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Privacy Policy

Last updated: 16 October 2026

This policy explains how Stock Retail Limited, trading as NADFlow, handles personal information when you visit nadflow.co.uk, contact us or place an order.

1. Who we are

Stock Retail Limited is the data controller for personal information collected through this website. We are registered in England and Wales under company number 13614576.

Registered office:
1043a Old Leeds Road
Bradford
West Yorkshire
BD3 7DB
United Kingdom

For privacy questions or requests, email info@nadflow.co.uk.

2. Personal information we collect

Depending on how you use the site, we may handle your name, email address and the subject and content of a message you send through the contact form. If you request a questionnaire follow-up, we also handle your name, email address and the single reason category you choose to share; that category may reveal health information.

If you place an order, Stripe Checkout collects the information needed to take payment and arrange delivery, such as your contact, billing and delivery details and transaction information. We receive the order and payment information needed to respond to you and fulfil the order. Your full card details are entered directly with Stripe.

Our website hosting and security services may also process technical information such as your IP address, browser and device details, pages visited, timestamps and error or security logs to operate and protect the site.

3. Purchase questionnaire

The purchase questionnaire runs in your browser. Your answers are used by the page to decide whether the purchase journey can continue, needs follow-up or must stop. The answers are not sent to NADFlow or Stripe and are not saved on our website; they remain in your browser and are cleared when you close or refresh the form.

If the result is a hold or stop, you may optionally request contact. Only if you complete that form and tick its separate explicit-consent box do we send your name, email address and one reason category you select to info@nadflow.co.uk through FormSubmit. The category may reveal health information. We do not send your other questionnaire answers or the optional free-text health details. If you do not submit the form and consent, no follow-up information is sent. You can withdraw consent by emailing info@nadflow.co.uk.

This is an automated purchase-flow check, not a medical assessment or confirmation that the product is suitable for you. Only the selected product option is sent to Stripe Checkout.

Contact form messages are separate from this follow-up form. They pass through FormSubmit and are forwarded to our support email.

4. Why we use information

We use personal information to respond to questions, manage orders and payments, arrange delivery, provide customer support, meet legal and accounting duties, and protect the website and our customers.

We rely on your consent to respond to an optional questionnaire follow-up request. Where the reason category may reveal health information, we rely on your explicit consent for that information. You can withdraw consent by emailing info@nadflow.co.uk. For other activities, we rely where relevant on steps needed to enter into or perform a contract, our legal obligations and our legitimate interests in running the business, answering enquiries and preventing misuse. Questionnaire answers remain local in your browser unless you submit and consent to the limited follow-up described in section 3.

5. Contact form messages

The contact form asks for your name, email address, subject and message so that we can respond. Your submission is sent through FormSubmit to info@nadflow.co.uk. FormSubmit says it retains form submissions for 30 days. Copies of messages delivered to our inbox may be kept for as long as reasonably needed to handle the enquiry and any related record-keeping or legal claim.

Read FormSubmit’s privacy information and its submission-retention information. If you would rather not use the form, email us directly at info@nadflow.co.uk.

6. Orders and payments

When you continue to checkout, we send Stripe the selected product and quantity. Stripe Checkout then collects the details needed to take payment and arrange delivery. Stripe processes payment information under its own privacy information and may also process information for security, fraud prevention and legal purposes.

We do not ask you to enter card details into the NADFlow website. Read Stripe’s Privacy Center for details about its handling of personal information.

7. Cookies and similar technologies

The current NADFlow website does not add analytics or advertising cookies. Our hosting or security providers may use strictly necessary technical storage or logs to deliver and protect their services. Stripe and other third-party services may use their own technologies when you visit them. Their privacy and cookie information applies to those services.

If we add cookies or similar technologies that require your choice, we will update this policy and provide the appropriate information and controls.

8. Who we share information with

We share information only where needed for the purposes above. This may include FormSubmit for contact-form delivery and for questionnaire follow-up requests you explicitly consent to; Stripe for checkout and payment processing; website hosting and security providers; delivery companies that fulfil orders; and professional advisers, regulators or public authorities where needed or required by law.

We do not sell your personal information.

9. Processing outside the UK

Some service providers may process information in countries outside the United Kingdom. Their locations and transfer arrangements can depend on the service used. Where UK data protection law requires a transfer safeguard, the relevant provider and transfer terms must provide an appropriate safeguard. Contact us at info@nadflow.co.uk if you would like details about a particular transfer.

10. How long we keep information

FormSubmit says it retains contact-form submissions for 30 days; the same submission period applies to questionnaire follow-up requests. We may keep the copy delivered to our inbox for as long as needed to respond and deal with the request. The submission includes the consent confirmation and timestamp so we can record the permission given.

Order and transaction records are kept for the periods needed to fulfil the order, meet tax, accounting and other legal duties, and handle disputes or claims. Technical records are kept for the period needed for security and site operation, subject to the hosting provider’s retention settings.

