🧲 Magnesium Glycinate — The Mineral Foundation

Magnesium is an essential mineral involved in over 300 enzymatic processes — including regulation of the HPA axis (the body's central stress response system), NMDA receptor activity, GABA receptor function, and ATP production. Low magnesium amplifies cortisol output and disrupts GABA — the primary inhibitory neurotransmitter. Magnesium Glycinate (Bisglycinate) is chelated — bound to glycine — significantly improving absorption over inorganic forms like magnesium oxide (~4% bioavailability). Glycine itself has inhibitory neurotransmitter activity at glycine receptors in the spinal cord. Magnesium has 10 authorised EU/UK health claims including normal nervous system function, normal psychological function and reduction of tiredness and fatigue. Around 60% of UK adults fail to meet the RNI from diet alone (NDNS). Educational background only — food supplement, not a medicine.

🍵 L-Theanine — The Green Tea Amino Acid

L-Theanine (5-N-ethylglutamine, CAS 3081-61-6) is a non-protein amino acid found almost exclusively in green tea (Camellia sinensis) and certain mushrooms. It has been consumed by humans through green tea for thousands of years. Structurally similar to glutamate — an excitatory neurotransmitter — L-Theanine binds to glutamate receptors without activating them, effectively modulating glutamatergic activity. It also promotes the synthesis of GABA and increases alpha brain wave activity (8–12 Hz) in the brain — a pattern associated with calm alertness without sedation. This is why L-Theanine is described as producing "relaxed focus" rather than drowsiness. Multiple human studies have confirmed alpha wave promotion at doses of 50–200mg. No authorised EU/UK health claims exist for L-Theanine on the GB NHC Register. Educational background only — food supplement, not a medicine.

⚡ Why They Are Combined — Complementary Mechanisms

Magnesium and L-Theanine target the nervous system through different but complementary pathways. Magnesium works primarily through mineral balance — correcting deficiency, regulating NMDA receptors and supporting ATP-powered cellular processes. L-Theanine works primarily through neurotransmitter modulation — promoting alpha waves and modulating glutamate activity at the receptor level. Together they represent a mineral-plus-amino acid approach to nervous system support. A review published in Bolt Pharmacy (2025) noted that while each has been studied individually, no clinical trial evidence currently exists specifically evaluating their combined use. Most available data are from studies examining each supplement independently. The combination is based on complementary mechanisms, not direct combined RCT evidence. Educational background only — food supplement, not a medicine.

🏭 Why No Fillers Matters

Contract encapsulation facilities routinely add rice flour, bamboo silica and microcrystalline cellulose to supplement powders to aid powder flow through industrial machines. These are not active ingredients — they serve the machine, not the consumer. Because Charge Products encapsulates in-house at our own 5 Star FSA rated facility, we do not need these flow agents. Our Magnesium L-Theanine capsules contain exactly three ingredients: Magnesium Glycinate, L-Theanine and HPMC capsule shell. Nothing else.

✅ Magnesium contributes to normal functioning of the nervous system

What is in the capsule?

325mg Magnesium Glycinate (CAS 14783-68-7) + 325mg L-Theanine (CAS 3081-61-6) + HPMC vegan capsule shell. No fillers, no binders, no flow agents. In-house encapsulated by Charge Products (Big Idea Services Ltd, Co. No. 11645389). Food supplement — not a medicine.

What does Magnesium L-Theanine do?

Magnesium regulates NMDA receptors, GABA activity and the HPA stress axis — contributing to normal nervous system function and normal psychological function (authorised EU/UK claims). L-Theanine promotes alpha brain wave activity — the brain wave pattern associated with calm alertness without drowsiness — and modulates glutamate activity. They work through complementary mechanisms. No combined RCT evidence exists. No authorised EU/UK health claims for L-Theanine. Educational background only — food supplement, not a medicine.

Are there any fillers in these capsules?

None — no rice flour, no bamboo silica, no microcrystalline cellulose, no magnesium stearate. In-house encapsulated at our own 5 Star FSA Food Hygiene rated facility in Southend-on-Sea, Essex. We do not need the flow agents that contract encapsulation facilities add to their machines. Three ingredients only: Magnesium Glycinate, L-Theanine, HPMC capsule shell.

When is the best time to take these capsules?

Many people take Magnesium L-Theanine capsules in the afternoon or evening — as part of a wind-down routine. L-Theanine is typically studied in the afternoon or 30–60 minutes before bed. Magnesium can be taken at any time with food. Follow label directions. Do not exceed 400mg supplemental magnesium per day (UK FSA guidance). Food supplement — not a medicine.

Does L-Theanine cause drowsiness?

L-Theanine is studied for its ability to promote alpha brain wave activity — the brain wave pattern associated with calm alertness without drowsiness. Unlike sedatives, L-Theanine does not impair cognitive function or induce sleep directly. This is why the combination with magnesium is described as supporting "calm focus" rather than sedation. No authorised EU/UK health claims for L-Theanine. Educational background only — food supplement, not a medicine.

What are the authorised health claims for this product?

Magnesium has 10 authorised EU/UK health claims under Regulation 1924/2006 retained in UK law — including normal nervous system function, normal psychological function, reduction of tiredness and fatigue, normal muscle function, electrolyte balance, energy-yielding metabolism, normal bones, normal teeth, normal cell division and neurotransmission including heart muscle. L-Theanine has no authorised EU/UK health claims on the GB NHC Register. Food supplement — not a medicine.

Is there combined RCT evidence for Magnesium and L-Theanine together?

No — as of current published literature there is no RCT specifically evaluating the combination of Magnesium and L-Theanine in a clinical trial. Evidence is available for each ingredient independently. Animal research suggests synergy between the two; human combined trial data is not yet available. The combination is based on complementary mechanisms. Educational background only — food supplement, not a medicine.

Can I take this alongside other magnesium supplements?

The UK FSA recommends not exceeding 400mg magnesium per day from supplements. Account for total supplemental magnesium across all products. Consult your GP before use if taking prescription medication, particularly blood pressure medication or sedatives. Food supplement — not a medicine.

Is this product vegan?

Yes — Magnesium Glycinate and L-Theanine are both non-animal derived. The capsule shell is HPMC (hydroxypropyl methylcellulose) — a plant-derived vegan alternative to gelatin. No animal ingredients at any stage. Suitable for vegans and vegetarians.

Is this product a medicine?

No — Magnesium L-Theanine 650mg Capsules are food supplements, not licensed medicines. Not intended to diagnose, treat, cure or prevent any disease or medical condition. Food supplement — not a medicine.

Can I buy Magnesium L-Theanine wholesale UK?

Yes — wholesale magnesium L-theanine capsules UK and bulk supply available from Charge Products (Big Idea Services Ltd, Co. No. 11645389), supplying health retailers, resellers and trade buyers from UK-held stock since 2016. 158,000+ verified marketplace sales. Contact via trade enquiry page.

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