Potassium
Potassium is one of the most abundant minerals in the body, acting as a vital electrolyte that works in conjunction with sodium and chloride to regulate fluid balance both inside and outside cells. This delicate balance is fundamental for various physiological processes, including nutrient transport, nerve signal transmission, and waste removal. Beyond fluid regulation, potassium is indispensable for proper nerve communication and muscle contraction. It facilitates the electrical impulses that allow muscles, including the heart, to function correctly. Adequate potassium intake is therefore critical for maintaining a regular heartbeat and supporting overall cardiovascular health. Furthermore, potassium contributes significantly to maintaining healthy blood pressure levels by counteracting the effects of sodium and promoting the excretion of excess sodium through urine. It also plays a role in bone health and may help reduce the risk of kidney stones. Maintaining optimal potassium levels is vital for preventing fatigue, muscle weakness, and more severe conditions.
BananasOrangesAvocadosSpinachPotatoes (especially sweet potatoes)TomatoesBeans (e.g., black beans, lentils)Dairy products (milk, yogurt)Meat and poultryFish (e.g., salmon, tuna)
Cheapest Potassium supplements
Discover the most affordable Potassium mineral supplements to support your Heart Health, Energy, Bone Health, Fitness, Cardiovascular Support, and Muscle Gain goals.
Best Potassium supplements
Discover the best potassium supplements to support your heart health, energy, bone strength, fitness, cardiovascular function, and muscle gain goals.
Value Potassium supplements
Compare the best potassium supplements to support your heart health, energy, and overall fitness goals.
RDA (Men)4700 mg
RDA (Women)4700 mg
RDI4700 mg
Minimum3000 mg
Maximum5000 mg
Toxicity Threshold18000 mg
Toxicity EffectCardiac arrhythmia, muscle weakness
Impact
Highest effect
Potassium's role in counteracting sodium and maintaining cellular electrical gradients is fundamental to cardiovascular health. Its direct and clinically proven impact on blood pressure and heart function justifies a top-tier, foundational priority, not a zero-level priority.
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Impact
High effect
Potassium works with sodium to maintain the electrochemical gradient across cell membranes, which is necessary for nerve impulses and muscle function. An imbalance or deficiency can lead to muscle weakness, cramping, and a general feeling of fatigue, especially after exertion or dehydration.
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Impact
Moderate effect
The role of potassium in mitigating acid load to spare skeletal calcium is a well-supported mechanism for preserving bone mineral density. A priority of 0 is inappropriate. A priority of 68 correctly positions it as an important supportive mineral.
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Impact
Moderate effect
As a key electrolyte, potassium is critical for nerve impulse transmission and muscle function. Sweat loss during intense exercise can deplete levels, impairing performance and recovery. Ensuring adequate intake prevents it from becoming a limiting factor in training quality.
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Impact
Situational effect
Potassium is lost through sweat alongside sodium and is critical for maintaining cellular fluid balance and proper nerve signaling to muscles. Ensuring adequate intake helps prevent cramping and supports overall cardiovascular function during exercise.
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add_circle_outline Positive Interactions
Magnesium
Both are crucial electrolytes that work synergistically to maintain proper nerve, muscle, and heart function, as well as overall fluid balance.
Sodium
Potassium helps to balance sodium levels in the body, which is critical for maintaining healthy blood pressure and fluid balance. Increased potassium intake can help mitigate the effects of high sodium.
Chloride
Potassium and Chloride often work together as electrolytes (e.g., potassium chloride) to maintain fluid and electrolyte balance, especially outside the cells.
Calcium
Both potassium and calcium are vital minerals involved in muscle contraction and nerve signal transmission. Maintaining a proper balance of these electrolytes is important for optimal physiological function.
82 Best 
Serious Mass Chocolate Peanut Butter
Optimum Nutrition
4.5
★★★★★
(43047 ratings)
Potassium: 1100 mg
This chocolate peanut butter flavored product is a calorie-dense powder, offering high carbohydrates, protein, essential vitamins, and key muscle support ingredients like creatine and glutamine, designed for those focused on gaining weight and muscle mass.
