Best Potassium Supplements

When it comes to the best potassium supplements, the answer may not be so cut and dry. The reason being is that potassium is an essential mineral, but too much of it and the wrong kind of it can lead to some very serious side effects that you need to watch out for.

So in this article, we’ll be talking about the best potassium supplements on the market, but not before we discuss safety and other forms of getting potassium in your diet.

What is Potassium?

Potassium is a mineral and electrolyte. It’s involved in multiple important processes in the human body, including regulating the amount of water in the body, heart function, and muscle contractions. (1) (2)

Potassium is incredibly important, yet a large portion of the worldwide population doesn’t get enough of it in their diet. (3) (4)

Potassium Benefits

There are numerous health benefits that potassium has on our bodies.

Could Aid in The Prevention of Kidney Stones

Calcium buildup is one of the most common culprits of kidney stones and potassium has been shown to lower calcium levels in urine. (5) (6)

Large studies in both women and men have shown that there’s a correlation between higher potassium intake and a lower risk of kidney stones. (7) (8)

Could Help Prevent Osteoporosis

Some studies have shown that people who get more potassium in their diet have more dense and healthy bone mass. (9) (10)

Lowers Blood Pressure

In a meta-analysis of studies done on potassium’s effect on blood pressure, researchers found that people who had the highest potassium intake had lower blood pressure than the people who consumed very little potassium. (11)

May Provide Protection from Stroke

Multiple studies and meta-analyses on potassium and stroke have found that a higher intake of potassium is correlated with pretty significantly smaller risk of having a stroke. (12)(13)

Safety & When to Take a Potassium Supplement

The FDA has put certain restrictions in place for potassium supplements because of concerns over potassium overdosing. Namely, they’re concerned with the elderly, diabetics, people with heart conditions, and anyone who has any condition that affects kidney function because the kidneys regulate potassium levels in the blood. If you have any kidney function issues, taking potassium supplements could be dangerous, and the FDA doesn’t want supplements to pose a danger to anyone.

The recommended daily value for potassium intake is 4700 mg per day. But you won’t find near that amount in potassium supplements because the limit for manufacturers is doses of 100 mg.

That means that you have to get the majority of your potassium through foods rather than supplementation, which is a good idea anyway for any vitamin/mineral. Potassium supplements should really just be used when you absolutely need them.

Some potassium-rich foods that you can incorporate into your diet include:

  • Bananas
  • Avocados
  • Spinach
  • Beans
  • Potatoes
  • Sweet Potatoes
  • Pomegranate
  • Beets
  • Squash
  • Watermelon
  • Coconut Water

Considering the health concerns with potassium supplementation, the only instance in which you should do so is at the request of your doctor. With that said, in the following sections we’ll go over what we believe to be the best potassium supplements available on the market today.

#1: Best Potassium Supplement Overall: Thorne Research – Potassium Citrate

Image of a bottle of the best potassium supplement, Thorne Potassium Citrate

Thorne Research’s Potassium Citrate is our pick for the best potassium supplement on the market. This supplement ticks the boxes for the things that we like in supplements: high-quality, safe ingredients and a simple, straightforward formula.

This product contains 99 mg of potassium (2% of the daily value and not surprising considering the FDA’s guideline on 100 mg max for potassium supplements) and comes on veggie capsules. It does not contain gluten, metallic colorants, eggs, stearates, BPA, nut-based ingredients, any banned substances, high fructose corn syrup, artificial preservatives, or dairy. It comes in bottles of 90 capsules.

That’s pretty much it for this product; it’s simple and safe—just the way we like it.

If you have a potassium deficiency, this product is going to be as safe and effective as it gets as long as you’re combining it with a healthy diet full of potassium.


  • Contains the potassium needed to address a deficiency
  • Veggie capsules makes them vegan/vegetarian-friendly
  • No harmful ingredients/allergens
  • Simple formula
  • Reasonable pill size making them easy to swallow


  • Not a substitute for a diet high in potassium
  • Very low dose due to restrictions
  • Can cause stomach pain in some

Active Ingredient Quality:


Average Consumer Rating:

Thorne Research - Potassium Citrate - Highly-Absorbable Potassium Supplement for Kidney, Heart, and Skeletal Support - 90 Capsules
  • MUSCLE: Essential for skeletal muscle function*
  • URINARY TRACT: Alkalinizes the urine to promote good urinary tract health*
  • HEART: Supports cardiovascular health*
  • FREE FROM: Every Thorne product is made with the purest possible ingredients – without gluten or other major allergens (eggs, tree nuts, peanuts). This product also contains no soy, dairy, yeast, shellfish, or fish.

#2: Best Pill Alternative Potassium Supplement: BulkSupplements Potassium Citrate Powder

Image of a bag of BulkSupplements Potassium

If you prefer not to take your supplements in pill form for whatever reason, your best option is to go with BulkSupplements Potassium Citrate Powder.

This supplement comes with 99 mg of potassium (as potassium citrate). It’s free of sugar, soy, dairy, yeast, gluten or any additives. It’s also vegan and vegetarian-friendly.

As with all products by BulkSupplements, this contains pure and high-quality ingredients.

This product comes in powder form, so you have to mix it in with a drink of your choice. You can mix it with just water, as it dissolves pretty well and doesn’t have much of a taste, but it’s more pleasant if you have a certain juice or smoothie you like to mix it with.


