Electrolytes are minerals that carry an electrical charge. They play a vital role in the human body, affecting everything from heartbeat to muscle contraction. Electrolyte levels that are too high or too low can cause health problems.
This article discusses the role of electrolytes in health, electrolyte imbalance, and supplementation.
What Are Electrolytes?
On a molecular level, electrolytes are chemical substances that have a positive or negative electrical charge when dissolved in water. Because of this, they are able to conduct electricity. When not dissolved, electrolytes are found in a salt form, which has a neutral charge.
Electrolytes are obtained in the diet through various foods. Most water is not chemically pure and contains trace levels of electrolytes.
Vital Body Functions Maintained by Electrolytes
Electrolytes are involved in practically everything your body does. They are present in blood plasma and inside cells, where they help to stabilize cell membranes.
Electrolytes also maintain protein structure and fluid balance. Electrolytes play a role in chemical reactions in the body, and they help transport substances into and out of cells.
Some bodily processes that rely on electrolytes include:
- Conduction of heartbeat and contraction of heart muscle
- Dilation and contraction of blood vessels
- Conduction of nerve impulses
- Contraction of muscles
- Filtration in the kidneys
- Gastrointestinal movement
- Maintaining proper hydration
- Maintaining internal pH levels (keeping a proper acid-base balance)
List of Electrolytes in the Human Body
The following electrolytes have important function in the body:
- Sodium
- Potassium
- Chloride
- Magnesium
- Calcium
- Phosphorus
Electrolyte Imbalance
The body keeps electrolytes at optimal levels by regulating absorption in the gastrointestinal tract and excretion in the urine and stool. Problems with intake, absorption, or excretion of electrolytes can lead to imbalance, which can cause a range of symptoms.
Levels of electrolytes can be measured by simple blood tests. High levels of electrolytes are denoted by the prefix "hyper." For example, hypercalcemia means calcium levels in the blood are elevated. The prefix "hypo" indicates low levels of electrolytes, so hypokalemia means potassium levels in the blood are low.
Causes of Electrolyte Imbalance
Electrolyte levels that are too high or too low can have several causes, including:
- Low intake: A diet with insufficient nutrients can lead to electrolyte deficiency.
- Fluid losses: Diarrhea and vomiting can lead to low electrolyte levels.
- Certain medications: Diuretics can cause electrolyte loss in the urine and stool.
- Kidney disease: The kidneys play a large role in managing electrolyte levels, and levels can be affected by kidney disease.
- High acidity in the blood: In an attempt to compensate for acidosis (too much acid in body fluids) the kidneys reabsorb bicarbonate.
Symptoms of Electrolyte Imbalance
Symptoms of electrolyte imbalance vary depending on which electrolyte is affected and whether levels are too high or too low. Some of the more common electrolyte imbalances are discussed below.
Sodium Imbalance
Hyponatremia, or low sodium level in the blood, is the most common electrolyte disturbance. It can have many causes, including:
- Dehydration or overhydration
- Heart failure
- Kidney problems
- Liver disease
- Thyroid disorders
- Medications
Hyponatremia can cause swelling in the brain. Symptoms of hyponatremia include:
- Fatigue
- Confusion
- If severe, exaggerated reflexes
- If severe, seizures
Hypernatremia refers to excessive levels of sodium in the blood. Most often, high sodium levels are seen in elderly people who are not drinking enough water. Infants can also be affected. Symptoms include dry mouth, thirst, fatigue, agitation, and confusion.
Potassium Imbalance
Hypokalemia, or low potassium levels in the blood, can occur with fluid losses, low intake, or when potassium shifts inside of cells. This shift can happen for several reasons, including high blood pH (alkalosis) in the blood and certain medications.
Diuretics are a common cause of hypokalemia. Hypokalemia can cause:
- Muscle cramping or weakness
- Constipation (difficulty passing stool)
- Arrhythmia (irregular or abnormal heart rhythm)
Elevated potassium level is a common problem in people with kidney disease, and can occur with low blood pH (acidosis) and medications. ACE inhibitors (angiotensin converting enzyme inhibitors), a commonly prescribed class of blood pressure medication, can cause hyperkalemia.
Elevated potassium may not cause any symptoms, but can lead to serious arrhythmias.
