Chanca Piedra - Hydrochlorothiazide, Methyldopa Interaction
Herbal: Chanca Piedra
Also Known As: Phyllanthus niruri, Amli, Arranca-Pedras, Bhonya, Bhoomi Amalaki, Bhui-Amla, Bhuianvalah, Bhumi-Amla, Bhuimy Amali, Bhuin Amla, Bhumy Amalaki, Bhumyamalaki, Brise Pierre, Cane Peas Senna, Cane Senna, Carry-Me-Seed, Casse-Pierre, Chanca-Piedra Blanca, Chance Pierre
Drug: Hydrochlorothiazide, Methyldopa
Brand names:
Aldoril 15, Methazide, Aldoril 25, Aldoril D30

Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 18, 2025
Interaction Details
Hydrochlorothiazide, Methyldopa is classified as belonging to the following category: Antihypertensive Drugs
Theoretically, concomitant use of chanca piedra with antihypertensive drugs might have additive blood pressure lowering effects.
Animal research suggests that chanca piedra can decrease blood pressure. However, this effect was not observed in most hypertensive patients treated with chanca piedra for 10 days.
Interaction Rating
Likelihood of Occurrence
UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
References
- Srividya N, Periwal S. Diuretic, hypotensive and hypoglycaemic effect of Phyllanthus amarus. Indian J Exp Biol 1995; 33:861-4.
- Amaechina, F. C. and Omogbai, E. K. Hypotensive effect of aqueous extract of the leaves of Phyllanthus amarus Schum and Thonn (Euphorbiaceae). Acta Pol.Pharm. 2007;64(6):547-552.
Interaction Details
Hydrochlorothiazide, Methyldopa is classified as belonging to the following category: Diuretic Drugs
Theoretically, concomitant use of chanca piedra with diuretics might increase diuresis.
Some preliminary clinical research in adults with hypertension shows that chanca piedra has diuretic properties. However, higher quality research in adults with kidney stones shows taking chanca piedra does not increase urine volume when compared with placebo. Until more is known, use cautiously in patients taking diuretic drugs.
Interaction Rating
Likelihood of Occurrence
PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
References
- Srividya N, Periwal S. Diuretic, hypotensive and hypoglycaemic effect of Phyllanthus amarus. Indian J Exp Biol 1995; 33:861-4.
- Nishiura, J. L., Campos, A. H., Boim, M. A., Heilberg, I. P., and Schor, N. Phyllanthus niruri normalizes elevated urinary calcium levels in calcium stone forming (CSF) patients. Urol.Res 2004;32(5):362-366.
Chanca Piedra Overview

Chanca Piedra - More Interactions
Chanca Piedra interacts with 994 drugs
Interaction Rating Key
These severity listings are for informational use only. Never start, stop or otherwise change your therapy before speaking with your provider.
Major | The combined use of these agents is strongly discouraged as serious side effects or other negative outcomes could occur. |
Moderate | Use cautiously under the care of a healthcare professional or avoid this combination. A significant interaction or negative outcome could occur. |
Minor | Be aware that there is a chance of an interaction. Watch for warning signs of a potential interaction. |
Unknown | No interactions have been reported or no interaction data is currently available. |
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
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Drug descriptions are provided by MedlinePlus.