Magnesium

By Tom Francis·Updated 2026-09-03·Editorial policy

All pages

• Futuro Labs Magnesium Glycinate: label, dose and cost per dayFull label breakdown of Futuro Labs Magnesium Glycinate: 300mg elemental magnesium per two capsule serving, 80 percent N
• Magnesium for rugby playersWhat magnesium does and does not do for UK club rugby players: how much you need, the honest position on cramp, timing a
• Best protein powder for rugby playersWhat a rugby player should look for in a protein powder, how much protein is actually needed, and why food usually gets
• Does magnesium stop cramp in rugby?Whether magnesium prevents cramp in rugby, what the authorised claims actually say, and what the evidence points to for
• What is the best supplement for rugby players?Which supplement is genuinely worth taking for a UK club rugby player, ranked on authorised claims, label quality and co
• Best magnesium for rugby playersHow to pick a magnesium supplement as a rugby player, ranked on elemental content, form, testing and cost per day rather
• Is magnesium glycinate the right form for rugby players?Why magnesium glycinate suits a rugby player taking a daily serving through a full season, how it compares to citrate an
• Magnesium spray or capsules for rugby players?Whether a magnesium spray does anything a capsule does not for rugby players, what the evidence says about skin absorpti
• Can rugby players take magnesium with protein powder?Whether magnesium and protein powder interact, how to sequence them around training, and what magnesium actually contrib
• Electrolytes or magnesium for rugby cramp?Whether an electrolyte drink or a magnesium supplement is the better answer to rugby cramp, what each actually does, and
• Taking magnesium on a rugby tour: what it costs and what travelsWhat a magnesium supplement costs for a rugby tour, why capsules travel better than powders and sprays, and what a tour
• Best magnesium for prop forwardsHow a prop should choose a magnesium supplement, why body mass does not change the target, and the label criteria that s
• Best magnesium for the front rowChoosing a magnesium supplement as a front row forward, what the scrum actually loads, and the label criteria that separ
• Best magnesium for the back rowChoosing a magnesium supplement as a back row forward, why total workload is the defining feature of the position, and t
• Best magnesium for scrum halvesChoosing a magnesium supplement as a scrum half, what the position's workload actually looks like, and the criteria that
• Best magnesium for fly halvesChoosing a magnesium supplement as a fly half, what kicking volume and decision load actually demand, and the criteria t
• Best magnesium for wingersChoosing a magnesium supplement as a winger, what high speed running exposure actually demands, and the criteria that se
• Best magnesium for rugby pre seasonChoosing a magnesium supplement for rugby pre season, why sweat losses and training volume peak there, and the criteria
• Best magnesium for the rugby seasonChoosing a magnesium supplement to take through a full rugby season, why adherence beats optimisation, and the criteria
• Best magnesium for match dayWhether there is a match day magnesium worth taking, why nothing in this category acts acutely, and what actually affect
• Best magnesium for club rugby playersChoosing a magnesium supplement as a club rugby player, judged on cost per day, adherence and label honesty rather than
• Best magnesium for university rugby playersChoosing a magnesium supplement as a university rugby player, on a student budget with midweek fixtures, halls cooking a
• Best magnesium for veterans rugbyChoosing a magnesium supplement as a veterans rugby player, what changes with age, and what honestly does not.
• Best magnesium for rugby league playersChoosing a magnesium supplement as a rugby league player, what the thirteen a side game demands, and the criteria that s
• Best magnesium for winter rugby trainingChoosing a magnesium supplement for winter rugby training, what actually changes when sessions move into the dark and th
• How much magnesium does a rugby player need?The actual magnesium figures for a rugby player: the labelling NRV, the UK dietary reference values, what food provides
• Does a bigger rugby player need more magnesium?Whether body mass changes magnesium requirements for a rugby player, what the reference values actually say, and why the
• Is magnesium banned in rugby?Whether magnesium is a banned substance in rugby, what actually creates risk in a supplement, and what a tested player s
• What to look for in a magnesium supplementA step by step method for checking a magnesium label, with the actual arithmetic worked through on real figures.
• Magnesium for rugby crampWhether magnesium helps rugby cramp, what the authorised claims allow, and what actually explains cramp late in a match.
• Magnesium and two sessions a day in rugbyWhether double session training days change magnesium needs for a rugby player, what sweat losses actually look like, an
• Magnesium for rugby recoveryWhether magnesium aids recovery after rugby, what the authorised claims actually cover, and what genuinely shortens the
• Magnesium after a rugby matchWhether taking magnesium after a rugby match does anything, what the post match window actually is for, and where a dail
• Magnesium before a rugby matchWhether taking magnesium before a rugby match does anything and what actually affects how a player feels late on.