Calcium Imbalance
Hypocalcemia can be caused by low levels of parathyroid hormone, vitamin D deficiency, and certain medications. Symptoms include:
- Fatigue
- Numbness and tingling
- Muscle cramps
- Arrhythmias
- Seizures (when severe)
Hypercalcemia is commonly caused by hyperparathyroidism, a condition in which the parathyroid glands make too much parathyroid hormone (excreted from four glands in theneck, behind the thyroid).
Cancer is another common cause of high calcium levels. Symptoms include:
- Constipation and nausea
- Kidney stones
- Frequent urination
- Bone pain
- Confusion
Magnesium Imbalance
Hypomagnesemia causes include common medications like diuretics, laxatives, and stomach acid lowering medication called proton pump inhibitors. Symptoms are similar to other electrolyte disturbances, such as fatigue and gastrointestinal symptoms.
Hypermagnesemia is less common and typically occurs in people with kidney disease who take magnesium-containing medications. Symptoms include:
- Weakness
- Exaggerated reflexes
- Low blood pressure
- Muscle weakness
- Heart rhythm abnormalities
Monitoring and Treating Electrolyte Imbalance
Monitoring
Not everyone requires electrolyte monitoring, but if you have certain conditions or take certain medications, your healthcare provider can monitor electrolyte levels with a simple blood test.
Electrolyte Testing
The basic metabolic panel includes sodium, potassium, chloride, bicarbonate, and calcium. Magnesium and phosphorus can also be measured by separate blood tests.
Treatment Overview
The priority of treatment should be correcting the underlying cause of electrolyte imbalance. Supplementation may be required for managing low electrolyte levels. Treatment includes:
- Oral rehydration therapy is a special liquid preparation that contains electrolytes and sugar. It can be helpful in situations of excessive electrolyte loss from dehydration. Pedialyte is an example of oral rehydration therapy that can be purchased at a pharmacy.
- Electrolyte replacement therapy can also be given for supplementation. Some electrolyte supplements, like those containing magnesium and calcium, can be purchased over the counter, without a prescription. Others, like potassium chloride, require a prescription.
Prevention
For most people, eating a varied diet and staying hydrated are all you need to do to maintain electrolyte balance.
People who have kidney disease and are prone to elevated electrolyte levels (such as potassium and phosphate) should follow a special diet that limits these nutrients. They may also require medication called phosphate binders.
Those experiencing high levels of electrolyte loss through gastrointestinal fluid losses or severe exertion with excessive sweating should take care to stay hydrated and consume beverages that contain electrolytes. Be mindful of the high sugar content in most beverages marketed for this purpose.
Sources of Electrolytes
Foods With Electrolytes
Some healthy sources of electrolytes include:
- Fruits like bananas, watermelon, and lemons
- Vegetables like leafy greens and avocados
- Whole grains
- Nuts and beans
Drinks With Electrolytes
Drinks that contain electrolytes include:
- Coconut water
- Milk
- Fruit juices and smoothies
Marketed Sports Drinks
Sports drinks like Gatorade and Powerade also contain electrolytes and were designed for electrolyte replacement for athletes experiencing excessive electrolyte loss through sweating. However, these beverages often have high amounts of sugar.
Recommended Intake
Recommended intake for various electrolytes according to U.S. Department of Agriculture (USDA) guidelines is shown below. Note that ranges are given, and exact recommendations depend on age and sex.
- Potassium: 2,600–3,400 milligrams
- Sodium: 2,300 milligrams (note that the American Heart Association recommends 1,500 milligrams per day)
- Phosphorus: 700 milligrams
- Calcium: 1,000–1,200 milligrams
- Magnesium: 310–420 milligrams
Should I Supplement My Diet With Electrolytes?
Most people do not require electrolyte supplementation. By eating a nutritious diet and staying hydrated with water you should get sufficient electrolytes.
During times of excessive fluid loss (through diarrhea, vomiting, or excessive sweating), oral rehydration solutions can be used.
People with medical conditions and those who take certain medications that alter electrolyte balance may be prescribed electrolyte supplements, but this should always be monitored by a healthcare provider.
