August 24, 2026
If you experience recurring muscle cramps, you’ve probably heard the same advice over and over again: “Try magnesium.”
Magnesium has become almost synonymous with muscle cramps. Walk into a health-food store or search online for solutions to nighttime leg cramps, and magnesium is likely to be one of the first recommendations you encounter.
But what happens when magnesium doesn’t solve the problem?
One nutrient that is often overlooked is potassium.
Potassium plays an important role in normal muscle and nerve function, and it is an essential mineral that we need to obtain regularly through our diet. Health Canada’s dietary reference values illustrate just how much potassium adults generally require each day. For example, the adequate intake is 3,400 mg per day for men and 2,600 mg per day for women ages 19–50. (Canada)
That brings up an interesting question:
Is eating one banana a day enough potassium to support your overall needs?
Usually, the answer is not necessarily.
At my Toronto chiropractic clinic, I have had patients who reported significant improvements in recurring cramping after working with a healthcare professional to address their overall nutrition, including potassium intake. However, this is an observation from clinical practice—not proof that potassium supplementation will eliminate cramps for everyone.
And that’s an important distinction.
Why Everyone Talks About Magnesium for Muscle Cramps
Magnesium gets a tremendous amount of attention when it comes to muscle cramps.
The reasoning seems straightforward. Magnesium is involved in normal muscle and nerve function, so it is tempting to assume that taking more magnesium will automatically reduce cramping.
But the scientific evidence is more complicated.
A Cochrane review examining magnesium supplementation for skeletal muscle cramps found that magnesium was unlikely to provide a clinically meaningful preventive benefit for older adults with muscle cramps. Evidence for other populations has been inconsistent. (PubMed)
This doesn’t mean magnesium is unimportant.
Magnesium is an essential nutrient, and inadequate intake can certainly be a nutritional concern. But “magnesium is important for muscles” does not automatically mean “magnesium supplementation will fix your cramps.”
If you’ve been taking magnesium and you’re still experiencing frequent cramps, it may be worth looking at the bigger picture rather than simply taking more of the same supplement.
Potassium Is Often Overlooked
Potassium is another electrolyte involved in normal nerve and muscle function.
Yet it doesn’t receive nearly as much attention in conversations about muscle cramping.
Part of the reason may be the familiar advice to “just eat a banana.”
Bananas do contain potassium, making them a convenient nutritious food. But one banana is only one component of an entire day’s nutritional intake. Health Canada’s dietary reference values demonstrate that daily potassium needs are measured in thousands of milligrams, not hundreds. (Canada)
Health Canada’s Canadian Nutrient File provides nutrient information for a wide variety of foods, demonstrating that potassium can come from many different foods—not just bananas. (Food and Nutrition Canada)
So if someone eats one banana every day but has a generally low-potassium diet, it would be a mistake to assume that the banana automatically means their potassium intake is adequate.
Your diet matters more than one “cramp-fighting” food
Rather than thinking:
“I eat a banana, so I must be getting enough potassium.”
It can be more useful to think about your overall dietary pattern.
Potassium is found in many foods, including fruits and vegetables, legumes, dairy products, and other whole foods. A varied diet can provide potassium from multiple sources.
And importantly, more is not always better.
Potassium supplementation isn’t something everyone should start on their own. Certain medical conditions and medications can affect potassium levels, and excessive potassium can be dangerous in susceptible individuals. If you are considering a potassium supplement, discuss it with an appropriate healthcare professional first.
Could Your Muscle Cramps Actually Be Coming From Somewhere Else?
This is one of the most important questions I ask when evaluating someone with recurring muscle cramps.
Not every cramp is caused by a nutritional deficiency.
Muscle cramping can have many potential contributors, including exercise, fatigue, hydration status, medications, medical conditions, and neuromuscular factors.
This is where a proper assessment becomes important.
At my Toronto clinic, I often see people who have spent months trying to solve a recurring muscular problem by changing supplements, stretching more, or simply pushing through it.
Sometimes nutrition may be part of the picture.
But sometimes the issue is how the nervous system and musculoskeletal system are functioning together.
Excessive Neuromuscular Tension May Be Part of the Picture
Imagine spending eight hours at a desk on Bay Street, followed by a workout, followed by several more hours sitting at home.
Or perhaps you’re an active Toronto cyclist who spends your weekends riding the Don Valley Trail.
Your muscles don’t exist in isolation.
Your posture, movement patterns, workload, joint mechanics, and nervous-system control can all influence how your body moves and how muscles are recruited.
