Herb & supplement monograph

Coffee Charcoal Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by ·Updated June 2026
What is this page for?

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

But these pages have grown well beyond that into a full monograph — what Coffee Charcoal 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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Coffee Charcoal Drug Interactions: The Bottom Line

From the HelloPharmacist Editorial Team · Updated July 2026

Based on the available evidence, Coffee Charcoal drug interactions are a real concern for anyone taking medicines by mouth, because the charcoal can reduce how well those medicines are absorbed. Every listed interaction is rated moderate, none are major or minor, and all of them come down to this single absorption effect.

Interactions deserving the most attention

The one interaction that stands out applies to oral medications as a group. Coffee charcoal can bind medicines in the digestive tract so that less of the drug reaches the bloodstream, and this effect has some human support, though the studies behind it are limited. The main risk is a weaker effect from the medication, which matters most for medicines where getting the full dose is critical.

What the rest of the list means

The very long list of affected medications can look alarming, but it does not mean thousands of separate problems. It reflects one physical mechanism repeated across nearly every drug taken by mouth. The concern only arises when the charcoal and a medicine are in the gut at the same time; it does not change how the body handles a drug once it has been absorbed.

Check your medications against Coffee Charcoal

Based on HelloPharmacist’s Coffee Charcoal interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with Coffee Charcoal

2022 medications have a known interaction with Coffee Charcoal, graded by severity. Select any drug for the full evidence-based detail.

2,830 drugs
"phentolamineOraVerse, Rogitine, Ryzumvi› 6-mercaptopurinePurinethol› AbacavirZiagen› Abacavir Sulfate, Dolutegravir, LamivudineTriumeq› Abacavir, LamivudineEpzicom› AbciximabReoPro› AbemaciclibVerzenio› Abiraterone› Abiraterone AcetateYonsa, Zytiga› AbrocitinibCibinqo› AcalabrutinibCalquence› AcamprosateCampral› AcarboseGlucobay, Prandase, Precose› AcebutololRhotral, Sectral› AcenocoumarolSintrom› AcepromazineAtravet› AcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength› Acetaminophen, AspirinGemnisyn› Acetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine› Acetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu› Acetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more› Acetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more› Acetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine› Acetaminophen, Butalbital, CodeineBancap w/ Codeine› Acetaminophen, Butalbital, Codeine PhosphatePhrenilin #3› Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound› Acetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more› Acetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3› Acetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS› Acetaminophen, Caffeine, IsomethepteneMigralam›
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 Coffee Charcoal 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 Coffee Charcoal affects

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

All 1 drug category Coffee Charcoal interacts with
Oral Drugs
Oral Drugs

Coffee charcoal can reduce the absorption of orally administered drugs and should be separated from oral drug administration by at least two hours.

Likelihood Probable Evidence D
Monograph

Coffee Charcoal: Uses, Safety & Side Effects

Medically reviewed by · Reviewed June 2026 ·
The bottom line

Coffee charcoal is made by roasting green coffee beans until they turn black, creating a charcoal-like material used traditionally for diarrhea and digestive complaints. Scientific evidence supporting its benefits is very limited, and it should not replace proven treatments. Talk with your pharmacist or doctor before using it, especially if you have a chronic gut condition.

Scientific name
Coffea arabica
Family
Rubiaceae
Part used
Roasted (carbonized) green coffee beans
Common forms
Powder, tablets, capsules, and granules
People commonly use it for
  • Diarrhea
  • Inflammatory bowel conditions
  • Irritable bowel syndrome (IBS)
  • Mild digestive upset
  • Wound and skin care (topical, traditional)

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance
OverallUse caution

It is generally used short-term, but high-quality safety data are limited.

PregnancyInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full pregnancy detail
BreastfeedingInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Jump to a section

Overview

Coffee charcoal (sometimes called Coffeae carbo) is made by roasting green, dried coffee beans until they turn black and char. This process leaves behind a charcoal-like material that is ground into a powder. It comes from the coffee plant, mainly Coffea arabica and Coffea robusta, which grow in tropical regions of Africa, Asia, and South America.

Unlike a regular cup of coffee, coffee charcoal is used as a remedy rather than a beverage. It has a long history in traditional and folk medicine, where it has been used for diarrhea, mild stomach and bowel complaints, and sometimes applied to the skin. Today it is found in some herbal products, often combined with other plant extracts.

How it works

When coffee beans are charred, the resulting material has a porous, charcoal-like surface. Like other forms of charcoal, it may be able to bind to substances in the gut, which could in theory soak up excess fluid or irritants and help firm up stool.

