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Isopure Zero Carb Strawberries & Cream

Nature's Best
4.3
★ ★ ★ ★ ★
(7052 ratings)
Sodium 490 mg
Potassium 800 mg
Protein (unspecified) 50 Gram(s)
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Score65
Very concentrated protein and potassium come with a high sodium dose, incomplete form disclosure, and weak serving value.
How scoring works
Quantity:1 lb(s) • (7 servings)
Goals:
Heart Health

Score 65

Very concentrated protein and potassium come with a high sodium dose, incomplete form disclosure, and weak serving value.
How scoring works
$29.99($4.28 per serving)
Vitacost
$ 31.35
iHerb
$ 34.11
Amazon
$ 34.11
Vitacost
$ 29.99
iHerb
$ 34.11
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Analysis

A 50 g protein serving is unusually large and comes with only 0.5 g of fat and no listed carbohydrate. That can suit people who need concentrated protein, though many users could meet their needs with a smaller serving.

Potassium is substantial at 800 mg, while sodium is also high at 490 mg. The potassium form is not identified, and the sodium load works against the product as a simple choice for someone trying to improve dietary sodium balance.

The formula lists many vitamins and minerals but gives no usable amount for most of them, which limits evaluation beyond the core nutrition panel. It is most practical for high protein needs when the user has considered the large electrolyte dose and the limited number of servings.

Who is it for
  • People who need a very high-protein, very low-carbohydrate shake
  • Users whose diet can accommodate a large potassium and sodium serving
Best for
  • Concentrated protein intake
  • Low-fat and zero-carbohydrate macronutrient targets

Pros

  • Provides 50 g of protein
  • Contains only 0.5 g of fat and no listed carbohydrate
  • Supplies 800 mg of potassium

Cons

  • Contains 490 mg of sodium
  • Protein and mineral forms are not identified
  • Most listed micronutrients lack usable amounts
  • Provides relatively few servings

Warnings

  • The 800 mg potassium serving requires caution with impaired kidney function or potassium-raising medicines including ACE inhibitors, ARBs, and potassium-sparing diuretics.
  • The 490 mg sodium amount may not fit a sodium-restricted diet.

Nutrient quality

82 Highest impact

The very large protein amount and lean macronutrient profile fit concentrated protein use. Missing protein-source detail limits form assessment, while high potassium and moderate sodium deserve consideration for susceptible users.

Ingredient transparency

54 Moderate impact

The nutrition panel clearly states protein, macronutrient, sodium, and potassium amounts. The underlying protein ingredients, serving directions, and non-active ingredients are missing from the supplied details.

Customer satisfaction

62 Moderate impact

The supplied average rating is positive and is supported by very large review count. No detailed feedback is available to assess repeated complaints or purpose-specific experiences.

Value for money

61 Moderate impact

The concentrated protein amount supports formula quality. A very high qualitative serving cost and limited ingredient disclosure make value weak despite the large dose.

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Goals

Heart Health
Impact
Moderate effect
C Goal FitB- Strength of SupportD- CoverageC- Formula Quality
Vitamin K · NPMagnesium · NPVitamin B12 · NPVitamin B6 · NPFolate · NP

The high potassium amount provides a substantial contribution to sodium balance and vascular tone. Its chemical form is not disclosed, which limits confidence in absorption quality.

The formula remains primarily a high-protein food rather than a broad cardiovascular supplement. People with kidney disease or those using potassium-sparing diuretics need medical guidance because this amount can raise blood potassium further.

Study evidence
Potassium Supportive 182 studies

Ingredients

IngredientAmount per serving
Calories
210 Calorie(s)
Calories from Fat
5 Calorie(s)
Total Fat
0.5 Gram(s)
Cholesterol
20 mg
Sodium
490 mg
Potassium
800 mg
Total Carbohydrates
0 Gram(s)
Protein
50 Gram(s)
Vitamin A
0 NP
Vitamin C
0 NP
Calcium
0 NP
Iron
0 NP
Vitamin E
0 NP
Vitamin K
0 NP
Thiamine
0 NP
Riboflavin
0 NP
Niacin
0 NP
Vitamin B6
0 NP
Folic Acid
0 NP
Vitamin B12
0 NP
Biotin
0 NP
Pantothenic Acid
0 NP
Phosphorus
0 NP
Iodine
0 NP
Magnesium
0 NP
Zinc
0 NP
Selenium
0 NP
Copper
0 NP
Manganese
0 NP
Chromium
0 NP
Molybdenum
0 NP
Chloride
0 NP
Gluten Free Adults 18–50
Report overview
Sodium · 490 mg OverallScore71
D- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB- Value

The label does not identify the sodium source, which limits confidence in its quality. The sodium amount falls within the preferred range for athletic replenishment. Cost is high for sodium alone, but much of it reflects the product's protein content.

Potassium · 800 mg OverallScore45
F Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyD+ Value

The 800 mg potassium amount provides high-potency support, but the chemical form is not disclosed. A premium serving cost reduces potassium-focused value despite the large dose. People with kidney disease or those using potassium-sparing diuretics need medical guidance because this amount can raise potassium further.

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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. 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
  4. 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
  5. 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