Most chanca piedra supplements are taken at doses of 400 to 500 mg, two to three times per day, putting the typical daily intake between 800 and 1,500 mg. There is no officially established dose, but this range appears consistently across clinical research and practitioner recommendations.
General Daily Dosage Range
A common starting point is 400 mg taken three times a day, totaling 1,200 mg. In a clinical trial on liver function published in the National Library of Medicine, researchers used 500 mg twice daily (1,000 mg total) and considered it both safe and effective for that study’s duration. These two benchmarks, 1,000 to 1,200 mg per day, represent the range most people will encounter on supplement labels and in practitioner guidance.
The form of chanca piedra matters. Capsules typically contain a concentrated extract, while loose-leaf tea delivers a much lower and less standardized amount. If you’re using a tea or tincture, the milligram equivalents are harder to pin down, so capsules or tablets offer more predictable dosing.
Dosage Varies by Purpose
The reason you’re taking chanca piedra can shift the recommended amount. For general kidney stone support, 400 mg three times daily is a widely cited dose. For hepatitis B or acute viral hepatitis support, some sources recommend a higher range of 400 to 1,100 mg three times daily, which could bring the upper end to around 3,300 mg per day. That higher range should only be used under the guidance of a healthcare provider, since it significantly exceeds the general recommendation.
If you’re taking chanca piedra for kidney stones specifically, some practitioners suggest it can be used for up to three months at the standard dose. For other purposes, a shorter course of about one month is more commonly recommended before taking a break.
How Long You Can Take It
Chanca piedra is considered possibly safe when taken for up to three months. Beyond that, there simply isn’t enough human research to confirm what happens with longer continuous use. The common recommendation is to limit routine use to about one month, then pause. A three-month course is sometimes suggested for kidney stones, where the herb needs more time to have an effect on stone formation or size.
Cycling on and off, rather than taking it indefinitely, is the cautious approach until more long-term data exists.
Side Effects to Watch For
Chanca piedra is generally well tolerated at standard doses, but side effects have been reported in human trials. These include nausea, stomach cramps, painful urination, and blood in the urine. Some people develop an allergic reaction, usually showing up as hives or a rash. If you notice blood in your urine or persistent pain while urinating, stop taking it.
Because chanca piedra can lower blood sugar and affect blood pressure, people already taking medications for either condition should be cautious about stacking effects.
Who Should Avoid It
Pregnant women should avoid chanca piedra. Animal research found that while the plant didn’t cause birth defects or reproductive toxicity outright, it did lead to changes in maternal kidney weight and abnormally large offspring at higher doses. There is no human safety data during pregnancy, so the risk isn’t worth taking. The same caution applies during breastfeeding, where safety data is essentially nonexistent.
People with bleeding disorders or those scheduled for surgery should also be cautious, since some compounds in chanca piedra may slow blood clotting. If you take blood thinners, lithium, or diabetes medication, the herb could amplify or interfere with those drugs.
Practical Tips for Dosing
Start at the lower end of the range, around 800 to 1,000 mg per day split into two doses, and see how your body responds before increasing. Taking it with food can reduce the chance of stomach cramps or nausea. Look for products that specify the extract ratio or standardized content on the label, since “500 mg of chanca piedra” can mean very different things depending on whether it’s a raw powder or a concentrated extract.
Keep your course to one month for general use, or up to three months if you’re targeting kidney stones. After that, take a break of at least a few weeks before starting again.