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Glucosamine Sulfate 750 mg

Doctor's Best
4.7
★ ★ ★ ★ ★
(7820 ratings)
Chloride 172 mg
Potassium 190 mg
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Score85
A transparent, good-value glucosamine formula for joints, but not a meaningful heart-health product.
How scoring works
Quantity:180 Capsule(s) • (90 servings)
Goals:

Score 85

A transparent, good-value glucosamine formula for joints, but not a meaningful heart-health product.
How scoring works
$14.99($0.16 per serving)
iHerb
$ 14.99
Pure Formulas
$ 24.52
Vitacost
$ 16.47
iHerb
$ 14.99
Amazon
$ 14.99
Vitacost
$ 16.47
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Analysis

The daily amount supplies 1,500 mg glucosamine sulfate potassium chloride, a focused amount for joint-support routines. The label clearly states the associated potassium and chloride contributions.

The simple formula avoids a long proprietary blend and makes its purpose easy to understand. Its narrow ingredient list may be preferable for people who do not want multiple joint botanicals.

Heart-health shoppers should not mistake the potassium content for a cardiovascular formula. The product's real strengths are joint focus, transparent dosing, and favorable routine value.

Who is it for
  • Adults seeking simple glucosamine support
  • People who prefer a focused joint formula
Best for
  • Joint-support routines
  • Clearly dosed glucosamine
  • Value-focused long-term use

Pros

  • Provides 1,500 mg glucosamine sulfate
  • Simple and transparent formula
  • Strong routine value

Cons

  • Does not address the stated heart goal
  • Offers only one main joint ingredient
  • Requires multiple capsules for the full serving

Warnings

  • Glucosamine may affect blood sugar control in some people using diabetes medicines.
  • People with shellfish allergy should verify the glucosamine source because it is not stated in the supplied details.

Nutrient quality

92 Highest impact

Glucosamine sulfate reaches a meaningful amount and closely fits joint-support use. The formula is focused, although its listed potassium and chloride mainly come from the stabilizing salt.

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Ingredient transparency

78 High impact

The core glucosamine and associated mineral amounts are individually stated without a hidden blend. Source material, directions, and inactive capsule ingredients are not supplied.

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Customer satisfaction

72 High impact

The aggregate rating indicates strong customer satisfaction. Substantial feedback volume supports the aggregate, but no review details are available.

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Value for money

95 Highest impact

A meaningful dose, simple formula, and low serving cost create strong value. Missing source and excipient detail are the main limitations.

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Ingredients

IngredientAmount per serving
Chloride (Glucosamine Sulfate 2KCl)
 172 mg
Potassium (Glucosamine Sulfate Potassium Chloride)
 190 mg
Glucosamine Sulfate Potassium Chloride
1500 mg
Gluten Free Adults 18–50
Report overview
Chloride (Glucosamine Sulfate 2KCl) · 172 mg OverallScore85
B- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyA+ Value

Potassium chloride within the glucosamine salt supplies a meaningful chloride amount in a soluble form. The capsule format is less immediately available than a dissolved electrolyte product, but the source and dose are clearly disclosed. A low per-serving cost makes the chloride contribution highly economical, although the formula is primarily intended to provide glucosamine.

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Potassium (Glucosamine Sulfate Potassium Chloride) · 190 mg OverallScore58
D+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyC+ Value

Potassium is provided through glucosamine sulfate potassium chloride, a usable electrolyte source without the preferred buffering properties of organic potassium forms. The amount is moderate but remains below the collection benchmark for an effective potassium serving. A very low serving cost improves value, though the formula is primarily a glucosamine supplement rather than a dedicated potassium option.

View ingredientView products
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87 Performance

Potassium Bicarbonate 1.3 g

Nutricost
<p>Its label clearly provides 494 mg of Potassium as Potassium Bicarbonate, making it a more clearly defined potassium option. Compared with the original, its ingredient and goal alignment is stronger, although it does not retain the original product’s chloride coverage.</p>
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Potassium Citrate

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<p>Its label clearly provides 448 mg of Potassium as Potassium Citrate, making it a more clearly defined potassium option. Compared with the original, its ingredient and goal alignment is stronger, although it does not retain the original product’s chloride coverage.</p>
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<p>Its label clearly provides 600 mg of Magnesium as Magnesium Alpha-Ketoglutarate, making it a more clearly defined potassium option. Compared with the original, its ingredient and goal alignment is stronger, although it does not retain the original product’s chloride coverage.</p>
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Potassium Gluconate Pure Powder

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<p>Its label clearly provides 175 mg of Potassium as Potassium Gluconate, preserving relevant potassium coverage. Compared with the original, it lowers the serving cost, although it does not retain the original product’s chloride coverage.</p>
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Potassium Chloride 365 mg

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<p>Its label clearly provides 365 mg of Potassium as Potassium Chloride, preserving relevant potassium coverage. Compared with the original, it lowers the serving cost, although it does not retain the original product’s chloride coverage.</p>
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Potassium 99 mg

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<p>Its label clearly provides 99 mg of Potassium as Potassium Amino Acid Complex, preserving relevant potassium coverage. Compared with the original, it lowers the serving cost, although it does not retain the original product’s chloride coverage.</p>
87 Value

Potassium Bicarbonate 1.3 g

Nutricost
<p>Its label clearly provides 494 mg of Potassium as Potassium Bicarbonate, keeping the formula relevant to potassium. Compared with the original, the lower serving cost and ingredient detail create a useful quality-to-cost balance, although it does not retain the original product’s chloride coverage.</p>
81 Value

Potassium (Citrate)

Pure Encapsulations
<p>Its label clearly provides 200 mg of Potassium as Potassium Citrate, keeping the formula relevant to potassium. Compared with the original, the somewhat higher serving cost and ingredient detail create a useful quality-to-cost balance, although it does not retain the original product’s chloride coverage.</p>
81 Value

Potassium Chloride Powder

NOW
<p>Its label clearly provides 365 mg of Potassium as Potassium Chloride, keeping the formula relevant to potassium. Compared with the original, the lower serving cost and ingredient detail create a useful quality-to-cost balance, although it does not retain the original product’s chloride coverage.</p>
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Sources

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

  1. 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
  2. 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
  3. 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
  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