Yes, magnesium and potassium can help improve sleep by supporting relaxation, regulating sleep hormones, and calming the nervous system, with studies showing benefits, especially for those with deficiencies or related conditions like insomnia and diabetes. Magnesium helps activate calming neurotransmitters like GABA, while potassium aids muscle relaxation and nerve function, with some research indicating a combined approach is particularly effective.
Magnesium has always been touted as the super mineral for sleep, but recent research suggests that its friend, potassium, may be just as beneficial—and this is why swapping your morning potassium supplement for the evening might be ideal.
One of the best forms of magnesium is magnesium glycinate, as it's well-absorbed and doesn't typically cause digestive issues like some other forms (such as magnesium citrate, which can have a laxative effect). Always consult with your midwife or healthcare provider before adding new supplements to your routine.
You definitely can (and probably should) take both of these together, whether in your diet or in supplement form. Studies have even found that together, the magnesium-potassium combination provides powerful support for cardiovascular health, especially when it comes to healthy blood pressure support.
Experts recommend between 400 and 420 mg of magnesium for men and 310 to 320 mg for women per day. They also recommend 4000 mg of potassium daily. Therefore, feel free to use high-quality dietary supplements to support your intake.
Many people are not getting adequate amounts of magnesium or potassium in their diet. Therefore, taking magnesium and potassium supplements together may support your heart health.
It turns out that magnesium can bind to and either activate or dampen important neurological receptors in our body which have a role to play in sleep. Fluctuating levels of magnesium in the body can also impact how much hormones we produce, like melatonin (the sleep hormone) and cortisol (the stress hormone).
If you're not sure where to begin, magnesium glycinate is an excellent place to start for sleep and anxiety. For sharper thinking or brain-based anxiety, try magnesium L-threonate. And for calming both your mind and body, magnesium taurate offers a gentle, heart-centered approach.
Some good sources of magnesium are:
These results suggest that low potassium intake, indicated by lower potassium excretion, is associated with poor sleep quality in the general population, especially among women. Therefore, additional research is necessary to clarify the effect of increasing potassium intake to improve sleep quality.
For Sleep. If you're expecting Magnesium to knock you out like a sleeping pill, you might be waiting a while. While some people feel more relaxed within an hour, studies suggest it takes a few days to a couple of weeks of consistent use to improve sleep quality.
Your body needs magnesium to function normally. Symptoms of magnesium deficiency include low appetite, nausea or vomiting, muscle spasms or tremors and abnormal heart rhythms. A blood test or urine test can be used to diagnose magnesium deficiency.
A small drop in the blood potassium level often does not cause symptoms or causes mild to moderate symptoms, which may include:
You should not mix magnesium with certain antibiotics (tetracyclines, fluoroquinolones), bisphosphonates, diuretics, proton pump inhibitors, some blood pressure drugs, and diabetes medications, as it can block absorption or alter effects, requiring spacing or avoidance. Also, separate magnesium from high doses of zinc, iron, calcium, and high-fiber/phytate/oxalate foods to prevent interference with absorption.
Melatonin. The hormone melatonin helps control your natural sleep-wake cycle. Some research suggests that melatonin supplements might be helpful in treating jet lag or reducing the time it takes to fall asleep — although the effect is typically mild.
Magnesium L-threonate (MgT) is believed to not only help you fall asleep but also feel well-rested, alert, and functional during the day. People may benefit from this extra boost if they struggle with nightly sleep and the after-effects the following day.
Magnesium supplements are safe for most people to take daily, but taking more than 350 milligrams may cause side effects. Magnesium supplements can interact with some prescription drugs, so talk with a doctor before beginning magnesium.
While melatonin is best for resetting sleep cycles, magnesium enhances sleep depth and relaxation. Studies suggest that combining both, especially with vitamin B complex, offers significant benefits for insomnia.
Risks of Magnesium Supplements
Magnesium supplements can cause nausea, stomach pain, and diarrhea. Additionally, this mineral often cause softening of stool. Magnesium interactions: Magnesium may not be safe for individuals taking diuretics, heart medications, or antibiotics.
Waking up in the middle of the night is called insomnia, and it's a common problem. Mid-sleep awakenings often happen during periods of stress. Sleep aids that you can buy without a prescription rarely offer effective or long-term help for this problem.
On the other hand, some supplements, especially energy drinks, weight loss supplements, and cocoa products, as well as red yeast rice, garlic, policosanol, DHEA, chromium and high doses of vitamin D, vitamin b-12, potassium and coenzyme Q10 might interfere with sleep.
Key Takeaways. Magnesium and potassium work together in your body to support muscle, nerve, electrolyte, and heart function—so a deficiency in one may impact the other. While some might need supplements, the safer first step is to get magnesium and potassium through mineral-rich foods.
Conclusions: The study revealed that magnesium, potassium, and magnesium and potassium combined had a significant effect on serum cortisol and melatonin levels (sleep hormones). In addition, supplementation significantly decreased the severity of insomnia among patients with diabetes by improving sleep duration.
Take potassium and magnesium supplements right after meals or with food. Follow the label on how often to take it. The number of doses you take each day, the time between doses, and how long you take it will depend on which medicines you were prescribed and your condition.