We Tested 19 Magnesium in the UK — Scores, Reviews & Prices
Magnesium supplements in highly bioavailable forms (glycinate, malate, L-threonate) for sleep, muscle function, and stress.
We analysed 19 magnesium using currently available review and product data from public sources. We evaluate each product across six categories — effectiveness, ingredient quality, value for money, side effects, certifications, and overall score — so you can make an informed decision without spending hours reading individual reviews.
🏆 View Best Magnesium 2026 Rankings →What are the best magnesium in 2026?
According to the AIScored 0–100 scoring system, the highest-rated magnesium in the UK are: Doctor's Best High Absorption Magnesium 100mg (82.0/100), Magnesium Glycinate 400mg (80.0/100), Magnesium Citrate 60 Tablets (77.0/100). Rankings are based on 19 products scored across effectiveness, ingredient quality, value for money, side effects, and certifications.
| Rank | Product | Brand | Score | Price |
|---|---|---|---|---|
| #1 | Doctor's Best High Absorption Magnesium 100mg | Doctor's Best | 82.0/100 | £26.40 |
| #2 | Magnesium Glycinate 400mg | Solgar | 80.0/100 | £12.25 |
| #3 | Magnesium Citrate 60 Tablets | Solgar | 77.0/100 | £12.00 |
| #4 | Calcium Magnesium plus Zinc 250 Tablets | Solgar | 74.0/100 | £9.22 |
| #5 | Magnesium Bisglycinate 200mg | Thorne | 74.0/100 | — |
| #6 | Life Extension Neuro-Mag Magnesium L-Threonate | Life Extension | 73.0/100 | £37.90 |
| #7 | BetterYou Magnesium Body Spray | BetterYou | 73.0/100 | £8.33 |
| #8 | Nutravita Magnesium Supplements 5-in-1 Complex 1146m... | Nutravita | 73.0/100 | £15.99 |
| #9 | Magnesium Citrate 120 Tablets | Solgar | 72.0/100 | £17.94 |
| #10 | WILD NUTRITION Food-Grown Magnesium Supplements | Wild Nutrition | 72.0/100 | £19.50 |
19 products
Which magnesium rank highest in 2026?
View full rankings →
Doctor's Best High Absorption Magnesium 100mg
Doctor's Best
Doctor's Best High Absorption Magnesium uses Albion TRAACS magnesium bisglycinate chelate, a premium chelated form widel...
Magnesium Glycinate 400mg
Solgar
Solgar Magnesium Glycinate 400mg is a premium chelated magnesium supplement widely praised by reviewers for improving sl...
Magnesium Citrate 60 Tablets
Solgar
Solgar Magnesium Citrate delivers 400mg elemental magnesium per two-tablet serving in the bioavailable citrate form, bac...
Calcium Magnesium plus Zinc 250 Tablets
Solgar
Solgar's Calcium Magnesium plus Zinc is a well-regarded combination mineral supplement delivering 1000mg calcium, 400mg ...
Magnesium Bisglycinate 200mg
Thorne
Thorne Magnesium Bisglycinate delivers 200mg of elemental magnesium in chelated bisglycinate form, one of the most bioav...
Life Extension Neuro-Mag Magnesium L-Threonate
Life Extension
Life Extension Neuro-Mag Magnesium L-Threonate uses Magtein, the patented and clinically studied form of magnesium L-thr...
BetterYou Magnesium Body Spray
BetterYou
BetterYou Magnesium Body Spray delivers magnesium chloride sourced from the Zechstein seabed transdermally, bypassing th...
Nutravita Magnesium Supplements 5-in-1 Complex 1146mg - Which? Best Buy 2025-240 High Strength Capsules - 400mg Elemental Magnesium: Bisglycinate, Citrate, Malate, Oxide, Ascorbate - Muscles & Sleep
Nutravita
Four hundred milligrams of elemental magnesium per two-capsule serving sounds generous, but the blend quality is uneven:...
Magnesium Citrate 120 Tablets
Solgar
Solgar's Magnesium Citrate 120 Tablets delivers 400mg of elemental magnesium in the highly bioavailable citrate form per...
WILD NUTRITION Food-Grown Magnesium Supplements
Wild Nutrition
Wild Nutrition's Food-Grown Magnesium is a premium UK supplement using a proprietary 'food matrix' process that binds ma...
Calcium Magnesium plus Zinc 100 Tablets
Solgar
Solgar's Calcium Magnesium Plus Zinc is a well-established mineral combination supplement from a trusted premium brand, ...
