Frequently Asked Questions
Find answers to the most common questions about our products, shipping, and subscriptions.
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We manufacture every product in our GMP‑certified facility in Oxfordshire, UK, and every single batch is independently tested by ISO 17025‑accredited laboratories. We have completed 129 individual tests across 37 products — and we publish the certificates so you can verify your exact batch at testing.nfsupplements.co.uk. We have 445+ reviews on Trustpilot (read them here), and our products have been featured in Forbes, The Washington Times, Apple News, International Business Times, and Digital Journal. Very few supplement companies offer that level of transparency.
GMP stands for Good Manufacturing Practice. It is a set of regulatory standards enforced by bodies such as the MHRA (UK) and FDA (US) that govern every step of the manufacturing process — from raw‑material sourcing and facility cleanliness to production controls and final‑product testing. A GMP‑certified facility must pass regular independent audits to prove it consistently produces supplements that meet exact label claims for identity, purity, strength, and composition. Our Oxfordshire facility holds this certification, giving you confidence that what's on the label is exactly what's in every capsule.
Yes. Every batch is independently tested by ISO 17025‑accredited laboratories. To date we have completed 129 individual tests across 37 products. You can look up the certificate of analysis for your specific batch number at testing.nfsupplements.co.uk.
Independent lab SORA Laboratories tested five leading nattokinase supplements side‑by‑side. The result: 4 out of 5 competitors failed their own label claims — some by more than 33 %. Our Nattokinase was the only product that passed, verified at > 6,720 FU per capsule — that's 34 % above our 5,000 FU label claim. You can read the full independent report at nattokinasereviews.com. We apply the same rigorous standards to every product we make.
All of our supplements are manufactured in our GMP‑certified facility in Oxfordshire, United Kingdom. We use recyclable packaging and operate as a carbon‑neutral company.
The majority of our range uses plant‑based capsule shells and is suitable for vegans. Check the individual product page for specific dietary information, or email us at info@nfsupplements.co.uk if you're unsure.
Nattokinase is an enzyme extracted from nattō, a traditional Japanese food made from fermented soybeans. It has been used in Japan for centuries and is studied for its role in supporting cardiovascular health.*
We offer two strengths: 5,000 FU and 10,000 FU per capsule. Both are manufactured in our GMP‑certified Oxfordshire facility and independently verified by ISO 17025‑accredited labs. In fact, our 5,000 FU capsules were verified at > 6,720 FU — 34 % above the label claim.
Take one capsule daily, preferably on an empty stomach or between meals for optimal absorption. It can also be taken with food if preferred.
If you are taking anticoagulants (e.g., warfarin, heparin) or antiplatelet medication, you should consult your healthcare provider before taking Nattokinase. Nattokinase may support healthy circulatory function, so professional guidance is important if you are already on related medication.*
Vitamin K plays a role in blood clotting and can interact with blood‑thinning medications. To make our Nattokinase formula suitable for the widest possible range of customers — including those on anticoagulant therapy (under medical supervision) — we removed Vitamin K from the formulation.
Results vary from person to person. Most customers report noticeable benefits after 8–12 weeks of consistent daily use. We recommend giving any supplement a fair trial period before assessing results.
Yes. Many customers take Nattokinase alongside our Blood Pressure Support and Cholesterol Support as part of the Heart Health Starter Kit. As always, consult your healthcare provider if you are on any medication.*
Our Nattokinase Arterial Support formula also contains Oregano and Motherwort, both selected for their traditional use in supporting cardiovascular wellness.* Full ingredient lists and amounts are printed on every product label.
We recommend that pregnant or breastfeeding women consult their doctor or midwife before taking any dietary supplement, including Nattokinase.
Blood Pressure Support is a daily capsule formulated with Beetroot extract, Magnesium, and Potassium — nutrients studied for their role in supporting healthy blood‑pressure levels already within a normal range.* It is manufactured in our GMP‑certified UK facility.
Take one capsule daily with water. It can be taken with or without food.
Please consult your doctor before combining any supplement with prescribed medication. Your healthcare provider can advise whether Blood Pressure Support is appropriate alongside your current treatment plan.*
Individual responses vary. Clinical research on beetroot extract has shown measurable changes after 8–12 weeks of daily use. We recommend consistent use over this period before drawing conclusions.*
Absolutely. Many of our customers take both products together — in fact that's exactly what the Heart Health Starter Kit is designed for. As always, check with your healthcare provider if you're on medication.*
Blood Pressure Support is made from natural ingredients and is generally well tolerated. If you experience any discomfort, discontinue use and consult your healthcare provider.