  • Powder form is good for people who prefer not to take pills
  • Dissolves easily
  • Little to no taste
  • Easy on the stomach
  • Free of allergens and additives
  • Vegan/ vegetarian-friendly
  • High-quality ingredients


  • Easier to get an incorrect dosage with powder than with pills
  • Our batch we tested easily dissolved and had little taste but some consumers report that theirs was granulated and bitter so there may be some quality control issues on BulkSupplements’ end

Active Ingredient Quality:


Average Consumer Rating:

BulkSupplements Potassium Citrate Powder (500 Grams)
  • Clean & Pure Powder. No Fillers.
  • Factory Sealed Foil Zip Pouch.
  • Lab Tested for Verification & Guaranteed Purity.
  • Helps Regulate Blood Pressure.
  • Boosts Bone Health.

#3: Best Potassium Supplement For High Blood Pressure &/Or Cramps: Pure Encapsulations – Potassium (Citrate)

Image of a bottle of Pure Encapsulations Potassium Citrate

Our pick for the best potassium supplement for dealing with high blood pressure or cramps is Pure Encapsulations Potassium Citrate.

If you’re dealing with either of these conditions, it’s probably a good idea to address it with a higher dosage of potassium, and this supplement has it. It has 200 mg of potassium (as potassium citrate) which is 4% of the daily value.

This product comes in vegetarian capsules.

As with all Pure Encapsulations products, it’s free of “wheat and gluten; egg; peanuts; coatings and shellacs; GMOs; magnesium stearate; trans fats and hydrogenated oils; artificial colors, flavors, and sweeteners; unnecessary binders, fillers, and preservatives”.


  • Potent dose of potassium
  • Pure and clean ingredients
  • Certified gluten-free
  • Vegan/vegetarian-friendly
  • Free of allergens and additives


  • Capsules are a bit on the large side, which may make them slightly difficult for some people to swallow

Active Ingredient Quality:


Average Consumer Rating:

Pure Encapsulations - Potassium (Citrate) - Essential Mineral for Vascular Function and Overall Health* - 180 Capsules
  • Cardiovascular Function: Potassium is an essential mineral which offers a wide range of nutritional support to ensure healthy physiological functioning of diverse organ systems and is essential to cardiovascular function.*
  • Overall Physiological Support: Potassium activates many enzymatic reactions and is essential to a number of physiologic processes, including: transmission of nerve impulses; contraction of cardiac, smooth, and skeletal muscles; gastric secretion; renal function; tissue synthesis; and carbohydrate metabolism.*
  • Electrolyte Balance: Potassium works with sodium to maintain healthy water balance, heart rhythm, and nerve and muscle function.*
  • Pure Ingredients: Pure Encapsulations manufactures a line of hypoallergenic, research-based dietary supplements. Products are meticulously formulated using pure ingredients designed to deliver predictable results for the benefit of all patients, even the most sensitive.*
  • Free From: Pure Encapsulations products are free from wheat, gluten, egg, peanuts, magnesium stearate, hydrogenated fat, artificial sweeteners and colors, and other unnecessary excipients. Any product containing ingredients derived from allergens, such as soy, dairy or shellfish is clearly labeled. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

#4: Best Potassium Supplement for Keto: Code Age Keto Electrolytes

Image of a bottle of Code Age Keto Electrolytes

Code Age Keto Electrolytes is our choice for the best potassium supplement for keto.

A low-carb diet can deplete your electrolytes, and this supplement is formulated to address that. It has potent doses of several electrolytes. It contains 350 mg of sodium (from sodium chloride), 200 mg of magnesium (from magnesium chloride hexahydrate), 100 mg of potassium (from potassium chloride), and 99 mg of calcium (from calcium carbonate).

This is a good formula not just for people on a keto diet but also for athletes and people on low carb diets.

This supplement comes in vegetarian capsules and does not contain any sugar, yeast, starch, gluten, preservatives, artificial flavors or colors. It’s made in an FDA-registered, certified GMP facility.

It’s a little on the pricey side, but a bottle does contain 180 capsules.


  • Has a good selection of electrolytes
  • Potent dosages
  • Suitable for keto and low-carb diets
  • Good formula for athletes
  • Free of allergens and additives
  • Made in a GMP (Good Manufacturing Practice) facility
  • Vegan/vegetarian-friendly


  • Quality control could be improved

Active Ingredient Quality:


Average Consumer Rating:

Codeage Keto Electrolyte Supplement (Extra Strength) for a Low Carb Diet or Ketogenic Diet, Calcium Magnesium Sodium Potassium, Electrolytes Powder Salt Pills & Drink Hydration Tablets, 180 Capsules
  • KETO ELECTROLYTE SUPPLEMENT:  Zero carb electrolyte capsules specifically designed for low carb and ketogenic diets. This plant based formula designed to provide your body with electrolyte minerals (sodium, potassium, magnesium and calcium). Specific minerals are important to support hydration, replenishment and electrolyte balance. Codeage Keto Electrolytes was designed with ketogenic or low carb dieters but everyone can enjoy electrolytes in their diet.
  • PERFECT FOR KETO, LOW CARB & ATHLETES: Whether you need electrolytes for Keto, low carb diets or you’re a busy professional looking for an edge, our Electrolytes Supplement provides important salts and minerals in a zero carb electrolyte powder in a capsule format.
  • EASY TO SWALLOW ELECTROLYTE SALTS: Our convenient Electrolyte Capsules provides an electrolyte blend of Sodium, Magnesium, Potassium and Calcium. Unlike electrolyte powders and electrolyte drinks, our capsules are easy to swallow, tasteless and contain no preservatives or sugar.
  • MADE IN USA: Our electrolyte powder capsules are manufactured in the USA in an FDA registered facility that adheres to Good Manufacturing Practices (GMP). Our natural electrolyte tablets are free of gluten, soy, preservatives, dairy and are vegetarian.


You really can’t go wrong with any of these supplements as they’re fairly similar. They all have quality ingredients and are suitable for vegans and vegetarians.

If you have specific needs then one may be slightly better than other options, but you can rest assured knowing that each of these supplements are high-quality potassium supplements.


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