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Updated: 08 Oct 2025

10 Best Potassium Supplements

#1
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Best Naturals Potassium Iodide 65 mg - Dietary Supplement, 60 Tablets

Brand: Best Naturals
$19.99
⭐ 4.7
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    For Short Term Use
  • Make a Great Addition to Survival Kits.
  • Serving Size: 1 Tablet - 60 Servings Per Container
  • No Articial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fish
  • Made in the USA - All Best Naturals products are manufactured in accordance with Good Manufacturing Practices (GMP), among the highest standards in the world
  • Expiration Date: February 2025
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#2
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400g Potassium Chloride Powder - Pure E508 Food Grade Salt Substitute Supplement

Brand: Orku
$28.95
⭐ 4.2
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    Pure Potassium Chloride (KCL) E508 is a food grade powder ideal for potassium enrichment and sodium reduction in foods.
  • Comes in a convenient 400g resealable bucket tub to maintain freshness and ease of use.
  • Versatile uses include functioning as a flavouring agent, nutrient supplement, pH control agent, stabiliser, thickening promoter, and even an alternative to chlorine in pools.
  • High purity with 99.3% Potassium Chloride on dry basis ensures quality performance across various applications.
  • Contains anti-caking agent Na4Fe(CN)6 for easy handling without clumping or moisture issues.
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#3
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Puregen Labs Potassium Bicarbonate Supplement 1020 mg | Non-GMO | Gluten Free | Made in USA | 240 Vegetarian Capsules

Brand: P Puregen Labs
$50.14
⭐ 4.7
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    POTASSIUM BICARBONATE: Potassium is one of the most important minerals in the body and most of us are not getting adequate amounts in our diets. Taking Potassium supplements is a good way to insure adequate potassium levels in the blood.
  • POWERFUL FORMULA: Each serving of Puregen Labs Potassium supplement contains 1020 mg of Potassium (as potassium bicarbonate) in easy-to-swallow vegetarian capsules. Each one of our potassium bicarbonate pills contains 510 mg of this essential nutrient for potent and powerful support.
  • DIRECTIONS: Take this medicine exactly as directed by your doctor. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered.
  • Precautions: Potassium Bicarbonate may interact with some of the medications. Please contact you doctor before taking Potassium supplements.
  • MADE IN THE USA: Our formula is Vegetarian Friendly, ALLERGEN-FREE, GLUTEN-FREE, and made in a facility following strict GMP guidelines to ensure safety and quality.
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#4
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Life Extension Potassium With Extend-release Magnesium, 60 Count

Brand: Life Extension
$31.00 ($0.52 / coun
⭐ 4.7
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    Magnesium supports healthy circulation
  • Help maintain cardiovascular health
  • Powerful blood pressure support
  • Dates on US products may be displayed as MM/DD/YYYY
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#5
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Best Naturals Calcium Magnesium Potassium - 120 Tablets - Non-GMO & Gluten Free

Brand: Best Naturals
$24.99
⭐ 4.1
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    3rd Party Lab Tested for Purity & Quality
  • Contains 500 mg of Calcium, 500 mg of Magnesium, and 99 mg of Potassium per serving - 60 Servings - 120 Tablets
  • Non-GMO & Gluten-Free.
  • Proudly Made in USA, GMP Compliant, FDA Registered Facility.
  • No Artificial Color, Flavor, or Sweetener, No Preservatives, No Sugar, No Milk, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fish.
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#6
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NOW Supplements, Potassium Citrate Powder, 12-Ounce

Brand: NOW
$29.52 ($8.68 / 100
⭐ 4.1
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    Pure Powder
  • Supports Electrolyte Balance and Normal pH*
  • Proper Muscular Contraction*
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968
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#7
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Best Naturals Potassium Citrate 99mg 500 Tablets

Brand: Best Naturals
$23.99
⭐ 4.6
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    PREMIUM FORMULA - Our Potassium Tablets are the made with high quality Potassium Citrate
  • 3rd Part Lab Tested - Our All Best Naturals Products come with 3rd Party Independent Lab Tested
  • Potassium supplement is necessary for supporting electrolyte mineral balance & Our potassium promotes muscle activity & nerve transmission
  • No Articial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fish
  • All Best Naturals products are manufactured in accordance with Good Manufacturing Practices (GMP), among the highest standards in the world - Proudly Made in the USA
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#8
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Potassium Citrate Capsules 275 mg | 400 Count | Non-GMO, Gluten Free Supplement | by Horbaach

Brand: HorbÀach
$36.60
⭐ 4.7
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    ESSENTIAL NUTRIENTS: Horbaach's Potassium Citrate is an innovative form of this essential nutrient
  • MAXIMUM ABSORPTION: One Quick-Release capsule delivers 275 mg of Potassium Citrate
  • ADVANCED FORMULA: Our experty crafted supplement provides a highly bioavailable form of Potassium!
  • HORBAACH MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
  • NATURALLY FREE OF: Gluten, Wheat, Yeast, Milk, Lactose, Soy, Artificial Color & Flavoring & NON-GMO
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#9
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Best Naturals Potassium Chloride Supplement 99mg 400 Tablets - 3rd Party Lab Tested

Brand: Best Naturals
$19.99
⭐ 4.2
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    PREMIUM FORMULA - Our Potassium Tablets are the made with high quality Potassium Chloride
  • 3rd Part Lab Tested - Our All Best Naturals Products come with 3rd Party Independent Lab Tested
  • Potassium supplement is necessary for supporting electrolyte mineral balance & Our potassium promotes muscle activity & nerve transmission
  • No Articial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fish
  • All Best Naturals products are manufactured in accordance with Good Manufacturing Practices (GMP), among the highest standards in the world - Proudly Made in the USA
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#10
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Best Naturals Potassium Gluconate Supplement 595 Mg Tablet, 250 Count

Brand: Best Naturals
$19.99 ($0.08 / coun
⭐ 4.6
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    Potassium supplement is neccesary for supporting electrolyte mineral balance
  • Our Postassium gluconate 595mg provides 99 mg of active potassium mineral
  • Our potassium promotes muscle activity & nerve transmission
  • No Articial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fish, No Sodium.
  • Top QUALITY GMP CERTIFIED PRODUCTS - All Best Naturals products are manufactured in accordance with Good Manufacturing Practices (GMP), among the highest standards in the world -- Proudly Made in USA -- Purity & Potency Guaranteed
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