80 Budget 
Multi-Source Potassium
Sundown
4.3
★★★★★
(17 ratings)
Potassium: 99 mg
This supplement provides 99mg of potassium from a blend of six different potassium forms, designed for comprehensive electrolyte support for heart health, energy, and muscle function, at a very budget-friendly price.
65 Value 
Potassium Gluconate
Nature Made
4.6
★★★★★
(1773 ratings)
Potassium: 90 mg
This affordable tablet delivers 90mg of gentle potassium gluconate per serving, a convenient option for daily potassium support.
65 Best 
GlycoLoad Blue Raspberry
Metabolic Nutrition
4.9
★★★★★
(16 ratings)
Potassium: 900 mg
GlycoLoad Blue Raspberry is a carbohydrate-rich supplement with added electrolytes and B vitamins, aimed at supporting energy replenishment and muscle recovery after exercise.
80 Value 
Potassium Bicarbonate 1.3 g
Nutricost
4.7
★★★★★
(308 ratings)
Potassium: 494 mg
This liquid supplement provides a high 494mg of potassium bicarbonate per serving, offering exceptional value and flexible dosing for robust potassium support.
82 Best 
Serious Mass Strawberry
Optimum Nutrition
4.5
★★★★★
(43043 ratings)
Potassium: 880 mg
This strawberry-flavored product is a calorie-dense powder, offering high carbohydrates, protein, essential vitamins, and key muscle support ingredients like creatine and glutamine, designed for those focused on gaining weight and muscle mass.
78 Best 
Weight Loss Drink Mix French Vanilla
Natural Factors SlimStyles
4.5
★★★★★
(132 ratings)
Potassium: 870 mg
This is a comprehensive meal replacement shake with high protein, PGX fiber for satiety, and a wide range of vitamins and minerals, designed to support weight management as part of a controlled diet.
70 Value 
Complete Multivitamin Adults 50+
Equate
4.7
★★★★★
(2059 ratings)
Potassium: 80 mg
This multivitamin for adults 50+ offers a foundational blend of essential vitamins, minerals, and key carotenoids like Lutein and Lycopene, supporting general health, bone density, and vision at a very accessible price.
70 Value 
Sentry Adults
21st Century
4.7
★★★★★
(25128 ratings)
Potassium: 80 mg
A very affordable and broad-spectrum daily multivitamin and multimineral for adults, offering foundational nutritional support for overall well-being.
82 Best 
Serious Mass Chocolate
Optimum Nutrition
4.5
★★★★★
(45297 ratings)
Potassium: 1430 mg
This chocolate-flavored product is a calorie-dense powder, offering high carbohydrates, protein, essential vitamins, and key muscle support ingredients like creatine and glutamine, designed for those focused on gaining weight and muscle mass.
65 Best 
GlycoLoad Green Apple
Metabolic Nutrition
4.7
★★★★★
(32 ratings)
Potassium: 900 mg
GlycoLoad Green Apple is a carbohydrate-rich supplement with added electrolytes and B vitamins, aimed at supporting energy replenishment and muscle recovery after exercise.
88 Value 
Potassium Citrate
NOW
4.8
★★★★★
(9893 ratings)
Potassium: 448 mg
This liquid potassium citrate supplement offers a high 448 mg dose per serving, ideal for those needing increased potassium or preferring a liquid form.
78 Value 
Potassium Chloride Powder
NOW
4.7
★★★★★
(3167 ratings)
Potassium: 365 mg
A cost-effective potassium chloride powder delivering 365 mg of potassium per serving, suitable for those needing a higher dose.
78 Value 
Potassium Plus Iodine
NOW
4.8
★★★★★
(7836 ratings)
Potassium: 99 mg
This supplement combines elemental potassium and iodine in a convenient tablet form, aiming to support general metabolic function and electrolyte balance.
68 Value 
Potassium Gluconate 99 mg
NOW
4.7
★★★★★
(1650 ratings)
Potassium: 99 mg
A basic and affordable 99 mg potassium gluconate tablet, suitable for daily potassium maintenance.
82 Value 
Potassium Gluconate Pure Powder
NOW
4.7
★★★★★
(1141 ratings)
Potassium: 175 mg
A versatile potassium gluconate pure powder providing 175 mg of potassium per serving, perfect for customizable dosing and bulk needs.
