Is Lime Water Good for Your Kidneys?

Yes, lime water can support your kidneys if it helps you stay adequately hydrated, because water helps your kidneys remove waste through urine. A 2025 randomized trial of a lime-based supplement reported reduced kidney stone recurrence, but it did not test ordinary lime water. Drink lime water as part of your usual fluid intake, and follow any fluid or dietary limits your clinician has given you.

Is lime water a good choice for kidney health?

Lime water can be a pleasant way to drink water, especially if you find plain water unappealing. Its most reliable benefit for the kidneys is hydration, not a special cleansing effect from lime.

It is not a treatment for kidney disease, and adding lime does not make water more effective at restoring damaged kidney function. If you already drink enough water, there is no established kidney-specific reason to add lime.

How does lime water affect the kidneys?

Your kidneys filter blood, help balance fluid and minerals, and remove waste through urine. Drinking enough fluid helps them do that work; it can also dilute urine, which may make some types of kidney stones less likely to form.

Lime contains citrate, a substance that can bind to calcium and help discourage certain crystals from forming. However, it is not clear whether a typical glass of lime water provides enough citrate to produce a meaningful effect on urine or stone risk.

Despite the word “cleanse,” your liver and kidneys do most of the body's detoxification. The lungs and gut also help eliminate waste, while sweat removes only trace amounts. For related guidance, see how to cleanse your kidneys naturally.

What does the research say about lime and kidney stones?

The 2025 trial enrolled 173 people who had undergone removal of calcium oxalate stones. Researchers compared a specific lime-based preparation with a placebo over 24 months and reported a reduction in stone recurrence.

That randomized trial is useful evidence about the preparation it studied, but it does not establish the effect of homemade lime water. The preparation and the amount of active substances it delivers may differ from lime slices steeped in water.

The study also focused on recurrence after stone removal, not on improving kidney function in the general population. Overall, evidence for ordinary lime water as a kidney-stone prevention strategy remains limited. People with recurrent stones should follow an individualized prevention plan rather than rely on lime water alone.

How much lime water is safe to drink?

There is no established kidney-specific dose of lime water. For most people without a fluid restriction, it can replace some plain water as part of normal daily drinking; you do not need to force large amounts. Fluid needs vary with factors such as activity, weather and medical conditions.

For a mild infusion, use:

• 1 lime (about 100 g), sliced
• 1 litre (about 4¼ US cups) of water

1. Wash the lime under running water and slice it.
2. Add the slices to the water and refrigerate for 2–4 hours.
3. Remove the slices after about 4 hours to limit bitterness from the peel and pith.
4. Keep the lime water refrigerated and drink it within 24 hours for the best flavour. Discard it after 2–3 days, or sooner if it becomes cloudy, slimy or sour-smelling.

Do not leave the infusion at room temperature for more than a few hours. If you squeeze lime into the water instead, the drink will contain more of the fruit's calories than a steeped infusion.

Who should be careful with lime water?

If you have chronic kidney disease, kidney failure, heart failure or another condition that requires a fluid limit, ask your clinician how lime water fits into that limit. More fluid is not always better, and the right amount depends on your circumstances.

If you have been told to limit potassium, check with your kidney care team about your overall diet. This is especially relevant if you have kidney disease or take medicines that can raise potassium, such as certain blood pressure medicines or potassium-sparing diuretics. A small amount of lime is not automatically unsafe, but restrictions should be individualized.

Lime's acidity can aggravate reflux and contribute to tooth enamel erosion. If it bothers you, use less lime or choose plain water; rinsing your mouth with plain water afterward can also help protect your teeth. Continue prescribed medicines and do not substitute lime water for medical care.

Get urgent medical attention for severe back or flank pain with fever or chills, or if you cannot pass urine. Contact a clinician promptly if you notice blood in your urine, persistent swelling or a concerning change in urination.