THORNE - Potassium Citrate - Essential Electrolyte Supplement for Muscle Function, Heart…
- Potassium
- Capsule
- Potassium
- 90
- Better rated than 63%
- More reviewed than 73%
A single-ingredient, third-party certified potassium citrate capsule for people who specifically want that salt form rather than a broader electrolyte blend.
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How it ranks among the 93 potassium we track
4.7★ across 1,400 Amazon ratings, Bayesian-smoothed toward the category average.
1,400 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
3,000+ 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: 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
Thorne's Potassium Citrate is a third-party certified electrolyte capsule aimed at muscle function, heart health, nerve function and urinary tract support, sold in a 90-capsule, unflavored, gluten free bottle.
Potassium citrate is the specific salt form used here rather than potassium chloride, and citrate forms are typically the ones associated with urinary tract and kidney-related use. Thorne markets the product as third-party certified, which speaks to manufacturing verification rather than any effect on outcomes.
- Potassium citrate electrolyte formula
- 90 capsules
- Third-party certified
- Unflavored, gluten free
Who it's for
Suits someone whose electrolyte or urinary tract support routine calls specifically for potassium citrate rather than a generic multi-mineral blend. Not intended as a substitute for medical treatment of kidney stones or heart rhythm issues, both areas where potassium levels need clinician oversight.
Strengths and trade-offs
Drawn from this product's published specifications.
- Third-party certified manufacturing
- Potassium citrate salt form specifically
- Unflavored, gluten free capsule
- Single-mineral formula, not a broader electrolyte blend
- Capsule form only, no powder option
Performance notes
Citrate is the counter-ion Thorne uses here instead of chloride, a form more commonly tied to urinary tract and kidney-related supplementation, and the capsule is unflavored with a 90-count bottle for daily use.
Specifications
| Brand | THORNE |
|---|---|
| Model | M240 |
| Form | Capsule |
| Supplement Type | Potassium |
| Count | 90 |
| Flavor | Unflavored |
| Benefits | Nutritional Support, Skeletal Support |
| Diet | Gluten Free |
How it compares
This product against the closest alternatives we track in potassium.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| THORNE - Potassium Citrate - Essential Electrolyte Supplement for Muscle Function, Heart…This product | 4.7 / 5 | 1,400 | 4.5 / 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 THORNE M240
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What form of potassium is in Thorne's supplement?
Potassium citrate specifically, not potassium chloride.
How many capsules are in the bottle?
90 capsules.
Is Thorne Potassium Citrate third-party certified?
Yes, it's labeled third-party certified and gluten free.