92 Value 
Potassium Chloride 365 mg
Nutricost
4.7
★★★★★
(253 ratings)
Potassium: 365 mg
An extremely economical, high-dose liquid potassium chloride supplement, providing 365mg elemental potassium for robust mineral support.
82 Best 
Serious Mass Vanilla
Optimum Nutrition
4.5
★★★★★
(1190 ratings)
Potassium: 950 mg
This vanilla-flavored product is a calorie-dense powder, offering high carbohydrates, protein, essential vitamins, and key muscle support ingredients like creatine and glutamine, designed for those focused on gaining weight and muscle mass.
88 Best 
Keto Electrolyte Powder Lemon Lime Flavor
Trace Minerals
4.7
★★★★★
(2995 ratings)
Potassium: 1000 mg
A high-potassium electrolyte powder for ketogenic diets and active lifestyles, providing essential minerals in a convenient, cost-effective form.
78 Best 
Alkaline Minerals
pHion Balance
4.4
★★★★★
(257 ratings)
Potassium: 1260 mg
This mineral powder offers a substantial blend of essential minerals, including calcium, magnesium, potassium, and phosphorus, which can support overall wellness and key bodily systems.
62 Budget 
Tri-Salts
Ecological Formulas
4.6
★★★★★
(225 ratings)
Potassium: 99 mg
Ecological Formulas Tri-Salts is an economical powder supplement providing calcium, magnesium, and potassium primarily in carbonate and bicarbonate forms, offering basic mineral support with versatile dosing.
87 Best 
Keto Collagen MCT Powder Unflavored
Terra Origin
4.9
★★★★★
(52 ratings)
Potassium: 900 mg
Terra Origin's Keto Collagen MCT Powder is a targeted supplement for ketogenic diets, offering 10g of bovine collagen for connective tissue, 4g of fat (likely MCTs) for energy, and an impressive 900mg of potassium. It excels in supporting joint health and electrolyte balance for keto users, despite collagen being an incomplete protein for muscle gain. This product is transparent and highly effective for its specific niche.
Average$38.57
Median$33.98
Average$1.23
Median$1.06
Average$1.00
Median$0.68
Reference amount: 100 mg
Potassium citrate is a potassium salt derived from citric acid. It is highly bioavailable and particularly known for its ability to alkalinize urine, making it a common treatment for preventing the formation of certain types of kidney stones (e.g., calcium oxalate and uric acid stones). It also serves as an effective general potassium supplement.
- Highly bioavailable and generally well-tolerated
- Effective in preventing and treating certain kidney stones due to urinary alkalizing properties
- May be less irritating to the stomach for some individuals compared to potassium chloride
- Can be more expensive than potassium chloride
- Still carries a risk of gastrointestinal discomfort (e.g., stomach upset, diarrhea) at high doses
Avg$36.43
Med$29.93
Avg$1.11
Med$0.79
Avg$0.16
Med$0.11
Price distribution
Potassium chloride is a mineral salt composed of potassium and chloride, both essential electrolytes. It is widely utilized to supplement potassium levels in the body and is a common ingredient in salt substitutes. It plays a critical role in maintaining fluid balance, nerve signal transmission, and muscle contractions, including those of the heart.
- Highly bioavailable
- Cost-effective and widely available
- Effective for electrolyte repletion and general potassium supplementation
- Can have a salty or metallic taste
- Potential for gastrointestinal upset (nausea, diarrhea) at higher doses
- High chloride intake might be a concern for some individuals
Avg$24.96
Med$20.89
Avg$0.65
Med$0.58
Avg$0.64
Med$0.34
Price distribution
Potassium bicarbonate is a compound that combines potassium with bicarbonate. It serves as an effective source of potassium and also possesses strong alkalizing properties, making it useful in neutralizing stomach acid and correcting metabolic acidosis. It contributes to the body's acid-base balance.
- Provides potassium effectively
- Acts as an antacid, helping to neutralize stomach acid
- Supports the body's acid-base balance
- Can cause gastrointestinal discomfort such as bloating, gas, or belching due to the release of carbon dioxide in the stomach
- Less commonly used for general potassium supplementation compared to chloride or citrate forms
Avg$24.30
Med$22.66
Avg$0.64
Med$0.60
Avg$0.43
Med$0.26
Price distribution
Potassium aspartate is a compound where potassium is chelated or bound to aspartic acid, a non-essential amino acid. This chelated form is often promoted for potentially enhanced absorption and bioavailability compared to simpler salt forms. Aspartate itself plays a role in the body's energy metabolism.
