Most popular
Potassium
A mineral that controls fluid balance and helps nerves, muscles and the heart work.
- Why people take it
- Blood pressure, heart and muscle function.
- What the evidence says
- Eating more potassium-rich food helps lower blood pressure. Most people should raise potassium through food, not supplements.
- Be careful
- Dangerous with kidney disease or with some blood-pressure medicines (ACE inhibitors, ARBs, potassium-sparing diuretics): too much potassium can upset the heart rhythm. Take supplements only if your doctor advises.
- In food
- Bananas, potatoes, coconut water, dals and beans, leafy greens, tomatoes.
Other most popular
Common questions
What is Potassium?
A mineral that controls fluid balance and helps nerves, muscles and the heart work.
Why do people take Potassium?
Blood pressure, heart and muscle function.
Does Potassium work?
Eating more potassium-rich food helps lower blood pressure. Most people should raise potassium through food, not supplements.
Is Potassium safe?
Dangerous with kidney disease or with some blood-pressure medicines (ACE inhibitors, ARBs, potassium-sparing diuretics): too much potassium can upset the heart rhythm. Take supplements only if your doctor advises.
Sources and further reading
Last reviewed 31 October 2026. Written by Satya Babu.
🔎 Search all supplements