Potassium Metabisulfite
- Potassium
- Powder
- Potassium
- 1
- Better rated than 63%
This is potassium metabisulfite, a sulfite compound used in winemaking and brewing, not a dietary potassium supplement despite how the category is labeled.
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How it ranks among the 93 potassium we track
4.7★ across 314 Amazon ratings, Bayesian-smoothed toward the category average.
314 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
100+ 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
Potassium metabisulfite sold as a 1 lb powder. Despite the supplement category listing, this compound is more commonly used as a sanitizing and preservative agent in home winemaking and brewing than as an ingestible potassium supplement.
The listing places this under Potassium supplements, but potassium metabisulfite is a sulfite compound better known to home winemakers and brewers as a sanitizer and preservative that releases sulfur dioxide, not a nutritional source of potassium meant for direct consumption. Buyers researching potassium as a dietary mineral should look elsewhere.
- 1 lb potassium metabisulfite powder
- Sulfite compound used in winemaking and brewing
- Not a nutritional potassium supplement
Who it's for
Fits home winemakers and brewers looking for a sulfite compound to sanitize equipment or preserve must and wine. Not a fit for anyone shopping this page expecting a potassium dietary supplement.
Strengths and trade-offs
Drawn from this product's published specifications.
- 1 lb quantity, a large supply for home use
- Powder form dissolves easily for sanitizing solutions
- Not intended as an ingestible potassium supplement despite the category placement
- No dosing or usage instructions given in the listing data
Performance notes
Potassium metabisulfite works by releasing sulfur dioxide gas when dissolved, which is what gives it sanitizing and antioxidant properties in winemaking, rather than any nutritional mechanism.
Specifications
| Brand | Potassium |
|---|---|
| Model | 4X-LBIR-PLL9 |
| Form | Powder |
| Supplement Type | Potassium |
| Count | 1 |
Other Potassium potassium
How it compares
This product against the closest alternatives we track in potassium.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Potassium MetabisulfiteThis product | 4.7 / 5 | 314 | 4.1 / 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 4X-LBIR-PLL9
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is potassium metabisulfite a dietary supplement?
No, despite being listed under Potassium supplements, it's a sulfite compound typically used for sanitizing and preserving in home winemaking and brewing, not for ingestion as a nutrient.
What size does it come in?
A 1 lb quantity of powder.
What is it commonly used for?
It's most commonly used by home winemakers and brewers as a sanitizer and preservative.