Drug & supplement interaction

Yohimbe + Osimertinib Mesylate

Osimertinib Mesylate brand name: Tagrisso.

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Osimertinib Mesylate falls into 2 drug categories that Yohimbe can interact with; the most serious is rated moderate. Theoretically, CYP3A4 inhibitors might increase the levels and adverse effects of yohimbine, a constituent of yohimbe bark.

Read the full interaction report
SeverityModerate
LikelihoodPossible
Interactions2
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Yohimbe and Osimertinib Mesylate

These two interact in 2 distinct ways. Each one is explained separately below.

Why Are There 2 Interactions?

Yohimbe interacts with whole categories of medication. Osimertinib Mesylate falls into 2 of those categories, so it can interact with Yohimbe in 2 different ways. We’ve listed each one below — your overall risk is driven by the most serious of them (Moderate).

Moderate

CYTOCHROME P450 3A4 (CYP3A4) INHIBITORS

1 of 2

Why this applies to Osimertinib Mesylate

Osimertinib Mesylate falls under CYTOCHROME P450 3A4 (CYP3A4) INHIBITORS — the group Yohimbe interacts with.

Theoretically, CYP3A4 inhibitors might increase the levels and adverse effects of yohimbine, a constituent of yohimbe bark.
In vitro and clinical research shows that the yohimbe bark constituent, yohimbine, is metabolized by CYP3A4 enzymes. Theoretically, drugs that inhibit CYP3A4 might increase the levels and adverse effects of yohimbine.
Severity Moderate Likelihood Possible Evidence D

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.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the key thing to understand: in this pairing, it's the yohimbe that may build up, not your Tagrisso. Yohimbine (the active part of yohimbe) is broken down by an enzyme called CYP3A4, and osimertinib can mildly slow that same enzyme. So your cancer treatment itself shouldn't change, but the yohimbine could hang around longer and hit harder.

That matters because yohimbe already tends to raise blood pressure and speed up your heart rate, and can cause anxiety, jitteriness, and headaches. More of it in your system means more of those effects. To be fair, this concern is theoretical, based on how the two are processed rather than real-world reports. Still, since you're being treated for lung cancer, please run any yohimbe use past your oncologist or pharmacist first.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Le Corre P, Parmer RJ, Kailasam MT, et al. Human sympathetic activation by alpha2-adrenergic blockade with yohimbine: Bimodal, epistatic influence of cytochrome P450-mediated drug metabolism. Clin Pharmacol Ther. 2004;76(2):139-53.
  2. Bharucha AE, Skaar T, Andrews CN, et al Relationship of cytochrome P450 pharmacogenetics to the effects of yohimbine on gastrointestinal transit and catecholamines in healthy subjects. Neurogastroenterol Motil. 2008;20(8):891-9. PubMed
Minor

CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES

2 of 2

Osimertinib Mesylate also falls under CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES.

Theoretically, yohimbe might decrease the levels and clinical effects of CYP3A4 substrates.
In vitro research shows that yohimbe extract induces CYP3A4 enzymes.
Severity Minor Likelihood Possible Evidence D

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.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the basic idea with these two together. Osimertinib (Tagrisso) is your active cancer medicine, and your liver clears it using an enzyme called CYP3A4. Lab studies suggest yohimbe may speed that enzyme up. In theory, a faster enzyme could clear osimertinib a little quicker, which might lower its levels and, at least on paper, make it work less well against your lung cancer.

I want to be honest about the evidence here: this comes only from test-tube research, not from people, so it's rated minor and theoretical. Still, osimertinib is a serious medicine where you don't want anything chipping away at how well it works. Yohimbe also carries its own risks, like high blood pressure and a racing heart. Please check with your oncologist or pharmacist before adding it.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Haron MH, Dale O, Martin K, et al. Evaluation of the Herb-Drug Interaction Potential of Commonly Used Botanicals on the US Market with Regard to PXR- and AhR-Mediated Influences on CYP3A4 and CYP1A2. J Diet Suppl 2022. PubMed

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction 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.
  • 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.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Yohimbe Also Interacts With Other Medications

Yohimbe has 9 major, 679 moderate, 436 minor known drug interactions in our database — the Osimertinib Mesylate one above is among them. If you take anything else, check it against the full list below.

Major 9 Moderate 679 Minor 436 No known interaction 1,706 (incl. Osimertinib Mesylate)
Taking anything else?