Summary
Electrolytes are a vital for the function of your organ systems. Having levels that are too high or too low can cause problems. The best way to maintain normal electrolyte levels is by eating a healthy and varied diet that includes fruits and vegetables, avoiding excessive intake of any one type of food or nutrient, and staying hydrated.
A Word From Verywell
Most people don't need to pay much attention to electrolyte levels and can maintain healthy levels with a nutritious diet and adequate hydration. Taking electrolyte supplements can be problematic because beverages that market themselves for electrolyte repletion often are filled with sugar. And taking over-the-counter supplements can be unnecessary, costly, and even lead to side effects from elevated levels. The best way to maintain electrolyte levels is to eat a nutritious diet and stay hydrated.
Frequently Asked Questions
What is a good source of electrolytes?
Electrolytes are found in a variety of foods and drinks. Fruits, colorful vegetables, beans, and nuts are all healthy sources of electrolytes. Beverages like coconut water and fruit smoothies also provide electrolytes.
What are the main electrolytes?
The most important electrolytes found in the highest amounts in the body are sodium, potassium, chloride, bicarbonate, chloride, calcium, phosphate, and magnesium.
What is the best way to replenish electrolytes?
Most people get sufficient electrolytes in their diet. For situations with high levels of electrolyte loss, such as gastrointestinal illness and excessive sweating, electrolyte replenishment can be achieved with an oral rehydration solution, such as Pedialyte. Be aware that sports drinks have a lot of electrolytes but are often filled with sugar, which can make diarrhea worse.
Does lemon water have electrolytes?
Lemon water does have electrolytes and is a good source of potassium. According to the USDA, juice from one lemon contains approximately 48 milligrams of potassium, 3 milligrams of calcium, 3 milligrams of magnesium, 4 milligrams of phosphorus, and less than 1 milligram of sodium.
Is milk good for electrolytes?
Milk is a good source of electrolytes. According to the USDA, 1 cup of whole milk contains about 305 milligrams of calcium, 30 milligrams of magnesium, 250 milligrams of phosphorus, 375 milligrams of potassium, and 95 milligrams of sodium.
Does apple cider vinegar have electrolytes?
Apple cider vinegar is another good source of potassium. 1 tablespoon of Bragg's organic apple cider vinegar has 11 milligrams of potassium.
7 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
NIH National Library of Medicine. Fluid and electrolyte balance.
Roswell Park Cancer Center. Electrolytes: what are they? What happens when you don't have enough?.
Gankam K, Decaux G. Hyponatremia and the brain.Kidney International Reports.2018;3(1):24-35. doi:10.1016/j.ekir.2017.08.015
Kardalas E, Paschou S, et al. Hypokalemia: a clinical update.Endocrine Connections.2018;7(4):R135-R146. doi:10.1530/EC-18-0109
American Heart Association. Shaking the salt habit to lower blood pressure.
USDA. FoodData central.
By Angela Ryan Lee, MD
Angela Ryan Lee, MD, is board-certified in cardiovascular diseases and internal medicine. She is a fellow of the American College of Cardiology and holds board certifications from the American Society of Nuclear Cardiology and the National Board of Echocardiography. She completed undergraduate studies at the University of Virginia with a B.S. in Biology, medical school at Jefferson Medical College, and internal medicine residency and cardiovascular diseases fellowship at the George Washington University Hospital. Her professional interests include preventive cardiology, medical journalism, and health policy.
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FAQs
How much electrolytes is enough? ›
Electrolyte | Recommended intake, in milligrams (mg) | Recommended intake for people over 50, in mg |
---|---|---|
Sodium | 1,500 | 1,300 |
Potassium | 4,700 | – |
Calcium | 1,000 | 1,200 |
Magnesium | 420 for men, 320 for women | – |
- Confusion and irritability.
- Diarrhea or constipation.
- Fatigue.
- Headaches.
- Irregular or fast heart rate (arrhythmia).
- Muscle cramps, muscle spasms or weakness.
- Nausea and vomiting.
- Numbness or tingling in limbs, fingers and toes.
Sodium, potassium, and chloride are the significant electrolytes along with magnesium, calcium, phosphate, and bicarbonates.
What is an electrolyte your answer? ›An electrolyte is a medium containing ions that is electrically conducting through the movement of those ions, but not conducting electrons. This includes most soluble salts, acids, and bases dissolved in a polar solvent, such as water.
