Herb & supplement monograph

Cascara Sagrada Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·Updated July 2026

What is this page for?

First and foremost: how Cascara Sagrada interacts with medications. The heart of this page is the interaction list — every drug Cascara Sagrada is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Cascara Sagrada is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy

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Reviewed by licensed pharmacists Sourced from Natural Medicines

On this page

Cascara Sagrada Drug Interactions: The Bottom Line

From the HelloPharmacist Editorial Team · Updated July 2026

Based on the available evidence, the overall risk of a clinically significant Cascara Sagrada drug interaction appears low for most people. None of the listed interactions are rated major, and the great majority are minor, with the rest rated moderate and based on theoretical concerns rather than documented human harm.

Interactions deserving the most attention

The combinations we would watch most closely involve warfarin, digoxin, and diuretics. Cascara sagrada is a stimulant laxative, and long-term use can lower potassium levels, which could raise the risk of digoxin toxicity or add to potassium loss from diuretics or corticosteroids. If cascara sagrada causes diarrhea, it could also strengthen warfarin's blood-thinning effect and raise bleeding risk. Taking it with other stimulant laxatives could compound fluid and electrolyte losses. All of these concerns are theoretical, but they involve medicines where even small changes can matter.

What the rest of the list means

Cascara sagrada appears alongside hundreds of medications largely because lab research suggests it might mildly speed up an enzyme the body uses to clear many drugs. That effect looks weak, and none of these predicted interactions have been confirmed as harmful in people, so most listed combinations are unlikely to cause real problems.

Check your medications against Cascara Sagrada

Based on HelloPharmacist’s Cascara Sagrada interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with Cascara Sagrada

747 medications have a known interaction with Cascara Sagrada, graded by severity. Select any drug for the full evidence-based detail.

Don’t want to scroll the list? Just ask.

Tell us the medications you take and we’ll check each one against Cascara Sagrada using our pharmacist-reviewed interaction data.

AI summaries are generated from our Cascara Sagrada interaction data for education only — always confirm with your pharmacist. How we use AI

2,830 drugs

Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
Possible. Interaction 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
Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
Each drug listed above links to the full report for that exact Cascara Sagrada combination — clinical detail, likelihood, evidence level, and citations.
Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

The big picture

The kinds of drugs Cascara Sagrada affects

Every type of medication (drug category) Cascara Sagrada is known to interact with. Open any category for the detail — or search your exact drug in the checker above.

All 6 drug categories Cascara Sagrada interacts with

CorticosteroidsDigoxin (lanoxin)Diuretic DrugsStimulant LaxativesWarfarin (coumadin)Cytochrome P450 3a4 (cyp3a4) Substrates

Corticosteroids

Theoretically, cascara sagrada might increase the risk of hypokalemia when taken with corticosteroids.
Cascara sagrada has stimulant laxative effects, and long-term use has been associated with hypokalemia.