Check Another of Your Medications Against Yohimbe

Covers the 2,830 medications we’ve checked against Yohimbe. Pick one to open its full report.

From our Q&A

Questions About Yohimbe or Osimertinib Mesylate

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Yohimbe or Osimertinib Mesylate, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Osimertinib Mesylate

This page covers Yohimbe only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Osimertinib Mesylate page lists 164 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), Arsenic (major), Cesium (major) and Ephedra (major).

By severity: 8 major · 117 moderate · 39 minor.

From our pharmacist’s overview on the Osimertinib Mesylate page

“Osimertinib (Tagrisso) treats EGFR-mutated lung cancer, and this is a list to read carefully before you add anything from the supplement aisle. Of the 164 ingredients on file, most can change how much drug reaches your blood, chiefly through the CYP3A4 enzyme that clears it.”

Reviewed by 2 · Jul 18, 2026

Open the Osimertinib Mesylate interaction page

One more smart check

Taking Yohimbe as Part of a Dietary Supplement Product? Check It for Interactions

We hold 1,054 real supplement products containing Yohimbe, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Yohimbe. Your product may carry other ingredients that interact with Osimertinib Mesylate too, on top of Yohimbe — and those would not show on this page. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Yohimbe and Osimertinib Mesylate Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Yohimbe
Top 25%

#163 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Osimertinib Mesylate
Steady interest

#1,701 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Supplement

About Yohimbe

What is Yohimbe?

Yohimbe
  • Erectile dysfunction
  • Low sex drive
  • Sexual performance
  • Weight loss
  • Athletic performance

Yohimbe is a West African tree bark that contains yohimbine, a compound mainly promoted for erectile dysfunction and as an aphrodisiac. A prescription form of yohimbine has some evidence for erectile dysfunction, but over-the-counter yohimbe supplements vary widely in content and can cause serious side effects like high blood pressure and fast heart rate. Because of these safety concerns, talk to your pharmacist or doctor before using it.

Read the full Yohimbe monograph & all interactions
Medication

About Osimertinib

What Is Osimertinib Used For?

Brand name: Tagrisso

Tagrisso is used to treat adults with non-small cell lung cancer (NSCLC) whose tumors have specific EGFR mutations — either an exon 19 deletion or an exon 21 L858R mutation — confirmed by an FDA-approved test. It is used in several settings: after surgery to reduce the risk of cancer returning (adjuvant therapy), for locally advanced stage III NSCLC that has not progressed after chemoradiation, and as a first-line treatment for locally advanced or metastatic NSCLC (including in combination with pemetrexed and platinum-based chemotherapy).

Tagrisso is also approved for adults with metastatic NSCLC that carries a specific resistance mutation called T790M, when the cancer has stopped responding to another EGFR-targeted therapy.

See full Osimertinib drug information
Keep checking

Other Drugs & Yohimbe

Browse every other medication we’ve checked against Yohimbe — both the ones with a known interaction and the ones without. Select any drug for the full detail.

9Major
679Moderate
436Minor
1,705No known interaction
9 Major 679 Moderate 436 Minor 1,705 No interaction
Major

9 interactions

Moderate

679 interactions

Showing 60 of 679 moderate interactions — see all 679 on the Yohimbe page.

Minor

436 interactions

Showing 60 of 436 minor interactions — see all 436 on the Yohimbe page.

No interaction 1,705 drugs checked — show the list

We also checked Yohimbe against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 1,705 medications checked with no known interaction — see the full Yohimbe list.

See the full Yohimbe interactions page
See every supplement checked against Osimertinib Mesylate, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

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

Keep exploring
Yohimbe monograph › Uses, safety, and every drug interaction in one place Osimertinib Mesylate supplement interactions › Every supplement checked against Osimertinib Mesylate, ranked by severity Osimertinib drug information › The full plain-English guide to this medication Supplement interaction checker › Check any supplement or product against your medications Browse medications A–Z › Every drug we've checked against herbs & supplements Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Yohimbe and Osimertinib Mesylate Together: Common Questions

Can you take Yohimbe with Osimertinib Mesylate?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
Why are there 2 interactions listed for Yohimbe and Osimertinib Mesylate?
Osimertinib Mesylate belongs to more than one drug category, and Yohimbe interacts with each of those categories a little differently. We list every one so nothing is missed — your overall risk is driven by the most serious of them.
How serious is the Yohimbe and Osimertinib Mesylate interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

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

Still Have a Question About Osimertinib Mesylate and Yohimbe?

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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.