Can your body take in too many electrolytes? ›But just like anything, too many electrolytes can be unhealthy: Too much sodium, formally referred to as hypernatremia, can cause dizziness, vomiting, and diarrhea. Too much potassium, known as hyperkalemia, can impact your kidney function and cause heart arrhythmia, nausea, and an irregular pulse.
What is the best way to increase electrolytes? ›- Drink unsweetened coconut water. Coconut water is a good source of electrolytes. ...
- Eat bananas. ...
- Consume dairy products. ...
- Cook white meat and poultry. ...
- Eat avocado. ...
- Drink fruit juice. ...
- Snack on watermelon. ...
- Try electrolyte infused waters.
Electrolytes (sodium, potassium, magnesium, chloride and calcium) need to be in balance in order to maintain healthy blood, heart rhythm, muscle function and other important functions. Drinking too much water, can cause the electrolyte levels in the body to get out of whack and cause sodium levels plummet.
What do low electrolytes feel like? ›Common symptoms of electrolyte imbalance include irregular heartbeat, confusion, fatigue, lightheadedness, blood pressure changes, muscle weakness or twitching, numbness and seizures. In general, a person with an electrolyte imbalance does not feel very well or want to be involved in much activity.
What is the most important electrolyte to replenish? ›Sodium, which is an osmotically active anion, is one of the most important electrolytes. Sodium is necessary for muscle and nerve function and helps control fluids in the body, impacting blood pressure. Hyponatremia is a condition that occurs when the level of sodium in the blood is too low.
What has the most electrolytes to drink? ›Best Overall: Gatorade
The levels of electrolytes (sodium and potassium) are moderate and sensible with 160 mg of sodium and 45mg of potassium per 12 fluid ounce serving. You can also find Gatorade varieties with higher sodium, zero sugar or no calories depending on your needs.
Can I drink electrolyte water everyday? ›
Is it OK to drink electrolytes every day? You can drink electrolytes every day (or choose to consume a supplement instead). This is especially necessary if you exercise and/or sweat often. Electrolytes will help replace minerals, such as sodium, magnesium, and potassium, that are lost when you sweat or get sick.
Does salt give you electrolytes? ›Potassium and sodium are electrolytes that help your body function normally by maintaining fluid and blood volume. However, consuming too little potassium and too much sodium can raise your blood pressure. Though the words salt” and “sodium” are often used interchangeably, they do not mean the same thing.
What is an example of a weak electrolyte? ›Examples of weak electrolytes are Acetic Acid( C H 3 C O O H ) and Carbonic Acid ( H 2 C O 3 ) .
Is Gatorade an electrolyte? ›Yes. Gatorade is an electrolyte-rich drink that helps replace electrolytes that are lost in the body during exercise.
Is Gatorade better than electrolyte water? ›Pedialyte is intended to rehydrate people of all ages, from toddlers to adults. It's often recommended to people recovering from the stomach flu, other viruses, and athletes. In contrast, Gatorade is recommended for adults, specifically athletes, and it's meant to meet their athletic needs.
Can low electrolytes cause anxiety? ›Electrolyte Imbalance
If you have really high or low levels of electrolytes like sodium or potassium, it can cause anxiety or panic-like symptoms. These include shortness of breath, confusion, and rapid heartbeat. You might also be irritable, lightheaded, fatigued, or have headaches or nausea.
Pedialyte is the recommended beverage of choice for the elderly. Gatorade is a sports drink that's meant to restore electrolytes after exercise, but Pedialyte can renew electrolytes lost from exercise and other means, such as sweating, diarrhea, or fever.
How do you fix electrolyte imbalance? ›Eat electrolyte-rich foods.
Don't rehydrate with carbonated or energy drinks. They may cause a sudden spike in your blood sugar levels. To prevent electrolyte imbalance, drink plenty of water during physical activity. Eat a balanced diet containing electrolyte-rich foods.
- Nuts. Most types of nuts, especially almonds, brazil nuts and cashews, contain large amounts of magnesium, as well as significant amounts of calcium and potassium. ...
- Potatoes. ...
- Broccoli. ...
- Sunflower and pumpkin seeds. ...
