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Double Magnesium

£19.99 £21.50 7% Off

Did You Know?
Magnesium is involved in over 300 essential reactions in the body, from energy production to nerve transmission. Many people may not get enough through diet alone, especially those under stress or with active lifestyles, making supplementation an effective support tool.

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Supports Mood & Well-Being

Promotes Calm & Restful Sleep

Vegan, Pure & Filler-Free

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  • Provides 376mg of magnesium per daily dose
  • Supports bones, muscle function, and energy metabolism
  • Aids in stress relief, mood balance, and relaxation
  • Helps prevent muscle cramps and tension
  • Contributes to digestive comfort and gut health
  • Vegan, gluten-free, and GMO-free

Did You Know?
Magnesium is involved in over 300 essential reactions in the body, from energy production to nerve transmission. Many people may not get enough through diet alone, especially those under stress or with active lifestyles, making supplementation an effective support tool.

How will Double Magnesium benefit me?
Combining two bioavailable sources—Magnesium Bisglycinate and Magnesium Oxide—this supplement helps maintain strong bones and muscles, supports nervous system balance, and assists with energy and digestion. It’s a great choice for everyday wellbeing and active recovery.

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Supplement bottle labeled 'Black Walnut & Pumpkin Seed' by OCTI Nutrition on a white background

Build strength, recovery, and calm in one stack.

Safe. Simple. Seriously Clean.

Vegan

Sugar Free

Soy Free

Non GMO

Gluten Free

Dairy Free

Why Our Nutrition Works

Octi Runners
01

Clean, Filler-Free Formulas That Actually Work

Premium ingredients, no bulking agents, no and science-backed dosages designed for real, noticeable results.

02

Built for Everyday Performance: Work, Gym, Life

Energy, focus, recovery, and gut support formulated for busy people who need to perform at their best all day.

03

Trusted UK Quality With Fast, Reliable Delivery

Made in the UK for maximum safety and consistency, delivered fast, so you feel the benefits sooner.

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Frequently Asked Questions

Yes, our products are manufactured in the UK under GMP quality protocols for safety and consistency.

Many are. Each product page lists dietary suitability and a full ingredient list so you can choose confidently.

Follow the label instructions on each product page. For best results, take consistently (often with food and water unless stated).

Generally yes, our formulas are designed to be complementary. If you take medication or have a condition, consult your GP first.

Yes, try our Vitamin D Test Kit to check your levels at home and tailor your routine.

UK orders dispatch in 1–2 business days and typically arrive within 3–5 working days. You’ll receive tracking by email.

We currently focus on the UK. European shipping is planned, watch this space.

We offer a 30-day satisfaction guarantee. If your order is damaged or you’re not satisfied, email support@octinutrition.co.uk.

Email support@octinutrition.co.uk or use the contact form. We reply within 24 hours (Mon–Fri).