Magnesium XR Tri-Source Complex with L-Theanine, Taurine & Vitamin B6 | 90 Vegan Tablets

Most magnesium supplements use a single form of magnesium, typically oxide, which is cheap to produce but poorly absorbed by the body. This product uses three forms simultaneously: magnesium bisglycinate, magnesium citrate, and magnesium oxide. Each form is absorbed through a different mechanism and supports slightly different functions, so the combined effect is broader and more complete than any single-source product. It also includes L-Theanine, Taurine, and P-5-P Vitamin B6, ingredients that each add a distinct layer of support rather than simply padding out the formula, meaning you are getting five targeted compounds in one daily serving rather than five separate supplements.

It is particularly relevant for people who feel the physical and mental signs of low magnesium: muscle cramps or tension that will not shift, poor sleep despite being tired, persistent low energy, difficulty managing stress, or a general sense of being wired but exhausted. It also suits people who train regularly and want to support muscle recovery and electrolyte balance, and anyone eating a diet low in magnesium-rich foods such as leafy greens, nuts, and seeds. Being vegan and free from dairy, soya, sugar, and gluten, it is accessible to a wide range of people without needing a separate allergen-free alternative.

A tri-source blend means this product uses three different chemical forms of magnesium together: bisglycinate, citrate, and oxide. Magnesium bisglycinate is bound to the amino acid glycine, making it one of the most bioavailable and gentlest forms available, particularly suited to sleep, relaxation, and nervous system support. Magnesium citrate absorbs well and is commonly associated with energy metabolism and muscle function. Magnesium oxide has a lower absorption rate individually but contributes a high concentration of elemental magnesium per milligram. Using all three together delivers 294mg of elemental magnesium per 2-tablet serving while covering a broader range of absorption pathways than any single-source formula can achieve.

The serving size is 2 tablets per day. Evening is the most popular time to take it because magnesium supports muscle relaxation and sleep quality, and the L-Theanine in this formula reinforces that calming effect when winding down. Most people start noticing improvements in sleep quality and muscle tension within one to two weeks, and broader benefits such as reduced fatigue and better mood typically follow over two to four weeks of consistent daily use. If you are using it primarily for daytime energy and muscle support, splitting the dose between morning and evening also works well. Either way, taking the tablets with food reduces any chance of digestive sensitivity.

Yes, and it is one of the most well-supported reasons people take magnesium supplements. Magnesium plays a direct role in regulating the nervous system and activating GABA receptors, which helps the brain and body shift into a calmer state before sleep. Low magnesium levels are associated with restless sleep, difficulty staying asleep, and waking feeling unrefreshed. This product uses magnesium bisglycinate as one of its three magnesium sources, which is the form most commonly associated with sleep support because it is gentle on the digestive system and crosses into the nervous system efficiently. The addition of L-Theanine further supports relaxation without causing drowsiness, making this formula particularly well suited to taking in the hour before bed.

Each additional ingredient has a specific role that complements the magnesium rather than duplicating it. L-Theanine is an amino acid that promotes calm alertness and supports relaxation without causing drowsiness, reinforcing the nervous system support provided by the magnesium. Taurine is an amino acid involved in electrolyte balance, muscle function, and cardiovascular health, working alongside magnesium’s own role in electrolyte regulation. Vitamin B6 is included in its active P-5-P form, which is the bioavailable version the body can use directly without needing to convert it, contributing to normal psychological function and the reduction of tiredness and fatigue. Including P-5-P rather than standard B6 is a meaningful formulation choice that better supports absorption, particularly in people whose conversion ability is reduced.

Elemental magnesium refers to the actual amount of pure magnesium in a serving, not the total weight of the magnesium compound including whatever molecule it is bound to. This distinction matters because many products advertise a high milligram figure on the label that includes the binding compound, making the dose look larger than the actual magnesium content. 294mg of elemental magnesium per 2-tablet serving is a substantial, practical dose. The EU recommended daily intake for magnesium in adults is 375mg, so this product provides approximately 78 percent of that target from supplementation alone, with the remainder coming from food.

This formula is generally well tolerated. The most common side effect associated with magnesium supplements is loose stools or digestive discomfort, which is more likely with oxide-only products taken on an empty stomach. The inclusion of magnesium bisglycinate in this formula significantly reduces that risk because bisglycinate is one of the gentlest forms on the digestive system. Taking the tablets with food further reduces any chance of discomfort. People with kidney disease should not supplement with magnesium without first consulting their GP, as impaired kidneys cannot regulate magnesium excretion effectively.

This complex is generally compatible with most common supplements and pairs well with Vitamin D3, zinc, and ashwagandha. It is commonly used as part of an evening sleep and recovery stack. The main consideration with medications is that magnesium can reduce the absorption of certain antibiotics, including tetracyclines and quinolones, and some osteoporosis medications if taken at the same time. Spacing magnesium supplementation at least two hours away from these medications resolves the issue in most cases. If you are on diuretics or medication for heart conditions, check with your GP before use as these can affect magnesium levels in the body.

Each pack contains 90 vegan tablets. At the recommended serving of 2 tablets per day, this provides a 45-day supply priced at £8.99, which works out at approximately 20p per day. The honest way to assess that price is to consider what it would cost to buy these ingredients separately. Magnesium bisglycinate alone typically costs £8 to £15 for a similar tablet count. A standalone L-Theanine supplement runs another £8 to £12. Taurine and P-5-P B6 add further cost on top of that. Buying all five ingredients individually would likely cost between £35 and £60 for the same supply duration. Getting them in one formula at 20p per day, in a vegan and allergen-free tablet, represents considerably better value than building the same stack yourself.