US
NATURE

Nature Made Potassium Gluconate 550 mg

  • Potassium
  • Tablet
  • Potassium
  • 100
4.7/ 5 on Amazon15,900Amazon ratings10,000+bought last month4.7ProductDome score
  • Better rated than 63%
  • More reviewed than 97%
High confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology
Best forYou want a preservative-free potassium tablet with dosing already mapped to 100 days

The same 550 mg potassium gluconate dose as Nature Made's other listing, framed as a 100-day, preservative-free supply for heart function support.

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ProductDome scorecard

How it ranks among the 93 potassium we track

4.7/ 5ProductDome scoreHigh confidence
Owner satisfaction · 56% of scorecategory median 4.6★4.7

4.7★ across 15,900 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 362 ratings5.0

15,900 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score5.0

10,000+ 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

This Nature Made Potassium Gluconate tablet also provides 550 mg per tablet in a 100-count bottle, marketed around heart function support and sold as a 100 day supply at one tablet daily. It adds preservative-free labeling alongside the gluten free claim.

The 100 Day Supply framing on the title spells out the intended one-tablet-per-day use directly, and the benefits field ties the formula to heart function rather than the pH balance angle used on Nature Made's other potassium gluconate listing. It's otherwise the same 550 mg tablet format.

  • 550 mg potassium gluconate per tablet
  • 100 tablets, marketed as a 100 day supply
  • Gluten free and preservative-free
  • Benefits labeled for heart function support

Who it's for

Suits someone who wants the daily dosing spelled out up front and prefers a preservative-free label on their potassium supplement.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out
  • 550 mg potassium per tablet, 100 day supply
  • Preservative-free and gluten free
What to check first
  • Tablet only, unflavored
  • Same core dose as other Nature Made potassium listings, so labeling is the main difference

Performance notes

One tablet a day covers the stated 100 day supply, delivering 550 mg potassium gluconate per dose; preservative-free labeling means no added preservatives in the tablet.

Specifications

BrandNATURE
Model1358
FormTablet
Supplement TypePotassium
Count100
FlavorUnflavored
BenefitsHeart Function
DietGluten Free
AllergensGluten Free, Preservative-Free

How it compares

This product against the closest alternatives we track in potassium.

ProductAmazon ratingRatingsProductDome score
Nature Made Potassium Gluconate 550 mgThis product4.7 / 515,9004.7 / 5
NOW FOODS Potassium CitrateNow4.7 / 522,4004.6 / 5
Nutricost Potassium Citrate 99mgNutricost4.7 / 514,8004.6 / 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 NATURE 1358

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

Is this Nature Made potassium supplement preservative-free?

Yes, it's labeled preservative-free in addition to gluten free.

How long does the bottle last?

It's marketed as a 100 day supply at one tablet per day.

What is the potassium dose per tablet?

550 mg of potassium gluconate.