High Potency Magnesium 300mg 120 Capsules
Viridian
Viridian High Potency Magnesium 300mg combines three magnesium forms — citrate, oxide, and bisglycinate — in a clean-lab...
Magnesium Glycinate 3-in-1 Complex - 1800mg Supplements as Bisglycinate, Citrate & Malate 90 Vegan Capsules, Triple High Absorption 384mg Elemental, UK Made
Nutrition Geeks
Nutrition Geeks' Magnesium Glycinate 3-in-1 Complex combines three bioavailable magnesium forms — bisglycinate (1000mg),...
Chelated Magnesium 100 Tablets
Solgar
Solgar Chelated Magnesium delivers 100 mg of elemental magnesium per tablet (400 mg daily at the recommended 4-tablet do...
True Magnesium+ 60 Capsules
Ancient+Brave
True Magnesium+ by Ancient+Brave is a premium UK supplement combining three complementary bioavailable magnesium forms —...
Magnesium With Vitamin B6 100 Tablets
Solgar
Solgar Magnesium with Vitamin B6 is a well-established supplement from a brand founded in 1947, combining magnesium oxid...
Atlantic Marine Magnesium 300mg - Natural Source - True Food® Formula - High Strength Magnesium Supplements - Enhance Natural Calm, Supports Bone, Muscle, Sleep & Energy - 90 Capsules
HIGHER NATURE
Higher Nature Atlantic Marine Magnesium 300mg sources its magnesium from filtered Atlantic seawater as part of the brand...
Nutravita Calcium Magnesium & Zinc with Vitamin D D3 Copper Selenium Boron and Manganese - 365 Tablets
Nutravita
Magnesium form is the biggest unknown here — at 360mg per serving, it could be genuinely useful or largely wasted depend...
Nature Made Magnesium Oxide 400mg
Nature Made
Nature Made Magnesium Oxide 400mg is a budget-friendly, USP-verified magnesium supplement marketed for muscle relaxation...
What are the most popular uses for magnesium?
Filter products by common goals and user profiles in this category.
How do the top magnesium compare head-to-head?
See all side-by-side comparisons between magnesium products.
How does AIScored compare magnesium?
We collect currently available review and product data from public sources to build a complete comparison baseline.
We read every review, check ingredient labels, fillers, and certifications, then generate an unbiased summary.
Products are scored 0-100 across evidence-based categories, making it easy to compare at a glance.
Which magnesium buying guides are available?
Long-tail guides for specific goals in magnesium.
What should you look for when buying magnesium?
Choosing the right magnesium can be overwhelming with hundreds of options on the UK market. Here are the key factors we analyse when scoring each product:
Bioavailability & Forms
Not all ingredient forms are equally effective. We check which forms are used and whether they're backed by research for optimal absorption and bioavailability.
Clean Label & Fillers
Many products contain unnecessary fillers, artificial colours, added sugars, and bulking agents. We flag products with excessive additives and reward clean formulations.
Third-Party Testing
Independent lab testing verifies that what's on the label is actually in the product. Products with third-party certifications (NSF, USP, Informed Sport) score higher in our rankings.
Value per Serving
The cheapest option isn't always the best value. We calculate the cost per serving and weigh it against ingredient quality, dosage, and overall effectiveness reported by users.
How Our Scoring Works
Each product is scored 0-100 across evidence-based categories. An overall score of 80+ indicates a product we'd recommend to most people. Scores of 60-79 are solid choices with some trade-offs, while anything below 60 has significant drawbacks reported by users. Our scores are recalculated regularly as new reviews and ingredient data come in.
Frequently Asked Questions
Where do you get your reviews?
We aggregate publicly available review and product data from retailer pages, communities, and specialist sources. We do not use manufacturer-provided testimonials as evidence.
How often are scores updated?
We re-analyse reviews and update scores regularly. Product pages show the date of the latest analysis.
Do you receive products for free?
No. AIScored does not accept free products or sponsored placements. Our revenue comes from affiliate links, which do not influence our scores.
What is the best magnesium in 2026?
Based on our analysis of 19 products, the top rated magnesium is Doctor's Best High Absorption Magnesium 100mg with a score of 82.0/100.
How many magnesium products have you reviewed?
We have analysed 19 magnesium products, scoring each on effectiveness, ingredient quality, value for money, side effects, and certifications.
What other categories are related to magnesium?
Disclaimer: AIScored provides research-backed summaries based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Prices are updated regularly but may differ at the time of purchase. Affiliate links may earn us a commission at no extra cost to you.