Maximum Iron Absorption. Zero Gastric Distress.

Iron is notorious for poor bioavailability and causing severe gastrointestinal friction. Standard industry supplements rely on cheap iron salts—such as ferrous sulphate—that your body struggles to process, leading directly to constipation and nausea. We engineered this formulation to explicitly bypass those biological bottlenecks. By utilising 25 mg of premium Iron Bisglycinate Chelate, we deliver a highly stable molecule that survives stomach acid and absorbs seamlessly in the intestines.

The Vitamin C Catalyst

Iron absorption is highly volatile. To guarantee maximum cellular uptake, we paired our bisglycinate chelate with 200 mg of Vitamin C. Acting as a biological catalyst, Vitamin C actively maintains iron in its most absorbable state. This precise synergy ensures the iron is efficiently transported into your bloodstream to combat cellular fatigue, clear cognitive fog, and optimise systemic oxygen transport.

100% Active Ingredients

Inspect the label of a standard iron supplement and you will find a payload of non-active fillers, binders, and synthetic flow agents used simply to make manufacturing cheaper. We reject this industry normalcy. True to our Active-Only mandate, we utilise the 200 mg of Vitamin C not just for its biological synergy, but as a functional flow agent to fill the capsule. Every single milligram inside this capsule serves a physiological objective.

Third-Party Tested Purity

True to our Radical Product Integrity standard, every batch is independently tested to ensure maximum potency and safety, backed by our 700-day purity guarantee. Nothing added. Nothing hidden.

Ingredients

Active Ingredients:

Iron (as iron bisglycinate chelate) 25 mg
Vitamin C (as ascorbic acid) 200 mg

Other Ingredients:

Vegetarian capsule (hydroxypropylmethylcellulose)

All of our products are completely free from synthetic binders, fillers, preservatives, or hidden additives. Where other brands use cheap flow agents to speed up manufacturing, we use functional, complementary actives like Vitamin C. We invite you to inspect the ingredient labels of any other supplement brand and see if they maintain this same zero-tolerance policy across their entire range.

How to use and store

Allergy Advice:

Free from gluten, wheat, diary, eggs, soya and nuts.

Suggested dosage:

Take one (1) capsules daily with or without food, or as recommended by your healthcare practitioner. Store in a cool, dry air tight and dark place to avoid degredation.

Warning:

• Dietary supplements should not be a substitute for a balanced diet and healthy lifestyle
• This product should be stored out of the reach of children.
• Do not exceed the stated recommended daily dosage.

Purity tests

Ensuring maximum levels of safety, purity and quality is everything to us. We work with well established suppliers that have regular factory inspections and are certified with CGMP and ISO to ensure the highest standards are consistently met.

Delivery, Returns & Guarantee

60-Day Money Back Guarantee

Try it properly. Track how you feel. Keep what works.

Every Longevity Box product comes with a 60-day money back guarantee. If you don't notice a meaningful benefit within 60 days — or you simply change your mind — return it and we'll issue a full refund.

700-Day Purity Guarantee

Most brands promise purity at the point of manufacture. We guarantee it for the entire time you're using it.

Every Longevity Box product is covered by our 700-day purity guarantee — designed to ensure your supplements remain pure, reliable, and fit for purpose from the day they arrive to the day you finish them. That's the standard when you're playing the long game of healthspan.

Delivery

Fast fulfilment is part of product integrity. If you're building a protocol, supply gaps are friction.

We aim to ship the vast majority of orders the same day, using a 2–3 day service. UK orders over GBP 50 ship free. International shipping rates vary by destination. For added peace of mind, we offer a Royal Mail signed-for service.

FAQ

What are the main benefits of taking Iron with Vitamin C?

Iron is notoriously difficult for the human body to absorb. Vitamin C acts as a biological catalyst, actively converting iron into a state that your gut can easily absorb. This synergy ensures maximum cellular uptake, optimising red blood cell production and oxygen transport without the gastrointestinal friction caused by standard iron supplements.

Why did you add Vitamin C instead of standard flow agents?

Industry-standard supplements are packed with cheap, synthetic flow agents like magnesium stearate just to speed up the manufacturing process. We refuse to do this. Instead, we use 200 mg of Vitamin C. It serves the mechanical requirement of filling the capsule while delivering a functional, highly synergistic molecule directly to your cellular machinery.

Will this cause constipation or stomach upset?

No. Standard iron supplements use cheap iron salts (like iron sulphate) which are poorly absorbed and notoriously harsh on the gastric mucosa. We use Iron Bisglycinate Chelate, a premium structural form that survives stomach acid and is exceptionally gentle on the digestive tract.

Is it safe to take every day?

Yes, provided you have a verified iron requirement. This formula delivers a potent, clinical-grade dose designed to replenish depleted ferritin levels. However, if you are an adult male or a post-menopausal female, we strongly advise testing your ferritin blood markers before initiating daily iron supplementation to avoid iron overload.

When is the best time to take it?

For maximum bioavailability, take it on an empty stomach. Avoid taking it alongside calcium supplements, coffee, or tea, as calcium and tannins explicitly block iron absorption pathways.

Customer Reviews