Potassium

Best for

Reduce kidney stone risk

Large effect, needs confirmation · 40–2800 mg/day for 1–13 weeks · 3 studies , n=98

15 papers · 3 claims · 36 outcomes scored · 3 positive

Outcomes

What potassium actually does, by outcome

Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.

Outcome Effect size Evidence Dose Weeks Rank

Reduce kidney stone risk Large effect, needs confirmation

Corrects the urine chemistry imbalances that let crystals form.

3 RCTs n=98 40–2800 mg 1–13 wk #1/4

25990255·30036516·32506135

large

3 RCTs n=98

40–2800 mg

1–13 wk

#1 /4

Stabilize electrolytes in kidney disease Faint early signal

Keeps phosphorus, potassium, and sodium in safer ranges when kidneys struggle.

2 RCTs n=122 90–3900 mg 4 wk #1/3

32506135·33870711

small

2 RCTs n=122

90–3900 mg

4 wk

#1 /3

Lower your blood pressure Likely real but unnoticeable

Brings down both systolic and diastolic, especially when baseline runs high.

9 meta-analyses n=5.2k 30–3900 other 1–15 wk

19763120·2207419·23558164·27448942 +5 more

trivial

9 meta-analyses n=5.2k Meta-analyzed I²=93%

30–3900 other

1–15 wk

—

Outcome	Effect	Evidence	Dose	Weeks	Rank
Reduce kidney stone risk Large effect, needs confirmation	large	3 RCTs n=98	40–2800 mg	1–13 wk	#1/4
Stabilize electrolytes in kidney disease Faint early signal	small	2 RCTs n=122	90–3900 mg	4 wk	#1/3
Lower your blood pressure Likely real but unnoticeable	trivial	9 meta-analyses n=5.2k Meta-analyzed	30–3900 other	1–15 wk	—

Risk profile

Adverse events and known drug interactions

Safety events

abdominal pain mild

hyperkalaemia

Drug interactions

Diuretics major increases toxicity

other major increases toxicity

Ace Inhibitors And Arbs moderate increases toxicity

Sources

Generated August 14, 2026

Potassium

What potassium actually does, by outcome

Adverse events and known drug interactions

More evidence for Potassium

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More evidence for Potassium

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