Is magnesium citrate good for athletes?

The claims are the mineral's, the absorption is fine, and the laxative effect is the thing that decides

Is magnesium citrate good for athletes, and the variant asking about glycinate and citrate benefits together, are answered by separating three things the salt marketing mixes: the claims, the absorption and the gut. The claims are the mineral's and identical in any salt, the register granting its sentences to magnesium and not to citrate or glycinate, so magnesium citrate for sport carries exactly what bisglycinate carries, a contribution to normal muscle function, normal energy-yielding metabolism, electrolyte balance, normal protein synthesis, normal nervous system and psychological function and the reduction of tiredness and fatigue, the athletes flagship's training-relevant set, and the benefits of glycinate and citrate are one list, not two, the deficiency pattern applying to both, repletion helping the athlete who ran short and nothing helping the replete. The absorption is fine: magnesium citrate is well absorbed in the comparative bioavailability trials, roughly level with bisglycinate and clearly better than oxide, the citrate-or-glycinate page's finding, so an athlete taking citrate at a stated elemental dose absorbs their magnesium, and the salt question is not about whether the mineral arrives. The gut is the thing that decides: citrate carries a moderate osmotic laxative effect, more than bisglycinate and less than oxide, arriving within hours of a dose that exceeds absorption, and for an athlete that effect has a schedule, the before-or-after-gym page's session risk and the runners' page's trots, a citrate taken before a long run, a hard session or a race being the surest way to meet its effect at the worst mile, and a citrate at bedtime being the small-hours bathroom trip the night pages describe.

The athlete's salt decision, when citrate is fine and when it is not, and the question filed

The athlete's salt decision follows from the gut and the schedule. Citrate is fine with a daytime meal on a rest day, when nothing follows it that a loose stool would spoil, and it is the right salt for an athlete who is both short of magnesium and constipated, a real combination on a low-fibre cutting diet, where the laxative effect is a benefit rather than a side effect, the 3-in-1 page's one honest case. Citrate is a session risk before training, before a long run and above all on race day, the runners' page's rule that nothing new starts on race day applying doubly to a salt whose effect arrives mid-race, and it is the wrong salt for a nightly habit, the evening meal being most athletes' anchor and bisglycinate being the salt that sits there without a bathroom trip. Bisglycinate goes anywhere in an athlete's day, well absorbed, least laxative, fine before or after a session, fine at night, which is why the section recommends it as the default and citrate as the daytime rest-day alternative for those who tolerate it. Which is better for athletes, the comparison page asks, and the honest answer is that the claims are identical and the salt decides tolerance and timing, bisglycinate for the athlete who wants one salt at one anchor, citrate for the athlete who wants a daytime dose and does not mind the gut, and neither for a sleep or performance effect the register does not grant. The question filed: magnesium citrate is good for athletes in the sense any magnesium is, the claims being the mineral's and the absorption fine, with its laxative effect deciding when, fine by day on rest days or for constipation, a session risk before training or racing and the wrong salt at night, the worked example being the salt that goes anywhere in the day, bisglycinate at 300mg elemental, £19.99 for 90 days at 22p.

The verdict, the same claims and a gut that sets the clock

Is magnesium citrate good for athletes: in the sense any magnesium is, the claims being the mineral's and identical to glycinate's, muscle function, energy metabolism, electrolyte balance and fatigue, with citrate's absorption fine and its moderate laxative effect deciding the schedule, fine with a daytime meal on a rest day or for a constipated athlete, a session risk before training, a long run or a race, and the wrong salt for a nightly habit, the salt deciding tolerance and timing and never the claims. The salt that goes anywhere in an athlete's day: Futuro Labs Magnesium Glycinate, bisglycinate, 300mg elemental at 80% NRV, £19.99 for 90 days at 22p a day.

What to check on the label

Questions people also ask

Is magnesium citrate or glycinate better for athletes?

The claims are identical and the absorption is roughly level, so the salt decides tolerance and timing: bisglycinate is the least laxative and goes anywhere in the day including before sessions and at night, while citrate's moderate laxative effect makes it a daytime rest-day salt.

What are the benefits of magnesium glycinate and citrate?

One list, the mineral's: a contribution to normal muscle function, energy-yielding metabolism, electrolyte balance, protein synthesis, nervous system and psychological function and the reduction of tiredness and fatigue, real where an athlete runs short and nothing where they are replete.

Can I take magnesium citrate before a run or a workout?

Better not: citrate's osmotic effect arrives within hours of a dose that exceeds absorption, so a pre-session or pre-race citrate risks the runner's trots mid-effort, and bisglycinate or the evening meal avoids it.

When is magnesium citrate the right choice for an athlete?

With a daytime meal on a rest day for an athlete who tolerates it, and especially for one who is both short of magnesium and constipated on a low-fibre cut, where the laxative effect is a benefit rather than a side effect.

Does magnesium citrate improve athletic performance?

No more than any salt: repletion improves performance markers in athletes with low or marginal status and nothing in the replete, and no performance or sleep effect is granted by the register to citrate, glycinate or magnesium itself.

Sources

1. Walker AF, Marakis G, Christie S, Byng M. Mg citrate found more bioavailable than other Mg preparations in a randomised, double-blind study. Magnesium Research 2003;16(3):183-191. PubMed record
2. Firoz M, Graber M. Bioavailability of US commercial magnesium preparations. Magnesium Research 2001;14(4):257-262. PubMed record
3. The GB claims register, magnesium entries: magnesium contributes to a reduction of tiredness and fatigue, normal psychological function, normal nervous system function, normal muscle function and electrolyte balance, among others. https://www.gov.uk/government/publications/great-britain-nutrition-and-health-claims-nhc-register
4. Maughan RJ, Shirreffs SM. Muscle cramping during exercise: causes, solutions, and questions remaining. Sports Medicine 2019;49(Suppl 2):115-124. PubMed record

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