Roasted coffee also contains compounds that may have antioxidant and mild anti-inflammatory properties in laboratory settings. However, these proposed actions are mostly based on test-tube and animal studies. It is not clear how well they apply to people, or whether the amounts used in supplements are enough to make a difference.

Effectiveness

Does Coffee Charcoal work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by .

Evidence overview · 4 uses evaluated
4 Insufficient evidence
How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.
2Likely EffectiveGood evidence, though not yet conclusive.
3Possibly EffectiveSome evidence suggests a benefit.
4Possibly IneffectiveSome evidence it may not help.
5Likely IneffectiveFairly strong evidence it doesn’t help.
6IneffectiveStrong evidence it doesn’t work.
7Insufficient Reliable Evidence to RateToo little research to say either way.

For Coffee Charcoal, current evidence isn’t strong enough to rate any specific use. The conditions it has been studied for are listed below.

Also studied for 4 conditions — evidence insufficient to rate
Insufficient Reliable Evidence To Rate Crohn disease
Rating & evidence shown verbatim from Natural Medicines

Observational research over a period of 24-28 days in a small group of patients with active inflammatory bowel disease (50% ulcerative colitis and 50% Crohn disease) suggests that taking a specific combination product containing coffee charcoal 50 mg, myrrh 100 mg, and chamomile extract 70 mg per tablet (MYRRHINIL-INTEST, Repha GmbH) results in symptom resolution in 16-26 days. The probability of being free of symptoms did not differ between patients using other treatments, the coffee charcoal product alone, or a combination of the coffee charcoal product with other treatments. Overall efficacy was rated as good to very good by patients and physicians. The effect of coffee charcoal alone is unclear.

Sources Ref 104593
Insufficient Reliable Evidence To Rate Diarrhea
Rating & evidence shown verbatim from Natural Medicines

Observational research over a period of 7-14 days in a group of patients with active diarrhea related to an acute inflammatory disorder suggests that taking a specific combination product containing coffee charcoal 50 mg, myrrh 100 mg, and chamomile extract 70 mg per tablet (MYRRHINIL-INTEST, Repha GmbH), alone or in combination with other therapies, improves overall symptoms of diarrhea. The median time to symptom resolution was 4 days. The probability of symptom resolution with use of the coffee charcoal combination product was similar to that observed when other treatments were used. Overall efficacy was rated as good to very good by patients and physicians. The effect of coffee charcoal alone is unclear.

Sources Ref 104593
Insufficient Reliable Evidence To Rate Irritable bowel syndrome (IBS)
Rating & evidence shown verbatim from Natural Medicines

Observational research over a period of 24-28 days in a group of patients with IBS suggests that taking a specific combination product containing coffee charcoal 50 mg, myrrh 100 mg, and chamomile extract 70 mg per tablet (MYRRHINIL-INTEST, Repha GmbH), alone or in combination with other therapies, improves overall symptoms of diarrhea. The probability of being free of symptoms did not differ between patients using other treatments or when the coffee charcoal combination product was used in combination with other treatments. Overall efficacy was rated as good to very good by patients and physicians. The effect of coffee charcoal alone is unclear.

Sources Ref 104593
Insufficient Reliable Evidence To Rate Ulcerative colitis
Rating & evidence shown verbatim from Natural Medicines

Preliminary clinical research shows that taking a specific combination product containing coffee charcoal 50 mg, myrrh 100 mg, and chamomile extract 70 mg per tablet (MYRRHINIL-INTEST, Repha GmbH) four tablets three times daily for 12 months is non-inferior to mesalamine therapy for maintaining remission in patients with inactive ulcerative colitis. In addition, observational research over a period of 24-28 days in a small group of patients with active inflammatory bowel disease (50% ulcerative colitis and 50% Crohn disease) suggests that taking this same product results in symptom resolution in 16-26 days. The probability of being free of symptoms did not differ between patients using other treatments, the coffee charcoal product alone, or a combination of the coffee charcoal product with other treatments. Overall efficacy was rated as good to very good by physicians. The effect of coffee charcoal alone is unclear.

Sources Ref 93653 Ref 104593

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

Coffee charcoal is generally used for short periods for mild digestive complaints. Still, high-quality safety information is limited, so caution is wise. Because charcoal-type products can bind things in the digestive tract, they may also reduce how well your body absorbs nutrients or medicines if taken close together.

