Longevity Supplements help centre

Help Center

Help Center

Frequently Asked Questions

Which is best, NMN or NR?

Is your NMN lab tested?

Is it true NMN needs to be refrigerated?

What are the best value products (gram per £)?

What age should I begin boosting my NAD?

Where should I store my NMN?

Are NMN & NR safe for human consumption?

Will your products help with my illness or disease?

Will you expand your range in the future?

What will happen after Brexit?

Where do you deliver?

How much does delivery cost?

Can I order over the phone?

What is your returns policy?

Do you ship internationally?

When will my order ship?

How to return?

How do I view the status of my order?

How do I pay for my subscription orders?

How do I amend my personal details for my subscription order?

Can I amend the frequency of my subscription?

Can I delay or bring forward my subscription order?

How do I update my payment details?

How do I cancel my subscription?

How do I subscribe/unsubscribe to emails?

I've got a new email address, how do I change it?

I've forgotten my password, how do I get in?

I have moved house, why haven't my details changed as I have notified you by email?

What happens if I have paid with Klarna instalments and make a return?

There's something wrong with my Klarna installment order. Do I still need to pay for it?

I have not received my Klarna installment order. What happens to my statement?

My Klaran installment statement is incorrect. What should I do?

What happens if I don’t pay for my Klarna Pay in 3 instalments order?