Cholesterol Support is a daily capsule featuring Red Yeast Rice (providing Monacolin K) and Reishi mushroom. Monacolin K from red yeast rice carries an EU‑authorised health claim: it contributes to the maintenance of normal blood cholesterol levels at a daily intake of 10 mg. Manufactured in our GMP‑certified UK facility and third‑party tested.
Take one capsule per day. It can be taken with or without food — preferably on an empty stomach or between meals for optimal absorption.
Monacolin K works via a similar mechanism to statin medications. You should not combine Cholesterol Support with statins without first consulting your doctor, as this may increase the risk of side effects. Always speak with your healthcare provider before making changes to your supplement or medication routine.*
Individual results vary. We recommend consistent daily use for at least 8–12 weeks before having your cholesterol levels re‑tested by your doctor. Supplements work best alongside a balanced diet and active lifestyle.*
Cholesterol Support is generally well tolerated. Because it contains Monacolin K, which acts similarly to statins, individuals with a history of liver or muscle conditions should consult their healthcare provider before use. Discontinue and seek medical advice if you experience unexplained muscle pain or weakness.
Blood Sugar Support is a daily capsule built around Berberine, a bioactive compound extracted from several plants. Berberine has been extensively studied for its role in supporting healthy blood‑sugar levels already within a normal range.* Manufactured in our GMP‑certified UK facility and independently tested.
Take one capsule daily with food. Consult the product label for the specific dosage recommendation.
Berberine may influence blood‑sugar levels, so it is essential to consult your doctor before combining it with metformin, insulin, or any other diabetes medication. Your healthcare provider can help you monitor levels and adjust dosages safely.*
Published research on berberine typically measures outcomes over 8–12 weeks of daily use. We recommend giving the product a consistent trial over this period, combined with a balanced diet and regular exercise, before drawing conclusions.*
Visit nfsupplements.co.uk/tools/recurring/login and log in with the email address you used when you placed your order. From there you can view upcoming orders, swap products, change quantities, update your delivery address or payment method, and more.
On the login page, click "Get a login link" to receive a secure, one‑time link to your email. If you still can't access your account, email us at info@nfsupplements.co.uk and we'll sort it out for you.
Yes. Log in to your subscription portal at nfsupplements.co.uk/tools/recurring/login and select Pause on the subscription you'd like to hold. You can resume it at any time — your discount will still apply when you restart.
You can cancel at any time — there is no minimum commitment. Log in at nfsupplements.co.uk/tools/recurring/login and click Cancel on the relevant subscription. Alternatively, email us at info@nfsupplements.co.uk and we'll take care of it for you.
Yes. Inside your subscription dashboard you can reschedule your next delivery date, switch between monthly and multi‑month frequencies, or skip individual shipments. Changes take effect immediately as long as your next order hasn't already been processed.
In most cases, yes — you can swap to a different product or strength directly inside your subscription portal. If the option isn't available for your particular plan, email us at info@nfsupplements.co.uk and we'll update it manually.
Log in at nfsupplements.co.uk/tools/recurring/login and navigate to your account settings. You can update your card details, switch payment methods, and change your shipping address. Make sure to save changes before your next order is processed.
No. There are no cancellation fees. Once you cancel, no further payments will be taken. Any order that has already been dispatched will still be delivered as normal.
Orders placed before the cut‑off time are dispatched same day; orders placed after the cut‑off are dispatched the next working day.
Standard UK delivery typically takes 1–3 working days after dispatch. International delivery times vary by destination — usually 5–13 working days depending on the shipping option selected at checkout.
Yes. We ship worldwide. Shipping costs and estimated delivery times are calculated at checkout based on your location.
Yes. Once your order is dispatched you will receive an email with a tracking number and a link to follow your parcel's progress.
We accept Visa, Mastercard, American Express, Maestro, Diners Club, Discover, UnionPay, Apple Pay, Google Pay, and Shop Pay.
If you're not happy with your order, please contact us at info@nfsupplements.co.uk and we'll do our best to help. You can read our full refund policy at nfsupplements.co.uk/policies/refund-policy.
First, check the tracking link in your dispatch email. If the estimated delivery window has passed and your parcel still hasn't arrived, email us at info@nfsupplements.co.uk with your order number and we'll investigate immediately.
*These statements have not been evaluated by the Food and Drug Administration. Our products are not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare provider before starting any supplement programme.
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