Potassium
Description
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.
Sources
BananasOrangesAvocadosSpinachPotatoes (especially sweet potatoes)TomatoesBeans (e.g., black beans, lentils)Dairy products (milk, yogurt)Meat and poultryFish (e.g., salmon, tuna)
Cheapest Potassium supplements
Best Potassium supplements
Value Potassium supplements
Timing & Intake
AnytimeWith food
Potassium supplements are generally best taken with food to minimize potential stomach upset.
Daily Intake
RDA (Men)4700 mg
RDA (Women)4700 mg
RDI4700 mg
Optimal Dosage
Minimum3000 mg
Maximum5000 mg
Safety & Toxicity
Toxicity Threshold18000 mg
Toxicity EffectCardiac arrhythmia, muscle weakness
Goals
Cardiovascular Support
Impact
Highest effect
Typical dose:99–495 mg
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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Energy
Impact
High effect
Typical dose:99–200 mg
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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Bone Health
Impact
Moderate effect
Typical dose:99–1000 mg
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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Muscle Gain
Impact
Moderate effect
Typical dose:99–400 mg
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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Fitness
Impact
Situational effect
Typical dose:99–400 mg
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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Interactions
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.
Recommended products
Optimal Electrolyte Lemonade
Seeking Health
Potassium: 510 mg
A high-quality electrolyte powder focusing on heart-supportive minerals and cellular energy.
Alkaline Minerals
pHion Balance
Potassium: 1260 mg
A potent, heart-healthy mineral powder that delivers high doses of bioavailable potassium and magnesium to support circulation.
1000 mg Vitamin C Tangerine
Emergen-C
Potassium: 200 mg
A high-potency tangerine mix delivering 1,000 mg of Vitamin C and 600 mg of heart-healthy potassium.
Dr. Strum's Intensive Bone Formula
Life Extension
Potassium: 1173 mg
A high-tier bone formula with potent Vitamin K2 and specialized botanicals for intensive structural support.
Keto Electrolyte Powder Lemon Lime Flavor
Trace Minerals
Potassium: 1000 mg
A high-potency keto electrolyte powder delivering 1,000mg of potassium for heart support.
Potassium Gluconate Pure Powder
NOW
Potassium: 175 mg
A well-tolerated potassium gluconate powder that offers clean mineral support with no extra fillers.
Potassium Chloride 365 mg
Nutricost
Potassium: 365 mg
A high-value liquid potassium chloride for reliable, long-term mineral balance.
1000 mg Vitamin C Raspberry
Emergen-C
Potassium: 200 mg
A high-potency Raspberry effervescent mix that excels at providing potassium and Vitamin C for heart and immune support.
Immune+ Super Orange
Emergen-C
Potassium: 200 mg
An enhanced effervescent drink mix that adds Vitamin D3 and zinc to a high-potassium formula for daily immune support.
Ultima Replenisher Lemonade
Ultima
Potassium: 250 mg
A high-quality lemonade electrolyte powder in a bulk size, providing bioavailable heart and muscle support.
Potassium Chloride Powder
NOW
Potassium: 365 mg
An extremely affordable and pure powder providing 365mg of potassium to support cardiovascular wellness and electrolytes.
Potassium Citrate
NOW
Potassium: 448 mg
A highly bioavailable liquid potassium supplement that provides a significant dose for supporting heart health and electrolyte balance.
Target-Mins Magnesium Potassium Aspartate With Other Target-Mins Chelates
Country Life
Potassium: 198 mg
A value-focused, high-potency mineral complex providing 600mg of magnesium and potassium support.
Ultima Replenisher Grape
Ultima
Potassium: 250 mg
A sugar-free grape electrolyte powder that provides potent potassium and magnesium for heart support.
Buffered Vitamin C Powder
Life Extension
Potassium: 365 mg
A highly potent, fully buffered 4,000 mg Vitamin C powder designed for maximal support and gastric comfort.
Potassium Bicarbonate 1.3 g
Nutricost
Potassium: 494 mg
A high-potency liquid potassium bicarbonate for superior heart and electrolyte support.
Target-Mins Magnesium Potassium Aspartate
Country Life
Potassium: 198 mg
A high-dose magnesium and potassium blend using varied organic salts to support muscle and heart health.
Potassium Bicarbonate 1.3 g
Nutricost
Potassium: 494 mg
A bulk-sized, high-potency liquid potassium bicarbonate for cardiovascular and pH support.
Product stats
Price per product
Average$45.58
Median$40.97
Price per serving
Average$1.43
Median$1.28
Price per 100 mg
Average$0.54
Median$0.49
Price distribution
Price per serving distribution
Price per 100 mg
Reference amount: 100 mg
Forms
Paired ingredients
Ingredient forms
Potassium Citrate (120)90
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.
Pros
- 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
Cons
- Can be more expensive than potassium chloride
- Still carries a risk of gastrointestinal discomfort (e.g., stomach upset, diarrhea) at high doses
Per product
Avg$36.43
Med$29.93
Per serving
Avg$1.11
Med$0.79
Per 10 mg
Avg$0.16
Med$0.11
Price distribution
Potassium Chloride (106)85
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.
Pros
- Highly bioavailable
- Cost-effective and widely available
- Effective for electrolyte repletion and general potassium supplementation
Cons
- 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
Per product
Avg$24.96
Med$20.89
Per serving
Avg$0.65
Med$0.58
Per 100 mg
Avg$0.64
Med$0.34
Price distribution
Potassium Bicarbonate (74)75
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.
Pros
- Provides potassium effectively
- Acts as an antacid, helping to neutralize stomach acid
- Supports the body's acid-base balance
Cons
- 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
Per product
Avg$24.30
Med$22.66
Per serving
Avg$0.64
Med$0.60
Per 100 mg
Avg$0.43
Med$0.26
Price distribution
Potassium Aspartate (46)80
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.
Pros
- 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
Cons
- 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
Per product
Avg$39.13
Med$27.73
Per serving
Avg$0.73
Med$0.62
Per 100 mg
Avg$0.73
Med$0.40
Price distribution
Potassium Phosphate (19)85
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.
Pros
- 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
Cons
- 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
Per product
Avg$32.25
Med$32.75
Per serving
Avg$0.73
Med$0.65
Per 100 mg
Avg$0.23
Med$0.20
Price distribution
Dipotassium Phosphate (16)85
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.
Pros
- Provides two essential minerals (potassium and phosphate)
- Useful in formulations requiring buffering or specific electrolyte balance
- Important for energy metabolism due to phosphate content
Cons
- 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
Per product
Avg$49.76
Med$49.98
Per serving
Avg$0.85
Med$0.80
Per 100 mg
Avg$0.80
Med$0.68
Price distribution
Potassium Carbonate (16)60
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.
Pros
- Provides potassium
- Strong buffering/alkalizing agent
Cons
- 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
Per product
Avg$18.42
Med$14.86
Per serving
Avg$0.59
Med$0.58
Per 100 mg
Avg$0.12
Med$0.10
Price distribution
Albion Calci-K Calcium Potassium Phosphate Citrate (11)95
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.
Pros
- 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
Cons
- 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
Per product
Avg$48.17
Med$49.99
Per serving
Avg$1.88
Med$1.66
Per 10 mg
Avg$0.24
Med$0.21
Price distribution