People with ongoing or severe diarrhea, blood in the stool, fever, or signs of dehydration should see a doctor rather than self-treating. The same is true if symptoms last more than a couple of days.

Pregnancy: Safety has not been established, so coffee charcoal is best avoided during pregnancy. Breastfeeding: There is not enough information to consider it safe, so avoid use unless your doctor or pharmacist advises otherwise. Always check with a pharmacist or doctor before giving it to children.

Side effects

Coffee charcoal is usually well tolerated in small amounts for short periods. Possible side effects relate mainly to the digestive tract and can include constipation, bloating, or stomach discomfort. Like other charcoal products, it may darken the stool, which is harmless but can be alarming if you are not expecting it.

Serious side effects are uncommon, but stop use and seek medical care if you have severe abdominal pain, vomiting, signs of a bowel blockage, or an allergic reaction such as rash, swelling, or trouble breathing.

Dosing

There is no firmly established standard dose for coffee charcoal. It is sold as a powder, tablets, capsules, or granules, often in combination with other herbs, and the amount varies by product.

The safest approach is to follow the directions on the product label and to use it only for short periods. Because it may interfere with the absorption of nutrients and medicines, it is generally taken apart from other supplements and drugs. Check with your pharmacist or doctor for guidance tailored to your situation before starting.

Pregnancy & Breastfeeding

Coffee Charcoal & Pregnancy

Insufficient reliable information

Insufficient reliable information available; avoid using.

Coffee Charcoal & Breastfeeding

Insufficient reliable information

Insufficient reliable information available; avoid using.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.

© 2026 Therapeutic Research Center

Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center

References & further reading

The 3 references that drive our Coffee Charcoal monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
  2. Langhorst J, Varnhagen I, Schneider SB, et al. Randomised clinical trial: a herbal preparation of myrrh, chamomile and coffee charcoal compared with mesalazine in maintaining remission in ulcerative colitis-a double-blind, double-dummy study. Aliment Phar PubMed
  3. Albrecht U, Müller V, Schneider B, Stange R. Efficacy and safety of a herbal medicinal product containing myrrh, chamomile and coffee charcoal for the treatment of gastrointestinal disorders: a non-interventional study. BMJ Open Gastroenterol. 2015;1(1):e PubMed
Keep reading

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.

Parts of this content are provided by the Therapeutic Research Center, LLC.

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.

© 2021 Therapeutic Research Center, LLC

Pharmacist Counseling Corner

Coffee Charcoal: Common Questions

What is Coffee Charcoal used for, and does it work?
People use Coffee Charcoal for a range of reasons, but according to the Natural Medicines database the current clinical evidence is insufficient to confirm it works for the specific conditions it has been studied for. See the graded list on this page, and talk to your pharmacist or doctor before relying on it for any condition.
Does Coffee Charcoal interact with prescription medications?
Yes. We list 2022 medications with a known interaction with Coffee Charcoal. Use the checker above to see how Coffee Charcoal interacts with a specific drug.
How are Coffee Charcoal interactions rated?
Each interaction is graded major, moderate, or minor based on how clinically significant it is and the strength of the evidence behind it. Major interactions are the most serious and are best avoided, or used only under close professional supervision.
Is it safe to take Coffee Charcoal with my medications?
It depends on the specific medication. Some combinations are fine, while others call for monitoring, timing changes, or should be avoided. Check your exact drug above and confirm with your pharmacist or doctor before starting, stopping, or changing anything.
Where does this Coffee Charcoal interaction information come from?
Our interaction data is built on the Natural Medicines database — an evidence-graded reference for vitamins, herbs, and supplements — and is reviewed by licensed HelloPharmacist pharmacists, who may add clinical context.
What is Coffee Charcoal used for?
It is traditionally used for diarrhea, mild digestive upset, and inflammatory bowel complaints. Evidence that it actually works for these conditions is limited, so it should not replace proven treatments.
Is Coffee Charcoal the same as drinking coffee?
No. Coffee Charcoal is made by charring coffee beans until black and is used as a remedy, not a beverage. It is meant to be taken differently and for different reasons than a regular cup of coffee.
Is Coffee Charcoal safe to take?
For most healthy adults, short-term use for mild symptoms is generally considered low-risk, but high-quality safety data are limited. Avoid it during pregnancy and breastfeeding, and talk to your pharmacist or doctor first.
Will Coffee Charcoal turn my stool black?
Yes, like other charcoal products it can darken the stool. This is harmless, but if you also notice fever, severe pain, or blood in the stool, see a doctor.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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