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Potassium Aspartate

Swanson Premium Brand
4.7
★ ★ ★ ★ ★
(362 ratings)
Potassium 99 mg
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Score69
A simple low-dose capsule is undermined by missing chemical-form disclosure and limited practical potency.
How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:
Heart Health

Score 69

A simple low-dose capsule is undermined by missing chemical-form disclosure and limited practical potency.
How scoring works
$7.79($0.12 per serving)
iHerb
$ 7.79
iHerb
$ 7.79
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Analysis

The ingredient record lists 99 mg of potassium but does not identify its chemical form. Although the product name suggests aspartate, the supplied label data does not confirm that detail.

Potassium is relevant to fluid balance and normal blood-pressure physiology. The small amount and one-pathway design make the expected contribution limited.

A capsule is convenient for routine use, yet the disclosure gap weakens comparison with clearly specified citrate, gluconate, or chelated options. Users who care about form quality have better-documented choices in the same category.

Who is it for
  • Adults needing only a small potassium amount
  • People comfortable with limited form detail
Best for
  • Basic low-dose supplementation
  • Simple capsule routines

Pros

  • Clearly stated potassium amount
  • Focused single-mineral design
  • Convenient capsule format

Cons

  • Chemical form is not confirmed in the ingredient record
  • Very small contribution to daily needs
  • No complementary cardiovascular nutrients

Warnings

  • The 99 mg potassium serving may be unsuitable with impaired kidney function because potassium can accumulate.
  • ACE inhibitors, ARBs, and potassium-sparing diuretics can increase the risk of excessive blood potassium.
  • Taking potassium without enough fluid or food may cause stomach irritation in sensitive users.

Nutrient quality

62 Moderate impact

The ingredient record does not identify a potassium form despite the product name suggesting aspartate. The elemental amount is too small to contribute materially to daily needs, while the low amount avoids obvious excess in healthy adults.

Ingredient transparency

69 High impact

The amount is visible, but the chemical form is absent from the supplied ingredient record. Serving totals are apparent, but full directions and inactive ingredients are not supplied.

Customer satisfaction

68 High impact

The supplied average rating is strong. A substantial rating base gives the average reasonable reliability, while complaint and firsthand experience details are unavailable.

Value for money

78 High impact

Quality and disclosure gaps weaken the asking position. The serving value is mixed within the category.

Report analysis

Goals

Impact
Moderate effect
C Goal FitF Strength of SupportF CoverageA Formula Quality

Potassium supports sodium balance and normal blood-pressure physiology, but the 99 mg amount is very small. The product addresses one cardiovascular pathway without wider support.

The ingredient record does not identify the chemical form despite the product name suggesting aspartate. Low dose and form uncertainty limit practical value even though the formula is streamlined.

Study evidence
Potassium Supportive 182 studies

Ingredients

IngredientAmount per serving
Potassium
99 mg
Adults 18–50
Report overview
Potassium · 99 mg OverallScore28
F Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyD+ Value

The 99 mg potassium amount is low, and the ingredient record does not identify its chemical form despite the product name. The amount likely represents elemental potassium but does not include a compound weight. Very low serving cost provides fair value only for a small dose.