- Cow's milk. ...
- Alternative milks. ...
- Coconut water. ...
- Pickle juice.
Some foods that contain electrolytes are: Sodium: cheese, peanut butter, savory light meals e.g. soups, chocolate milk. Potassium: banana, orange, sweet potato, green leafy vegetables, avocado.
What hydrates better than water? ›
Research shows that milk is one of the best beverages for hydration, even better than water or sports drinks. Researchers credit milk's natural electrolytes, carbohydrates, and protein for its effectiveness.
How do I make my own electrolyte water? ›- 1/4 tsp. salt.
- 1/4 cup pomegranate juice.
- 1/4 cup lemon juice.
- 1 1/2 cups unsweetened coconut water.
- 2 cups cold water.
- Additional options: sweetener, powdered magnesium and/or calcium, depending on needs.
In general, however, it usually takes about two hours for your body to rehydrate fully after drinking a significant amount of water. As for how you should rehydrate, water is the best choice. Sports drinks, such as Gatorade, can be helpful for athletes who need to replenish electrolytes.
What happens when your electrolytes are too low? ›When your body becomes low on electrolytes, it can impair your body's functions, such as blood clotting, muscle contractions, acid balance, and fluid regulation. Your heart is a muscle, so that means electrolytes help regulate your heartbeat.
Is there a home test for electrolytes? ›Are there at-home electrolyte blood test kits? No. Only trained medical professionals can do a blood draw for an electrolyte blood test. An electrolyte panel provides important information about body fluids, including your blood's acid-base balance.
Is lemon water good for electrolytes? ›Lemon juice contains electrolytes like sodium (Na), potassium (K), calcium (Ca), magnesium (Mg) which makes lemon water one of the best drinks for fitness purposes. Lemon water works for rehydration, may improve skin quality, and prevent kidney stones.
Can I put salt in my water for electrolytes? ›Salt can be added to water in small amounts to increase electrolyte levels. Most people know that salt contains sodium, but it actually also contains the minerals potassium, calcium, and magnesium.
What are 2 warning signs of dehydration? ›Two early signs of dehydration are thirst and dark-coloured urine. This is the body's way of trying to increase water intake and decrease water loss. Other symptoms may include: dizziness or light-headedness.
Is drinking water better than drinking electrolytes? ›So, when is it helpful to drink electrolyte-enhanced drinks? “In general, water should be sufficient hydration for a regular workout, but electrolyte drinks are beneficial in high intensity workouts in warm environments, regardless of duration,” says Dr. Sprague.
What's better than Pedialyte? ›Coconut water is the easiest Pedialyte alternative and a natural way to help your dehydrated child. Full of fluid-balancing potassium and sodium, it's nature's solution for sick tummies. Coconut water is low in sugar and high in electrolytes, which is the perfect recipe for your sick child.
Is Gatorade better than water? ›
While Gatorade can help you stay hydrated, it's best to only drink it when needed. For people who aren't exercising for at least one hour, five days per week, water is the best bet for staying hydrated. Electrolytes coming from natural sources without added sugars and dyes are recommended.
Is Pedialyte the best electrolyte drink? ›Pedialyte might be the most well-known electrolyte supplement, and it is our top pick because it is a safe, effective, and readily available product. It includes sodium, the most abundant electrolyte, as well as chloride, a key electrolyte that some electrolyte drinks skip out on.
Is coconut water better than Gatorade? ›It has five times more potassium than Gatorade or Powerade. Whenever you get cramps in your muscles, potassium will help you to get rid of the cramps. It's a healthy drink that replenishes the nutrients that your body has lost during a moderate workout.
Can I eat a pinch of salt for electrolytes? ›Sea salt
Sodium is one of the electrolytes that we're quickest to lose through sweat. Luckily, ingesting salt is a quick and easy way to replace what we lose. Salt also contains the electrolytes magnesium, calcium, and potassium; so it's good for more than just sodium replenishment.
If you replace lost fluids with plain water, you can end up diluting essential electrolytes like sodium until your cells can't function properly. For proper hydration you need both electrolytes and water. So the minerals in cranberry juice can help keep you hydrated, but at the cost of a high sugar intake.
