Potassium Chloride vs. Potassium Bicarbonate
Among 3,345 on-market potassium products with an identifiable primary form, 36.8% use Potassium Chloride (1,232 products) and 9.9% use Potassium Bicarbonate (332).
| Potassium Chloride | Potassium Bicarbonate | |
|---|---|---|
| Quality tier | Tier 1 | Tier 1 |
| Potassium by weight | 52.4% | 39.1% |
| Share of market | 36.8% | 9.9% |
| On-market products | 1,232 | 332 |
| Median declared dose | 70 elemental mg middle half: 30–99 | 110 elemental mg middle half: 95–200 |
| Most common brands | NOW, DC, Vitamin World | Isotonix, Nuun, Pure Essence Ionic-Fizz |
Doses are declared per serving in elemental mg. “By weight” is the share of the ingredient that is the nutrient itself (e.g. elemental magnesium in a magnesium salt).
Why Potassium Chloride is tier 1
Standard reference form used in essentially all major clinical hypokalemia/blood-pressure trials.
Source: Whelton PK et al. 1997, JAMA 277(20):1624-32, PMID 9168293
Why Potassium Bicarbonate is tier 1
Used at doses shown to reduce urinary calcium excretion and bone-resorption markers in older adults, implying good systemic delivery (not a head-to-head absorption comparison).
Source: Sebastian A et al., PMID 18940881
Tiers summarize published comparative bioavailability or outcome evidence for each form (see methodology).
This page describes the market; it is not a recommendation to take either form. Talk to a clinician about what's right for you.
Other potassium comparisons
- Potassium Citrate vs. Potassium Chloride
- Potassium Citrate vs. Potassium Bicarbonate
- Potassium Citrate vs. Potassium Aspartate
- Potassium Citrate vs. Potassium Gluconate
- Potassium Chloride vs. Potassium Aspartate
- Potassium Chloride vs. Potassium Gluconate
- Potassium Bicarbonate vs. Potassium Aspartate
- Potassium Bicarbonate vs. Potassium Gluconate
- Potassium Aspartate vs. Potassium Gluconate