Condurango Drug Interactions, Uses, Effectiveness, Safety & More
What is this page for?
First and foremost: how Condurango interacts with medications. The heart of this page is the interaction list — every drug Condurango is known to interact with, and how serious each one is.
But these pages have grown well beyond that into a full monograph — what Condurango 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
Check Condurango against your medication
Add one medicationDrugs that interact with Condurango
0 medications have a known interaction with Condurango, graded by severity. Select any drug for the full evidence-based detail.
We don’t currently list any known drug interactions for Condurango. This doesn’t guarantee none exist — always confirm with your pharmacist before combining supplements with your medications.
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 Condurango combination — clinical detail, likelihood, evidence level, and citations.
- Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Condurango: Uses, Safety & Side Effects
Condurango is the bark of a South American vine traditionally used as a bitter to stimulate appetite and ease digestive complaints. Modern scientific evidence supporting any of these uses is very limited, and its safety has not been well studied, so use caution and talk with a pharmacist or doctor before trying it.
- Scientific name
- Marsdenia condurango
- Family
- Apocynaceae
- Part used
- Dried bark
- Common forms
- Tincture, fluid extract, tea (decoction), homeopathic preparations
- Digestive upset
- Loss of appetite
- Stimulating gastric secretion
- Indigestion and bloating
- Traditional tonic
Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.
Little modern safety data exists, so use cautiously and at low amounts.
Insufficient reliable information available; avoid using.
Read the full pregnancy detailInsufficient reliable information available; avoid using.
Read the full breastfeeding detailPregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Overview
Condurango is an herbal remedy made from the dried bark of Marsdenia condurango, a climbing vine native to South America, especially the Andes regions of Ecuador, Colombia, and Peru. The name comes from a local word, and the bark has a long history in folk medicine.
Traditionally, condurango bark has been used as a bitter tonic. Like other bitter herbs, it was taken to stimulate appetite and support digestion. It is most often prepared as a tincture, fluid extract, or as a tea (decoction) made by simmering the bark. It also appears in some homeopathic products.
How it works
Condurango bark contains bitter compounds known as condurango glycosides, along with other plant chemicals. Like classic bitter herbs, the bitter taste is thought to reflexively stimulate saliva and stomach secretions, which may help with appetite and digestion.
This proposed mechanism is mostly based on how bitters are believed to work in general and on traditional understanding. Detailed laboratory and animal studies are limited, and the active compounds have not been thoroughly studied in people.
Does Condurango work?
How to read these evidence grades
Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.
For Condurango, current evidence isn’t strong enough to rate any specific use. The conditions it has been studied for are listed below.
Also studied for 1 condition — evidence insufficient to rate
Insufficient Reliable Evidence To Rate Cancer
Although there has been interest in using oral condurango for cancer, there is insufficient relable information about the clinical effects of condurango for this purpose.
Source & disclaimer. Effectiveness ratings and evidence summaries are provided by Natural Medicines (Therapeutic Research Center) and shown as licensed. Where Natural Medicines hasn’t rated a use, HelloPharmacist’s pharmacists may add their own reviewed rating and evidence (each such entry is labeled). This is educational information, not medical advice — talk with your pharmacist or doctor before starting, stopping, or changing a supplement.
Safety & precautions
Because condurango has not been well studied in modern times, its safety is not well understood. When used in small, traditional amounts as a bitter, it is generally considered to be reasonably tolerated, but large doses may be harmful and could cause nervous system effects.
People with stomach ulcers or other stomach conditions should be cautious, since bitters increase stomach acid. Anyone with a chronic illness, those taking regular medications, and older adults should check with a healthcare professional first.
Pregnancy and breastfeeding: There is no reliable safety information for these situations. To be safe, avoid condurango if you are pregnant or breastfeeding.
Side effects
In small amounts, condurango may cause mild digestive upset in some people. In larger amounts it could potentially cause more serious effects, including dizziness, disturbances of the nervous system, or even convulsions, based on older reports about its glycoside content.
If you notice any unusual symptoms after taking it, stop using it and seek medical advice. Allergic reactions are also possible with any plant product.
Dosing
There is no well-established or standardized dose of condurango. Traditional preparations included tinctures, fluid extracts, and bark teas, but the amounts vary widely between products.
If you choose to use a condurango product, follow the directions on the label and do not exceed them. Because reliable dosing information is lacking, it is best to start low and to check with a pharmacist or doctor before use.
Condurango & Pregnancy
Condurango & Breastfeeding
© 2026 Therapeutic Research Center
Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center
References & further reading
The 1 sources that drive our Condurango monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing.
- Herbs at a Glance — NIH NCCIH Source
This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.
Brands that make products with Condurango
9 brands in our database make a supplement containing Condurango.
Supplement products with Condurango
37 products in our database contain Condurango. Open any to see its full ingredient list and every drug interaction we check.
Condurango: Common Questions
What is Condurango used for, and does it work?
Does Condurango interact with prescription medications?
How are Condurango interactions rated?
Is it safe to take Condurango with my medications?
Where does this Condurango interaction information come from?
What is Condurango used for?
Is Condurango safe to take?
Can I take Condurango while pregnant or breastfeeding?
Can Condurango treat cancer?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Products that contain Condurango
A rotating sample of real supplements in our database that list Condurango — open any to see its full ingredients and every drug interaction we check.
- Cell-Tox Ease by Earth Friend Herb Co.
- Condurango Powder by TerraVita Premium Collection
- Immunagen by Earth Friend Herb Co.
- Condurango Powder by TerraVita Premium Collection
- Funga-Stop Formula by Woodstock Herbal Products
- Core Pau d'Arco Blend by Energetix
- Core Condurango Blend by Energetix
- Core Pau d'Arco Blend by Energetix
- Condurango Alcohol Free by Herbal Terra
- Condura by NutraMedix
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