Potassium Magnesium Supplement
- Potassium
- Capsule
- Potassium
- 90
A simple way to get both minerals in one capsule if the fixed 400/400 mg split matches what you're aiming for.
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How it ranks among the 93 potassium we track
4.6★ across 237 Amazon ratings, Bayesian-smoothed toward the category average.
237 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
800+ bought on Amazon last month.
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: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This capsule supplement pairs 400 mg of potassium with 400 mg of magnesium in a single 90 count bottle, letting someone cover both electrolytes without buying two separate products. It ships unflavored since it is a swallowed capsule rather than a powder or chew.
Roughly 800 units sold in the past month per Amazon's demand data, so it is a reasonably active listing in the potassium magnesium category. The generic brand name on the listing (Potassium) suggests a house-label product rather than a recognized supplement company.
- 400 mg potassium plus 400 mg magnesium per serving
- 90 capsules per bottle
- Unflavored capsule form
- Marketed for heart, muscle, bone, sleep and mood support
Who it's for
Fits people wanting potassium and magnesium combined in one bottle for general electrolyte, muscle or sleep support. Not suited to anyone needing a different mineral ratio or additional electrolytes like sodium.
Strengths and trade-offs
Drawn from this product's published specifications.
- Combines potassium and magnesium in one capsule
- Unflavored, easy to swallow daily
- 90 count bottle for extended use
- No sodium or other electrolytes included
- No seller description to confirm sourcing
- Dosing schedule isn't spelled out on the listing
Performance notes
Capsule form means no taste to manage, and at one dose covering both minerals the 90 count bottle runs roughly three months if taken daily.
Specifications
| Brand | Potassium |
|---|---|
| Form | Capsule |
| Supplement Type | Potassium |
| Count | 90 |
| Flavor | Unflavored |
| Benefits | Electrolyte Balance |
Other Potassium potassium
How it compares
This product against the closest alternatives we track in potassium.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Potassium Magnesium SupplementThis product | 4.6 / 5 | 237 | 4.2 / 5 |
| NOW FOODS Potassium CitrateNow | 4.7 / 5 | 22,400 | 4.6 / 5 |
| Nature Made Potassium Gluconate 550 mgNATURE | 4.7 / 5 | 15,900 | 4.6 / 5 |
| Nutricost Potassium Citrate 99mgNutricost | 4.7 / 5 | 14,800 | 4.6 / 5 |
| NaturalSlim Natural Potassium Citrate Gluconate 99 mgNaturalSlim | 4.8 / 5 | 13,600 | 4.7 / 5 |
Similar potassium from other brands
Questions about the Potassium potassium
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How much potassium and magnesium does this supplement contain?
Each dose combines 400 mg of potassium with 400 mg of magnesium in capsule form.
Is the supplement flavored?
No, it's listed as unflavored since it's a capsule rather than a chewable or powder.
How many capsules come in one bottle?
90 capsules per bottle.