- May offer enhanced absorption and bioavailability due to the chelated form
- Aspartate component might offer additional metabolic support
- Generally well-tolerated by the gastrointestinal system
- Typically more expensive than conventional potassium forms (e.g., chloride, citrate)
- The extent of 'enhanced absorption' benefits can be a subject of scientific debate
- Less extensively studied for broad applications compared to more common potassium salts
Avg$39.13
Med$27.73
Avg$0.73
Med$0.62
Avg$0.73
Med$0.40
Price distribution
Potassium phosphate is a compound that simultaneously delivers both potassium and phosphate ions. Both minerals are critical electrolytes; potassium is vital for nerve and muscle function, while phosphate is crucial for energy storage (ATP), bone health, DNA synthesis, and cell membrane integrity. It's often used when deficiencies in both minerals are present.
- Replenishes two essential minerals (potassium and phosphate) simultaneously
- Crucial for energy metabolism and bone health due to phosphate content
- Effective in addressing specific deficiencies involving both minerals
- Phosphate content needs careful consideration, as excessive intake can lead to hyperphosphatemia, particularly in vulnerable individuals
- Less common for general potassium supplementation unless phosphate repletion is also required
- Can cause gastrointestinal side effects such as diarrhea if taken in high doses
Avg$32.25
Med$32.75
Avg$0.73
Med$0.65
Avg$0.23
Med$0.20
Price distribution
Dipotassium phosphate is a potassium salt of phosphoric acid, supplying both potassium and phosphate ions. It is frequently used as a food additive (e.g., emulsifier, buffer, stabilizer) and as an electrolyte supplement, particularly in sports drinks or formulations where both minerals are desired for their roles in energy metabolism, muscle function, and bone health.
- Provides two essential minerals (potassium and phosphate)
- Useful in formulations requiring buffering or specific electrolyte balance
- Important for energy metabolism due to phosphate content
- Similar concerns as potassium phosphate regarding high phosphate intake, especially for individuals with kidney issues
- Can cause gastrointestinal upset, such as diarrhea, if consumed in high doses
Avg$49.76
Med$49.98
Avg$0.85
Med$0.80
Avg$0.80
Med$0.68
Price distribution
Potassium carbonate is a salt of potassium and carbonate, possessing strong alkaline properties. While it provides potassium, it is primarily used in industrial applications, food processing (e.g., as a leavening agent or drying agent), and for its buffering capacity. It is generally not recommended for direct human dietary supplementation due to its caustic nature and potential for significant gastrointestinal irritation.
- Provides potassium
- Strong buffering/alkalizing agent
- Can cause significant gastrointestinal distress, including irritation, bloating, gas, and belching, due to its strong alkaline nature
- Not a common or recommended form for direct oral human supplementation due to poor tolerability
- Potential for caustic effects on mucous membranes at higher concentrations
Avg$18.42
Med$14.86
Avg$0.59
Med$0.58
Avg$0.12
Med$0.10
Price distribution
Albion Calci-K is a unique, patented multi-mineral complex developed by Albion Minerals, renowned for producing highly bioavailable chelated minerals. This form delivers three essential minerals—calcium, potassium, and phosphate—in a citrate complex. This specific chelation is designed to optimize the absorption and utilization of all three minerals simultaneously, primarily targeting bone health, electrolyte balance, and overall cellular function.
- Provides three vital minerals (calcium, potassium, phosphate) in one complex
- High bioavailability due to the advanced citrate chelation by Albion Minerals
- Optimized for bone health and comprehensive electrolyte support
- Reduced potential for gastrointestinal irritation compared to some individual mineral salts
- Significantly more expensive than individual mineral supplements
- Dosages of each individual mineral may not be ideal for all specific deficiencies or needs
- Less common in general supplements due to its specialized nature
Avg$48.17
Med$49.99
Avg$1.88
Med$1.66
Avg$0.24
Med$0.21
Price distribution