11. Keeping information secure

We use reasonable measures to protect personal information and use service providers that support the website, messaging and checkout. No internet transmission or storage system can be guaranteed to be completely secure.

12. Your data protection rights

Depending on the circumstances, you may have the right to ask for a copy of your personal information, correct inaccurate information, request erasure or restriction, object to certain processing, or ask for information in a portable format. You can also withdraw consent where processing is based on consent. These rights are subject to legal conditions and exceptions.

To make a request, email info@nadflow.co.uk. You can withdraw consent to a questionnaire follow-up by emailing us. We may need to confirm your identity before responding.

13. Choices and required information

You can choose not to submit a contact form or request a questionnaire follow-up. The follow-up form is optional; you can leave it blank or decline consent, and your purchase questionnaire answers will not be sent to NADFlow. To place an order, you must provide the information Stripe requires for payment and delivery. You must complete the purchase questionnaire to continue through the purchase journey.

14. Children

The purchase journey is for adults aged 18 or over and is not intended for children. We do not knowingly seek to collect personal information from anyone under 18 for a purchase. If you believe a child has sent us personal information, contact us so we can review and delete it where appropriate.

15. Changes to this policy

We may update this policy when our website, services or data handling changes. The latest version and its update date will be published on this page.

16. Questions or complaints

Contact us first at info@nadflow.co.uk if you have a question about how we use your information.

You can also complain to the UK Information Commissioner’s Office (ICO) at ico.org.uk/make-a-complaint.

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© 2026 NADFlow · Stock Retail Limited · Company no. 13614576
Bradford, West Yorkshire · info@nadflow.co.uk
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DISCLAIMER: These statements have not been evaluated by the Food Standards Agency. NADFlow products, including our NAD+ pens and supplements, are intended to support a healthy lifestyle and are not designed for diagnosing, treating, curing, preventing, or managing any disease or medical condition. Always consult with a healthcare professional before using any dietary supplement, especially if you are pregnant, breastfeeding, or taking medication. Do not exceed the recommended daily dosage. Keep out of reach of children. Supplements should not be used as a substitute for a balanced diet and healthy lifestyle.

NADFlow · Before checkout

A few questions before checkout

PART 1 OF 2
01 / 02

Answer a few short questions accurately. You must be 18 or over and completing them for yourself.

Your information: these questions are based on the product’s written safety information. A clear result is not a medical assessment or confirmation that the product is suitable for you.
1. Are you aged 18 or over?
2. Is this product for your own use?

Review each short note, then answer the health questions about yourself. Select Yes only when you understand each safety point and can follow it. If you need advice, checkout pauses so you can ask a qualified healthcare professional.

View key product safety information

Do not use if you are under 18, pregnant or breastfeeding. If you have a medical condition, take prescription medication, are receiving intensive medical treatment, have an allergy, or are unsure whether NAD+ is suitable for you, speak to a qualified healthcare professional before use. Keep the pen refrigerated at 2–8°C, do not freeze it, and refrigerate it promptly on arrival. Dispose of used needles safely in a sharps container. Review the product information on the NADFlow website.

4. Are you pregnant or breastfeeding?

The product information says not to use the product if you are pregnant or breastfeeding.

5. Do you have a medical condition, take prescription medication, or receive intensive medical treatment?

This follows the product information. A “Yes” or “Unsure” answer pauses the purchase journey so you can seek professional advice.

6. Do you have a known allergy to an ingredient, or have you had a reaction to an injectable product?

If yes or unsure, speak with a qualified healthcare professional before continuing.

7. Are you comfortable using an injection pen?

If you are not comfortable, or are unsure, checkout pauses so you can seek guidance.

8. Keep the pen refrigerated at 2–8°C, do not freeze it, and refrigerate it promptly on arrival. Dispose of used needles safely in a sharps container. Do you understand these requirements and have what you need to follow them?

If you do not have refrigeration or a sharps container, or you are unsure, choose No.

9. Have you read the product information and do you confirm that none of its stated exclusions apply to you?

This is a separate eligibility check. Yes means you have read the information and none of its stated exclusions apply to you.

Would you like us to contact you?

Leave your details if you would like NADFlow to follow up. We’ll send only your name, email address and the reason category you choose. Your other questionnaire answers and any optional health details are not sent.

NADFlow Pen · 1 pen£249
Secure checkout

Your answers allow you to continue. Payment is completed securely on Stripe Checkout.

Your questionnaire answers stay in this browser and are cleared when you close or refresh the form. If you request a follow-up and explicitly consent, only your name, email address and selected reason category are sent to NADFlow.

NADFlow purchase questionnaire. Your answers stay in this browser. If you request a follow-up and explicitly consent, only your name, email address and selected reason category are sent to NADFlow. Only your selected product option is passed to Stripe Checkout. Privacy Policy.