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Potassium

Guides and comparisons Multivitamins: how to compare daily vitamin & mineral formulas

Potassium on this shelf comes as capsules and tablets and as pure powders, in different salts: citrate, chloride, gluconate, orotate and aspartate. A label gives the amount of potassium itself per serving, which is not the same as the weight of the salt, so compare that line and the serving size rather than the product name. A strength in a product name can describe a serving of several capsules, and a powder serving is a spoon measure with an approximate weight. The table below prices three potassium powders per 1 g of declared potassium; it is a unit price for comparing labels, not a dose.

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Portion prices are calculated from the net contents. Portion sizes differ between products; this is not a dosing recommendation. Read the full ingredients and directions on the product label.

Price per 1 g potassium = portion price ÷ declared potassium per portion (mg) × 1,000. The declared potassium is the mineral itself, not the weight of the salt.

Potassium Citrate, Pure Powder - 340 grams NOW Foods Potassium Citrate, Pure Powder - 340 grams Potassium Chloride Powder - 227 grams NOW Foods Potassium Chloride Powder - 227 grams Potassium Gluconate, Pure Powder - 454 grams NOW Foods Potassium Gluconate, Pure Powder - 454 grams Potassium, 300mg - 90 vegan caps Osavi Potassium, 300mg - 90 vegan caps
Pack size 340 g 227 g 454 g 90 capsules
Main ingredients Potassium citrate powder Potassium chloride powder Potassium gluconate powder Potassium citrate; vegan capsule
Label portion 1.4 g 0.7 g 1.1 g 1 capsules
Potassium per label portion 448 mg 363 mg 175 mg 300 mg
Pack price €15.99 €9.99 €28.99 €6.99
Price per portion €0.07 €0.03 €0.07 €0.08
Price per 1 g potassium €0.15 €0.08 €0.40 €0.26
Allergen information See the manufacturer’s full allergen statement. See the manufacturer’s full allergen statement. See the manufacturer’s full allergen statement. See the manufacturer’s full allergen statement.
Certifications — — — —
Label information Label information Label information Label information Label information

Prices include VAT for Ireland. Courier delivery: €6.99; free from €65.00. Estimated delivery: 2–4 working days.

Product facts checked: 2026-10-28.

Frequently asked questions

What is the difference between potassium citrate, chloride and gluconate on a label?

They are different salts of potassium, and the same weight of each contains a different amount of potassium. Labels therefore state the potassium itself per serving, for example 448 mg of potassium from about 1.4 g of potassium citrate powder. Compare that line and the serving size.

Why do so many potassium capsules show 99 mg?

99 mg per capsule or tablet is a common label strength, about 5 % of the 2,000 mg nutrient reference value. Products with more potassium per serving usually count several capsules or a measured spoon of powder as one serving, so check how many units make up a serving on each label.

What should I read on the label before choosing a potassium product?

The serving size, how often it may be repeated, the maximum per day and the warnings. Ask a pharmacist or doctor before use if you take medicines or have a medical condition.