• Magnesium and sleep after evening rugby trainingWhether magnesium helps a rugby player sleep after a late training session, what is actually authorised, and what genuin
• Magnesium dose for a rugby playerThe actual magnesium dose figures for a rugby player: the labelling reference value, the UK dietary reference values and
• ZMA in rugby: is it worth taking?What ZMA actually contains, why it became a changing room staple, what the claims allow, and whether a rugby player need
• Magnesium and creatine for rugby playersWhether magnesium and creatine interact, how they fit together in a rugby player's routine, and what each can actually c
• Magnesium and sweat loss in rugbyHow much magnesium a rugby player actually loses in sweat, how it compares with sodium losses, and what that means for d
• Best time to take magnesium around rugby trainingWhether magnesium timing matters around rugby training, what the evidence supports, and the one timing decision that gen
• Magnesium side effects for rugby playersThe realistic side effects of a magnesium supplement, which form causes them most, and the supplemental ceiling to stay
• Magnesium for a club rugby playerWhat a club rugby player actually needs to know about magnesium: the target, the cost and what it can honestly claim.
• Magnesium for university rugbyWhat a university rugby player needs to know about magnesium on a student budget with midweek and Saturday fixtures.
• Magnesium for rugby leagueWhat a rugby league player needs to know about magnesium, and why the summer calendar is the only thing that genuinely d
• Magnesium in seasonWhat matters for a magnesium supplement taken through a full rugby season, and where most players stop.
• Magnesium in the off seasonWhether a rugby player should keep taking magnesium through the off season, what changes and what does not.
• What magnesium costs per day for a rugby playerHow to work out what a magnesium supplement actually costs per day, why per capsule pricing misleads, and what a season
• Magnesium and dehydration in rugbyWhether magnesium has anything to do with dehydration in rugby, which electrolytes actually matter, and how a player sho
• Magnesium and tiredness in rugbyThe authorised tiredness claim for magnesium, what it does and does not cover, and what actually explains feeling flat t
• Magnesium and match day nutritionWhere magnesium sits in match day nutrition for a rugby player, and what actually belongs in the plan for the day.
• Taking magnesium on a rugby tourWhat to pack and what to leave for a rugby tour, and why capsules are the format that survives the week.
• How to work out the elemental magnesium in any supplementA worked method for converting any magnesium compound weight into elemental magnesium, including blends, buffered produc
• How to check a magnesium label before you buyThe whole magnesium label, front to back: panel, ingredients, allergens, warnings, batch number and what each part tells
• How to compare magnesium forms without the marketingComparing magnesium forms on absorption, tolerability and cost per 100mg of elemental magnesium rather than on what the
• How to calculate what a magnesium supplement costs per dayThe three numbers needed to work out what any magnesium supplement costs per day, and why the shelf price misleads.
• Second-half cramp: does magnesium help?Why cramp arrives in the second half of a rugby match specifically, what that timing tells you about the cause, and whet
• Calf cramp: does magnesium help?Why the calf cramps more than any other muscle in rugby, what to do when it happens, and whether magnesium has anything
• Hamstring cramp: does magnesium help?Why hamstring cramp hits outside backs late in matches, how to tell it from a strain, and whether magnesium has anything
• Two sessions a day: does magnesium help?Whether a double session day changes what a rugby player should take, and what actually limits the second session.
• Sleep after evening training: does magnesium help?Whether magnesium helps a player sleep after late training, and what actually keeps club players awake on a training nig
• Heavy sweat loss: does magnesium help?What a heavy sweating rugby player actually loses, which nutrients matter, and where a daily magnesium intake fits.
• Rugby tour and travel: does magnesium help?Whether magnesium is worth taking on a rugby tour, what a tour week does to a routine, and what actually matters.
• Coming back into pre season: does magnesium help?What the first weeks back actually do to a player, why cramp and soreness peak there, and where a magnesium intake fits.
• Magnesium deficiency symptoms in rugby playersWhether a rugby player can self diagnose low magnesium from symptoms, what the picture actually looks like, and what to
• Does magnesium glycinate make you sweat at night?Whether magnesium causes night sweats, what the recognised side effects actually are, and when night sweats need a docto
• Is magnesium citrate good for muscle recovery?Whether magnesium citrate does anything for recovery, and how it compares with other forms.
• Magnesium glycinate or citrate for cramp?Whether either magnesium form helps cramp, and what actually separates the two.
• Is magnesium glycinate good for sport?What magnesium can claim for someone training, and why the form does not change it.
• What type of magnesium is best for sport?Which magnesium form suits an athlete, why the claims do not vary by form, and what actually decides the choice.
• Does magnesium help with leg cramp?Whether magnesium relieves leg cramp, what the claim position is, and when cramp needs a doctor.
• Can magnesium improve exercise performance?Whether magnesium improves performance, what the authorised claims actually permit, and the difference between adequacy
• Is magnesium lost in sweat?How much magnesium is actually lost in sweat, and how it compares with sodium.
• Does magnesium glycinate help with muscle recovery?What magnesium can claim in relation to muscle, and why recovery is not one of them.
• Does magnesium help with muscle soreness?Whether magnesium reduces soreness after training, and what soreness actually is.
