PlainPill

Potassium

People mainly take Potassium for energy, anxiety, heart & lipids. Based on 68 first-hand reports and 1,135 meta-analyses & systematic reviews in the medical literature. Ranked #233 of 1,974 overall.

40
User score
Mostly positive
34% positive7% mixed4% negative54% unclear

Of reports that state an outcome, 76% are positive.

Clinical research
AStrong research base
1,135
meta-analyses
4,061
RCTs
180,066
papers

What Potassium does, according to users

Of the people who reported each effect, the share who said it got better.

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

AStrong research base

3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.

Lancet · 2025 · Meta-analysis / systematic review
The effects of antidepressants on cardiometabolic and other physiological parameters: a systematic review and network meta-analysis

Conclusion: We found strong evidence that antidepressants differ markedly in their physiological effects, particularly for cardiometabolic parameters. Treatment guidelines should be updated to reflect differences in physiological risk, but choice of antidepressant should be made on an individual basis, considering clinical presentation and preferences of patients, carers, and clinicians.

PubMed 41135546 ↗
J Esthet Restor Dent · 2025 · Meta-analysis / systematic review
Survival and Complication Rates of Feldspathic, Leucite-Reinforced, Lithium Disilicate and Zirconia Ceramic Laminate Veneers: A Systematic Review and Meta-Analysis

Conclusion: Feldspathic, LRGC and LDS laminate-veneers showed high survival-rates at long-term observation. LDS slightly outperforms feldspathic and LRGC laminate-veneers with lower long-term complication rates. More studies providing long-term data on zirconia laminate-veneers are needed.

PubMed 39523553 ↗
Nutrients · 2023 · Meta-analysis / systematic review
The Effect of Non-Nutritive Sweetened Beverages on Postprandial Glycemic and Endocrine Responses: A Systematic Review and Network Meta-Analysis

Conclusion: Conclusions: The available evidence suggests that NNS beverages sweetened with single or blends of NNS have no acute metabolic and endocrine effects, similar to water. These findings provide support for NNS beverages as an alternative replacement strategy for SSBs in the acute postprandial setting.

PubMed 36839408 ↗

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

quarter teaspoon of kclas reported
400 mgdaily
1800 mgdaily
100 mgwith breakfast
a few gramsdaily
half a teaspoon or lessas reported

Reported side effects

How often each side effect came up across all reports.

hyperkalemia ×1seizures ×1heart problems ×1stomach issues ×1fatal overdose ×1heart palpitations ×1fatigue ×1

What users say

Verbatim quotes, shortened only — each links to the original discussion.

“Supplements: Vitamin D, niacin, potassium, marine collagen.”
Source discussion ↗
“Adding magnesium got me most of the way there but to finish off the cramps I needed to add a bit of potassium.”
Source discussion ↗
“I have tried a lot of supplements including magnesium, potassium, fish oil, B-complex, B2 Riboflavin but no solution yet.”
Source discussion ↗
“Potassium and Iron both helped.”
Source discussion ↗
“Potassium (for alcar)”
Source discussion ↗
Top discussions (5)

Other options for energy

User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate