Potassium

Yes. ACE inhibitors and ARBs reduce urinary potassium excretion and can cause hyperkalemia. Potassium-sparing diuretics also reduce excretion and can cause hyperkalemia. Loop and thiazide diuretics increase excretion and can cause hypokalemia. Experts recommend monitoring potassium status. — per the NIH Office of Dietary Supplements; general information, not medical advice.

Nutricost Potassium Citrate 99mg, 500 Capsules at $0.04 per serving — the lowest cost-per-dose potassium in our catalog. See the full ranking on the Best Potassium page.

We're tracking 35 active Potassium deals across Amazon US and partner retailers, ranked by community votes and cost-per-dose — not paid placement.

Across 34 tracked Potassium deals the median cost-per-dose is $0.192; the cheapest quartile comes in under $0.076 per serving. Anything below the median is a solid deal for the same molecule.

Deals are submitted by the community and ranked by net votes (hot minus cold) plus cost-per-dose normalised across container sizes. We take no affiliate kickbacks for ordering; sponsored slots, when present, are clearly badged.

In healthy people with normal kidney function, high dietary potassium intakes do not pose a health risk because the kidneys eliminate excess in the urine, and the NASEM committee did not set a Tolerable Upper Intake Level (UL) for potassium because the evidence was deemed insufficient. However, in people with impaired potassium excretion (e.g., chronic kidney disease or use of ACE inhibitors or potassium-sparing diuretics), even intakes below the AI can cause hyperkalemia, whose severe cases can cause muscle weakness, paralysis, heart palpitations, paresthesias, and potentially life-threatening cardiac arrhythmias — per the NIH Office of Dietary Supplements.

Potassium is found in a wide variety of plant and animal foods and in beverages: many fruits and vegetables are excellent sources, as are some legumes (e.g., soybeans) and potatoes, while meats, poultry, fish, milk, yogurt, and nuts also contain it. Among starchy foods, whole-wheat flour and brown rice are much higher in potassium than their refined counterparts. Some of the richest selected foods listed include dried apricots (½ cup, 755 mg), cooked lentils (1 cup, 731 mg), mashed acorn squash (1 cup, 644 mg), dried prunes (½ cup, 635 mg), and a baked potato (1 medium, 610 mg) — per the NIH Office of Dietary Supplements.

Labels often show the potassium COMPOUND weight, not elemental potassium. By weight, potassium chloride is about 52% elemental while gluconate is only about 17% — so a "1,000 mg gluconate" product delivers roughly 170 mg of elemental potassium. Compare the "Potassium" line in the Supplement Facts panel, not the front-of-bottle number.