Research-Based

Best Potassium Supplements

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By Alexa DaFonte

Reviewed by Juliana Tamayo, MS, RDN - Last Updated

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Potassium stands as a vital mineral for your body’s optimal functioning. As the third most abundant mineral in the body, it serves as an essential electrolyte. Potassium creates positively charged ions that facilitate muscle contraction, fluid balance, neurological function, and nerve impulse transmission. When potassium levels fall out of balance, electrolyte stability suffers, triggering various health complications.

As the primary electrolyte in intracellular fluid (ICF), potassium maintains the critical balance between fluid inside and outside cells. Proper potassium and other electrolyte levels preserve this delicate equilibrium. When disrupted, cell shape and function deteriorate. Moreover, potassium ions transmit nerve impulses that enable communication between the brain and body. These impulses control muscle movement, contraction, and other vital bodily functions.

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What Are The Different Types Of Potassium Supplements?

Several potassium forms exist in supplemental versions, including gluconate, aspartate, chloride, citrate, bicarbonate, and chelate. Potassium chloride represents the most widely used supplemental form. Regardless of which type you choose, always take it with water, juice, or food since nausea and stomach upset are common side effects.

different forms of potassium

What Are The Benefits Of Taking Potassium Supplements?

Potassium supports numerous essential bodily functions. Here are the key functions and benefits of adequate potassium levels:

  • Proper nerve impulse generation
  • Allows for proper neurological functioning and communication within the body
  • Proper muscle movement and contraction
  • Heart muscle contraction and function
  • Proper electrolyte balance in the body and cells
  • May help reduce blood pressure
  • May help prevent strokes
  • May help prevent bone-related disorders like Osteoporosis
  • Prevents the loss of muscle mass
  • Prevents bone loss
  • Allows for sufficient bone and muscle strength
  • Increases urine production
  • Reduces water retention 

Should I Take A Potassium Supplement?

While most Americans consume insufficient potassium, this doesn’t necessarily indicate deficiency. Low potassium levels become life-threatening only when the body rapidly loses potassium through diarrhea or vomiting. Such situations require immediate medical attention, with potassium and other electrolytes administered medically to restore balance.

Daily potassium supplementation is typically discouraged since supplements are restricted to just 99 mg of potassium—significantly less than dietary sources provide and far below daily requirements. This limitation exists because excessive potassium can prove toxic to the heart and digestive system. High supplemental doses can also impair the body’s ability to eliminate excess potassium, potentially causing electrolyte imbalances.

While adequate potassium remains important, dietary sources offer the safest approach. Some individuals may require potassium supplements, but only after consulting with a doctor. Those with kidney disease, advanced age, or blood pressure medications face particular risks from increased potassium intake.

Do Potassium Supplements Work?

Potassium supplement effectiveness depends entirely on your specific needs. Since excessive potassium can be fatal, daily supplementation is unnecessary and provides minimal potassium due to toxicity concerns. Healthy individuals should obtain adequate potassium from dietary sources like bananas and avocados.

However, supplemental potassium becomes invaluable during medical emergencies involving electrolyte imbalances caused by dehydration, vomiting, or diarrhea. In these cases, doctors may prescribe potassium supplements to counteract dangerous electrolyte disruptions.

Best Potassium Supplements

NatureMade Potassium Gluconate Tablets

NatureMade Potassium Gluconate Tablets

This product delivers 550 mg of potassium gluconate and supports proper heart muscle and nerve function. It contains no artificial flavors or colors.

GET THE BEST PRICE ON NATUREMADE POTASSIUM GLUCONATE TABLETS

Now Foods Potassium Citrate Powder

Now Foods Potassium Citrate Powder

This powder form provides 440 mg of potassium citrate and supports muscle contraction and electrolyte balance. It’s tasteless with no additional ingredients.

GET THE BEST PRICE ON NOW FOODS POTASSIUM CITRATE POWDER

Nutricost Potassium Citrate

Nutricost Potassium Citrate

This capsule form contains 99 mg of potassium citrate and is non-GMO and gluten-free. It offers excellent value with 500 capsules per bottle at an affordable price point.

GET THE BEST PRICE ON NUTRICOST POTASSIUM CITRATE

Alternatives To Potassium Supplements

Dietary sources provide a safer, more reliable method for obtaining adequate potassium. Incorporate these excellent potassium sources into your diet:

  • Beet greens
  • White beans
  • Soybeans
  • Avocado
  • Banana
  • Sweet potato
  • Tomatoes 
  • Cantaloupe 
  • Kale
  • Spinach
  • Portobello mushrooms

Using Potassium To Promote Your Health

As the third most abundant mineral in your body, potassium plays an essential role in overall health. This key electrolyte regulates muscle function, nerve impulses, and neurological communication. While many people consume inadequate potassium, true deficiencies remain uncommon. Therefore, recreational supplementation isn’t necessary. In fact, excessive potassium can harm your health, particularly for those with kidney disease or advanced age.

Individuals with electrolyte imbalances may require supplemental potassium, but only under medical supervision. In these situations, potassium supplements can be life-saving by restoring critical bodily functions. For healthy individuals, incorporating potassium-rich foods like bananas, sweet potatoes, and avocados into daily meals provides the safest and most effective approach.

Now that you know the best potassium supplements to take, maybe you’d like to add a few more supplements to your routine? If so, you may also want to know about the best B12 Supplements or the best Nitric Oxide supplements.

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Alexa DaFonte

With a degree in Nutrition and Health Sciences from the University of Massachusetts Amherst, Alexa brings a vast knowledge of nutritional sciences, especially as it intersects with modern health and wellness. Due to her passion for a healthy lifestyle, she enjoys spreading awareness of the science behind many of her nutrition practices.