US
Nutricost

Nutricost Potassium

  • Potassium
  • Capsule
  • Magnesium, Potassium
  • 240
4.6/ 5 on Amazon3,500Amazon ratings3,000+bought last month4.5ProductDome score
  • More reviewed than 85%
High confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology
Best forYou want potassium and magnesium combined in one capsule for daily maintenance

A straightforward two-mineral citrate capsule with a large 240-count bottle, suited to general mineral support rather than treating a diagnosed deficiency.

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ProductDome scorecard

How it ranks among the 93 potassium we track

4.5/ 5ProductDome scoreHigh confidence
Owner satisfaction · 56% of scorecategory median 4.6★4.6

4.6★ across 3,500 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 362 ratings4.4

3,500 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score4.7

3,000+ bought on Amazon last month.

Data quality · 11% of score3.8

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 93 potassium we track - how the scorecard works · full potassium data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

Each capsule combines 99 mg of potassium with 210 mg of magnesium in citrate form, a combination often used together since both minerals support similar functions. The bottle holds 240 capsules and the formula is unflavored, non-GMO, and gluten free.

Potassium and magnesium citrate are paired here rather than sold as single-mineral products, useful for anyone tracking both intakes without buying two bottles. The 99 mg potassium dose is intentionally modest and sits below FDA labeling thresholds that apply to higher-dose potassium products, so this reads as a maintenance-level amount rather than a therapeutic one.

  • 99 mg potassium, 210 mg magnesium per capsule
  • 240 capsules per bottle
  • Citrate mineral form
  • Non-GMO, gluten free

Who it's for

Fits people who want a combined electrolyte-style supplement for routine mineral intake, such as those on low-sodium diets or with moderate activity levels. Not a substitute for a doctor-directed higher-dose potassium regimen if a real deficiency has been diagnosed.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out
  • Combines potassium and magnesium in one capsule
  • Citrate forms for general absorption
  • Large 240 count bottle
  • Non-GMO and gluten free
What to check first
  • Potassium dose is low per capsule
  • Unflavored capsule offers no taste cues

Performance notes

Citrate forms of potassium and magnesium are generally well absorbed and are a common choice for daily supplementation. Because the potassium dose is capped at 99 mg per capsule, multiple capsules would be needed to reach amounts used therapeutically, so check the label against any specific target a doctor has set.

Specifications

BrandNutricost
ModelNTC-20200
FormCapsule
Supplement TypeMagnesium, Potassium
Count240
FlavorUnflavored
BenefitsGluten Free
DietGluten Free
AllergensNon-GMO

How it compares

This product against the closest alternatives we track in potassium.

ProductAmazon ratingRatingsProductDome score
Nutricost PotassiumThis product4.6 / 53,5004.5 / 5
NOW FOODS Potassium CitrateNow4.7 / 522,4004.6 / 5
Nature Made Potassium Gluconate 550 mgNATURE4.7 / 515,9004.6 / 5
NaturalSlim Natural Potassium Citrate Gluconate 99 mgNaturalSlim4.8 / 513,6004.7 / 5
ARG Optimox Iodoral 12.5 mgARG4.7 / 57,0004.6 / 5
Frequently asked

Questions about the Nutricost NTC-20200

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

How much potassium is in each Nutricost NTC-20200 capsule?

99 mg of potassium alongside 210 mg of magnesium, both in citrate form.

Is the Nutricost NTC-20200 gluten free?

Yes, it is labeled gluten free and non-GMO.

How many capsules come in the NTC-20200 bottle?

240 capsules.