• Is it worth taking magnesium after a session?Whether post session timing matters for magnesium, and what the post session hour is actually for.
• How much magnesium after a session?Whether the magnesium serving should change after training, and what the daily figure is.
• Do you sweat out magnesium?Whether sweating depletes magnesium, how much is actually lost, and what that means for intake.
• Should an athlete take magnesium?Whether someone training seriously should take magnesium, what the claims permit, and how to decide without a blood test
• Does magnesium help with sports recovery?What magnesium can claim in relation to recovery, and what actually shortens the week.
• Magnesium before or after playing?Whether magnesium timing around a match or session matters, and what the daily figure is for.
• Does magnesium reduce how much you sweat?Whether magnesium affects sweat rate, and what actually determines it.
• Can too much magnesium cause cramp?Whether excess magnesium causes cramp, what the recognised effects of high intakes are, and when cramp needs a doctor.
• Is it worth taking magnesium before training?Whether a pre training magnesium serving does anything, and where the daily serving belongs.
• What magnesium actually does for someone playing sportThe specific roles magnesium plays that matter to a player, what each authorised claim covers, and where the marketing g
• Which magnesium should someone training regularly take?How to choose a magnesium form when training regularly, why tolerability matters more than absorption, and what to check
• Should heavy sweaters take magnesium?Whether sweating heavily changes the magnesium case, and what a heavy sweater should prioritise.
• How much magnesium do you lose in sweat?The scale of magnesium losses in sweat, how it compares with sodium, and whether it can be measured.
• Is magnesium worth taking if you train in the gym?Whether gym training changes the magnesium case, and what the honest reason to take it is.
• Magnesium oxide or glycinate?The real difference between the cheapest magnesium form and the best tolerated one.
• Is there a vitamin or mineral that stops leg cramp?Whether any vitamin or mineral has an authorised claim for cramp, what the evidence actually supports, and when cramp ne
• Is elemental magnesium the same as magnesium glycinate?The difference between a compound weight and an elemental figure, and why it decides purchases.
• Glycinate or bisglycinate: is there a difference?Whether the two names describe different things, and what to check instead.
• Is protein powder something to avoid?Why protein powder attracts caution, what the actual concerns are, and where they apply.
• Is an electrolyte drink the answer to leg cramp?Whether an electrolyte drink prevents leg cramp, what those products actually do, and how to read one.
• Severe leg cramp: is a supplement the answer?What severe or frequent leg cramp actually warrants, and why it is not a supplement question.
• Magnesium spray or capsules for sleep?Whether a magnesium spray does anything a capsule does not, and what the sleep claim position is.
• What is the downside of magnesium oxide?Why magnesium oxide is cheap and common, and what the trade off actually is.
• Glycinate or citrate for muscle spasms?Whether either form helps muscle spasm, and what separates them in practice.
• Which magnesium should you take if you get leg cramps?Whether any magnesium form helps leg cramp, and what to judge a product on instead.
• Which magnesium form is best for muscle?What magnesium can claim in relation to muscle, and why the form does not change it.
• Is there any benefit to magnesium oxide?What magnesium oxide is genuinely good at, where it fails, and when it makes sense.
• Is 500mg of magnesium too much?What the UK supplemental ceiling for magnesium is, where 500mg sits against it, and whether the figure on your label is
• What are the signs of too much magnesium?What excess supplemental magnesium actually does, at what intakes, and when it needs a doctor.
• Is there a magnesium timing for weight loss?Whether magnesium affects weight, what the authorised claims cover, and what actually determines it.
• Should magnesium and vitamin D be taken together?Whether the two interact, when each is worth taking, and what timing changes.
• How long does magnesium take to work?What timescale magnesium actually operates on, why nothing happens in the first fortnight, and what that means for judgi
• Can too much magnesium cause dizziness?What excess supplemental magnesium actually produces, and when dizziness needs a doctor.
• What is magnesium oxide 400mg used for?What magnesium oxide is actually used for, including its medical uses, and why that matters for anyone taking it daily.
• What if you accidentally take too much magnesium?What a double dose of a magnesium supplement actually does, and when it needs medical attention.
• Is magnesium better absorbed through the skin?What the evidence for transdermal magnesium actually looks like, and why an oral dose can be verified when a topical one
• What is a ZMA dose, and does it stack up?What a standard ZMA serving contains, how it compares to the UK supplemental guidance levels, and what the claims actual
• How to get enough magnesium from foodWhich foods carry magnesium, what a day reaching the reference value actually looks like, and how far a normal diet gets
• Which magnesium has the highest elemental content?Which form carries the most magnesium by weight, and why that is not the same as the best choice.
• Is there a magnesium dose for stress?Whether magnesium has a stress claim, what the nearest authorised wording is, and what it means.
• What does magnesium actually do for muscle?The role magnesium plays in muscle contraction and relaxation, what the authorised claim permits, and why that is narrow