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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Potassium intake, stroke, and cardiovascular disease a meta-analysis of prospective studies.
    D'Elia L; Barba G; Cappuccio FP; Strazzullo P · Journal of the American College of Cardiology · 2011
    Meta-analysis247,510 participants11 studies pooledHeart Health forPotassium
  2. Oral potassium supplementation for management of essential hypertension: A meta-analysis of randomized controlled trials.
    Poorolajal J; Zeraati F; Soltanian AR; Sheikh V; Hooshmand E; Maleki A · PloS one · 2017
    Meta-analysis1,213 participants23 studies pooledHeart Health forPotassium
  3. Effect of Potassium Supplementation on Endothelial Function: A Systematic Review and Meta-Analysis of Intervention Studies.
    D'Elia L; Cappuccio FP; Masulli M; La Fata E; Rendina D; Galletti F · Nutrients · 2023
    Meta-analysis332 participants5 studies pooledHeart Health forPotassium
  4. Magnesium and Potassium Supplementation for Systolic Blood Pressure Reduction in the General Normotensive Population: A Systematic Review and Subgroup Meta-Analysis for Optimal Dosage and Treatment Length.
    Behers BJ; Behers BM; Stephenson-Moe CA; Vargas IA; Meng Z; Thompson AJ; Melchor J; Wojtas CN; Rosario MA; Baker JF; Deevers AC; Mouratidis RW; Sweeney MJ · Nutrients · 2024
    Meta-analysisHeart Health forPotassium
  5. Potassium intake and risk of stroke in women with hypertension and nonhypertension in the Women's Health Initiative.
    Seth A; Mossavar-Rahmani Y; Kamensky V; Silver B; Lakshminarayan K; Prentice R; Van Horn L; Wassertheil-Smoller S · Stroke · 2015
    Cohort study90,137 participantsHeart Health forPotassium
  6. Effect of high potassium diet on endothelial function.
    Blanch N; Clifton PM; Petersen KS; Willoughby SR; Keogh JB · Nutrition, metabolism, and cardiovascular diseases : NMCD · 2015
    Randomized trial35 participantsHeart Health forPotassium
  7. Associations between sodium, potassium, and blood pressure: results from the Hispanic Community Health Study/Study of Latinos, a prospective cohort study.
    Swift SL; Sotres-Alvarez D; Raij L; Wassertheil-Smoller S; Schneiderman N; Llabre M; Zeki Al Hazzouri A; Rundek T; Van Horn L; Daviglus M; Castaneda S; Youngblood M; Mossavar-Rahmani Y; Elfassy T · The American journal of clinical nutrition · 2024
    Cohort study11,429 participantsHeart Health forPotassium
  8. Serum potassium levels provide prognostic information in symptomatic heart failure beyond traditional clinical variables.
    Toledo CC; Vellosa Schwartzmann P; Miguel Silva L; da Silva Ferreira G; Bianchini Cardoso F; Citelli Ribeiro V; Paim LR; Antunes-Correa LM; Carvalho Sposito A; Matos Souza JR; Modolo R; Nadruz W; Fernandes de Carvalho LS; Coelho-Filho OR · ESC heart failure · 2021
    Cohort study178 participantsHeart Health forPotassium
  9. Long-Term Potassium Monitoring and Dynamics in Heart Failure and Risk of Mortality.
    Núñez J; Bayés-Genís A; Zannad F; Rossignol P; Núñez E; Bodí V; Miñana G; Santas E; Chorro FJ; Mollar A; Carratalá A; Navarro J; Górriz JL; Lupón J; Husser O; Metra M; Sanchis J · Circulation · 2019
    Cohort study2,164 participantsHeart Health forPotassium
  10. Finerenone, Serum Potassium, and Clinical Outcomes in Heart Failure With Mildly Reduced or Preserved Ejection Fraction.
    Vardeny O; Vaduganathan M; Claggett BL; Desai AS; Jhund PS; Lam CSP; Senni M; Shah SJ; Voors AA; Zannad F; Pitt B; Matsumoto S; Merkely B; Zieroth S; Yilmaz MB; Lay-Flurrie J; Viswanathan P; Horvat-Broecker A; Scalise A; McMurray JJV; Solomon SD · JAMA cardiology · 2025
    Randomized trial6,001 participantsHeart Health forPotassium
  11. Joint association of urinary sodium and potassium excretion with cardiovascular events and mortality: prospective cohort study.
    O'Donnell M; Mente A; Rangarajan S; McQueen MJ; O'Leary N; Yin L; Liu X; Swaminathan S; Khatib R; Rosengren A; Ferguson J; Smyth A; Lopez-Jaramillo P; Diaz R; Avezum A; Lanas F; Ismail N; Yusoff K; Dans A; Iqbal R; Szuba A; Mohammadifard N; Oguz A; Yusufali AH; Alhabib KF; Kruger IM; Yusuf R; Chifamba J; Yeates K; Dagenais G; Wielgosz A; Lear SA; Teo K; Yusuf S; PURE Investigators · BMJ (Clinical research ed.) · 2019
    Cohort study103,570 participantsHeart Health forPotassium
  12. Effects of potassium supplementation on office, home, and 24-h blood pressure in patients with essential hypertension.
    Kawano Y; Minami J; Takishita S; Omae T · American journal of hypertension · 1999
    Randomized trial55 participantsHeart Health forPotassium