensure that the shipping address provided is complete and accurate.
Parcels returned due to incorrect addresses may require additional time for redelivery.
If a package is returned to our warehouse, we will contact you to arrange redelivery.
If your parcel arrives damaged or items are missing, please notify us within 48 hours:
📧 britishvita.uk@gmail.com
Please include:
We will resolve the issue as quickly as possible.
British Vita – Customer Service
📍 82 A James Carter Road, Mildenhall, Bury Saint Edmunds, IP28 7DE, United Kingdom
✉️ britishvita.uk@gmail.com
We offer a 30-day return policy. This means you have 30 days after receiving your order to request a return, even if the issue is caused by the seller.
To be eligible for a return, your item must be unused, unopened, and in its original packaging. The safety seal on supplement products must remain intact for hygiene reasons. Proof of purchase is required.
We do not accept returns for opened products, used items, or products damaged by customer handling. Only sealed and unused products that arrive undamaged qualify for return.
Please inspect your order upon delivery and contact us immediately at britishvita.uk@gmail.com if your item arrives damaged, defective, incorrect, or expired. We will resolve the issue promptly.
Customer-caused damage, opened items, or improperly stored items cannot be returned or refunded.
To initiate a return, contact us at britishvita.uk@gmail.com. Once your request is approved, you will receive a Return Authorisation (RMA), instructions, and—where applicable—a prepaid return label.
Returns sent without prior approval will not be accepted.
British Vita – Returns Department
6 Shea Way, Newark
DE 19713, United States
Important: Our products are fulfilled through our international logistics and warehouse network in the United States. Although British Vita is a UK-registered business, approved product returns must be sent to our designated returns warehouse in the United States for inspection, processing, and refund handling.
Products are distributed to customers in the United Kingdom through this fulfilment network. For this reason, the returns address may be located in a different country from our registered company address.
British Vita – Headquarters
82 A James Carter Road
Mildenhall, Bury Saint Edmunds
IP28 7DE, United Kingdom
Please note: This is our registered company and administrative address only. Returns cannot be accepted at this location. All approved returns must be sent to the official returns address listed above.
The following items cannot be returned:
For exchanges, please return the original item first. Once your return is accepted, you may place a new order for the replacement product.
If your order is delivered to an EU country, you have 14 days to cancel or return it for any reason. Items must remain unused, unopened, and in their original packaging.
Once your return is received and inspected, we will notify you of the approval status. If approved, your refund will be processed to your original payment method within 10 business days.
Please allow additional time for your bank or card issuer to finalise the refund. If 15 business days pass after approval and you still have not received your refund, contact us at britishvita.uk@gmail.com.
We work with trusted UK courier partners, including Royal Mail, Evri, DPD, and Parcelforce.
| Delivery Area | Estimated Delivery Time | Notes |
|---|---|---|
| UK Mainland | 3–5 business days | Most parcels arrive within this timeframe. |
| Remote Areas, Highlands & Islands | 6–10 business days | Delivery times may vary based on courier routes. |
| Exceptional Circumstances | 6–10 business days | Possible during severe weather or postal delays. |
While most packages arrive promptly, British Vita cannot guarantee exact delivery dates due to factors outside our control, including weather conditions, strikes, customs processing, or courier delays.
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