Is Himalayan pink salt an electrolyte? ›Mineral-rich Himalayan salt contains lots of electrolytes. They're great for detoxing the body and help your kidneys do just that. Electrolytes carry a charge that ionizes when dissolved in water.
What is one example of a strong electrolyte? ›Examples of strong electrolyte are hydrochloric acid( H C l ) and sodium hydroxide ( N a O H ) .
What are 2 strong and weak electrolytes? ›Strong electrolytes are electrolytes that are entirely ionized. Eg sodium chloride, potassium chloride, sodium hydroxide, potassium hydroxide. While weak electrolytes are electrolytes that are partially ionized. Eg, oxalic acid, formic acid, acetic acid, ammonium hydroxide, calcium hydroxide.
What are 4 conditions of electrolyte imbalance? ›- vomiting.
- diarrhea.
- not drinking enough fluids.
- not eating enough.
- excessive sweating.
- certain medications, such as laxatives and diuretics.
- eating disorders.
- liver or kidney problems.
We recommend one stick per day for healthy adults, but be sure to listen to your body's needs and response when drinking Liquid I.V. Energy Multiplier. For any special health concerns, please consult your doctor.
What electrolytes affect the heart? ›
The electrolytes potassium, magnesium, sodium and calcium play a crucial role in the function of the myocardium, the muscular tissue of the heart.
Is it OK to drink electrolytes everyday? ›Is it OK to drink electrolytes every day? You can drink electrolytes every day (or choose to consume a supplement instead). This is especially necessary if you exercise and/or sweat often. Electrolytes will help replace minerals, such as sodium, magnesium, and potassium, that are lost when you sweat or get sick.
How much electrolytes should I drink for dehydration? ›Maintaining electrolyte levels
Dr. Jones recommends drinking about two cups of fluid two hours before any physical activity. Then, try to drink 4 to 6 ounces every 15 to 20 minutes during physical activity.
The suggested intake is 800 mg per day for both males and females.
Can I drink 2 electrolytes a day? ›If you're fatigued, cramping, or experiencing discomfort, increase your intake to two or three daily servings. This is where being in tune with your body comes in handy. For example, if you're someone who sweats a lot, you may need to have an electrolyte drink before, during, and after your workout.
What drink has the highest electrolytes? ›Best Overall: Gatorade
The levels of electrolytes (sodium and potassium) are moderate and sensible with 160 mg of sodium and 45mg of potassium per 12 fluid ounce serving. You can also find Gatorade varieties with higher sodium, zero sugar or no calories depending on your needs.
Yes. Gatorade is an electrolyte-rich drink that helps replace electrolytes that are lost in the body during exercise. Electrolytes can be lost through sweat and urine, and are used in daily bodily functions such as regulation of the nervous system.
Is drinking too much water bad for electrolytes? ›Drinking too much water, can cause the electrolyte levels in the body to get out of whack and cause sodium levels plummet. The nerve and heart issues that occur with over-hydration can be deadly.
Is it better to hydrate with water or electrolytes? ›“In general, water should be sufficient hydration for a regular workout, but electrolyte drinks are beneficial in high intensity workouts in warm environments, regardless of duration,” says Dr. Sprague.
What is the best way to get electrolytes into your body? ›The best way to get electrolytes is by consuming them through your diet. You can get electrolytes from foods like chicken, watermelon, and avocado. You can also get electrolytes through drinks like 100% fruit juice, coconut water, or sports drinks.
How quickly do electrolytes work? ›
Drink water, but replace fluids with a drink that contains electrolytes if you experience significant sweating or fluid losses from vomiting and diarrhea. You should feel better after five or 10 minutes.
Is Liquid I.V. better than Gatorade? ›Liquid IV vs Gatorade? We're not surprised you asked. Liquid IV doesn't come ready to drink like Gatorade, but it has fewer sugars and calories. It also contains vitamins and minerals that Gatorade doesn't.
Can too much electrolytes raise blood pressure? ›Potassium and sodium are electrolytes that help your body function normally by maintaining fluid and blood volume. However, consuming too little potassium and too much sodium can raise your blood pressure.
Can I drink Pedialyte everyday? ›"It is not designed for everyday use or hydration needs where water is adequate — so it's always a good idea to check with your doctor first to see if daily use is recommended," Williams says.