Potassium (citrate)

Name: Potassium (citrate)
Brand: Pure Encapsulations
SKU: product-0373
Price: 15.00 GBP
Availability: InStock
Rating: 4.9 (22 reviews)

£15.00

Potassium (Citrate) by Pure Encapsulations is a mineral supplement providing potassium in its citrate form — a well-absorbed organic salt that pairs the mineral with citric acid to support tolerability and uptake compar…

Supports electrolyte balance and healthy fluid regulation
May aid regular heart rhythm via nerve signalling
Helps maintain skeletal muscle contraction and recovery
Citrate form is well-tolerated and readily absorbed
Studied for supporting alkaline urinary pH in stone prevention

4.9 (22 reflections)

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Pure EncapsulationsPotassium (citrate)

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About This Product.

Potassium is an essential electrolyte. It sits at the centre of fluid balance, nerve signalling, and the electrical activity that keeps the heart beating in a regular rhythm. Skeletal muscle contraction — including the kind that matters during exercise or recovery — also depends on adequate potassium status. Low dietary intake is common, particularly in people eating a processed-food-heavy diet with insufficient fruit and vegetables.

This supplement suits people who have confirmed low potassium through blood testing, those with higher losses through sweat (endurance athletes in heavy training), and individuals whose clinician has flagged borderline intake as a contributing factor in fatigue or muscle cramping. It is not a replacement for a potassium-rich diet, but it can help close a documented gap.

Pure Encapsulations is a brand with a longstanding reputation for clean, minimal formulations with few excipients. Their range is routinely recommended by clinicians who want a straightforward supplement without unnecessary additives. The citrate form also contributes to a mildly alkaline urinary environment, which is studied in the context of kidney stone prevention in susceptible individuals.

Frequently Asked.

Do I need a blood test before taking this?

It is strongly advisable. Potassium levels outside the normal range — in either direction — carry cardiovascular risks. A blood panel confirms whether supplementation is appropriate and at what level. Do not self-supplement at higher doses without medical guidance.

Is potassium citrate safe to take with blood pressure medications?

Some antihypertensives — particularly ACE inhibitors, ARBs, and potassium-sparing diuretics — can raise serum potassium independently. Combining them with a potassium supplement increases the risk of hyperkalaemia. Always check with your prescribing clinician before starting this product if you are on any of these drug classes.

How is potassium citrate different from potassium chloride?

Both deliver elemental potassium, but the citrate salt is generally better tolerated on the stomach and has a mildly alkalinising effect on urine. Potassium chloride is the form more commonly used in food fortification and some medications. For a daily supplement, citrate is often the preferred clinical choice.

How long before I notice a difference?

If low potassium is contributing to symptoms such as fatigue or muscle cramps, some people notice an improvement within one to two weeks of consistent use. The clearest way to confirm improvement is a follow-up blood test, which your clinician can arrange.

Who should avoid this supplement?

People with kidney disease or impaired kidney function should not take potassium supplements without close medical supervision, as the kidneys regulate potassium excretion. It is also not suitable for those with hyperkalaemia or taking medications that raise potassium levels, unless directed by a doctor.

Customer Reflections

Overall Sentiment

4.922 reflections

1 – 6 of 22 reflections

Noticed a real difference in cramping

4 months ago

Been getting leg cramps for months, especially at night. My GP flagged low potassium on a blood test so I picked this up. Three weeks in and the night cramps have almost completely stopped. Simple formula, no unnecessary fillers — exactly what I wanted.

Solid electrolyte supplement

4 months ago

Training for a half marathon and my nutritionist suggested topping up potassium given how much I'm sweating through long runs. This fits neatly into my stack alongside magnesium. No stomach upset, which I was worried about.

Good product, capsules a bit large

5 months ago

The formula itself is clean and I've noticed less fatigue over the past few weeks. My only gripe is the capsule size — they're on the larger side and I find them a bit awkward to swallow first thing in the morning. Would still recommend, just worth knowing.

Recommended by my nutritional therapist

5 months ago

She specifically suggested this brand because of the minimal excipients. I've tried other potassium supplements before that gave me mild nausea — no issues at all with this one. Taking it with food as instructed and it's been seamless.

5 months ago

Does exactly what it says. Blood levels back in normal range after two months. Would buy again.

Finally found one that doesn't upset my stomach

5 months ago

I've had trouble with potassium chloride tablets in the past — really harsh on the gut. The citrate form here is much gentler. I take it with breakfast and have had zero issues. My energy levels feel more stable too, though I've also made some dietary changes so hard to isolate exactly.

Potassium (citrate)

About This Product.

How to Take It

Frequently Asked.

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