If a muscle is repeatedly being asked to work harder than it should, or if surrounding joints and tissues aren’t moving efficiently, the resulting muscular tension may contribute to discomfort or cramping.
That doesn’t mean every cramp is caused by “misalignment,” and it doesn’t mean chiropractic care can treat every underlying cause of cramping.
It means that nutrition is only one potential piece of a much larger puzzle.
How a Chiropractic Assessment Can Help
When someone comes into my clinic with recurring muscle tension or cramping, I don’t want to immediately assume that the solution is another supplement.
I want to understand the person in front of me.
A chiropractic assessment can look at factors such as:
This can help determine whether there are mechanical or neuromuscular factors that may be contributing to the problem.
At Dr. Mateusz Krekora Chiropractic Clinic, our NeuroStructural approach focuses on identifying contributing factors rather than simply chasing symptoms.
That distinction matters.
If a nutritional issue is contributing to your cramps, improving nutritional adequacy may be appropriate.
If excessive neuromuscular tension or movement dysfunction is contributing, nutrition alone may not address the entire problem.
And sometimes, neither is the primary issue.
Don’t Assume Your Cramps Are a Magnesium Problem
The biggest takeaway isn’t that potassium is “better” than magnesium.
It isn’t that everyone with muscle cramps should take potassium.
In fact, current research does not provide strong evidence that potassium supplementation is an effective treatment for ordinary muscle cramps. A recent systematic review found that potassium supplementation remains unsupported as a general cramp intervention. (PubMed)
Instead, the lesson is that muscle cramps deserve a more complete assessment.
If you’re already eating a balanced diet and getting adequate nutrients, taking additional supplements may not solve the underlying problem.
And if magnesium hasn’t helped, that doesn’t necessarily mean you need a different supplement.
It may mean you need to ask a different question:
“Why am I cramping in the first place?”
A More Complete Approach to Recurring Muscle Cramps
For someone dealing with frequent cramps, I recommend thinking about the problem from several angles.
1. Look at your overall nutrition
Don’t focus on one food or one mineral.
Consider whether your overall diet provides adequate amounts of essential nutrients. Health Canada’s Dietary Reference Intakes calculator can help illustrate how nutrient requirements vary according to age, sex, and other factors. (Health Infobase)
2. Don’t automatically assume magnesium is the answer
Magnesium is important, but research on supplementation for ordinary muscle cramps is far from conclusive. (PubMed)
3. Consider potassium as part of the nutritional picture
Potassium deserves attention because it is an essential mineral and daily requirements are substantial.
But supplementation should be individualized and discussed with a healthcare professional rather than treated as a universal remedy.
4. Consider mechanical and neuromuscular factors
If your cramps continue despite addressing nutrition, consider whether movement patterns, muscular tension, posture, training load, or joint mechanics could be contributing.
This is where a proper Chiropractic assessment can be valuable.
5. Don’t ignore persistent or unusual symptoms
Recurring or severe muscle cramps can sometimes be associated with underlying medical issues. If your cramping is persistent, worsening, unusually severe, associated with weakness or other symptoms, or started after a medication change, speak with your physician or another appropriate healthcare professional.
The Bottom Line
Magnesium gets most of the attention when people talk about muscle cramps.
But your muscles don’t operate on magnesium alone.
Potassium is an essential mineral that is often overlooked, and one banana a day doesn’t automatically mean you’re meeting your daily potassium needs. At the same time, potassium supplementation isn’t a proven universal treatment for muscle cramps, and taking it without professional guidance isn’t appropriate for everyone.
From my experience in practice, some patients have reported that addressing potassium intake was an important part of reducing their recurring cramps.
But when nutritional factors aren’t the primary cause, another approach may be necessary.
Your cramping could potentially be influenced by excessive neuromuscular tension, movement dysfunction, posture, training demands, or other musculoskeletal factors.
That’s why I believe the most useful approach isn’t simply asking:
“What supplement should I take?”
It’s asking:
“What is contributing to my cramping?”
At Dr. Mateusz Krekora Chiropractic Clinic in Toronto, we take that broader approach by assessing the neuromusculoskeletal system and looking for contributing factors that may be overlooked.
If recurring muscle cramps are interfering with your workouts, sleep, cycling, workday, or quality of life, consider getting a proper assessment rather than continuing to guess.
Book Your Free Case Review and let’s take a closer look at what’s going on.
This article is for informational purposes only and should not be taken as medical advice. Please consult a licensed chiropractor before starting any treatment.
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