Drug & supplement interaction

Cat's Claw + Bromfenac Sodium

Bromfenac Sodium brand names: Prolensa, Bromsite.

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

Cat's Claw has a moderate interaction with Bromfenac Sodium. Theoretically, cat's claw may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.

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

Cat's Claw and Bromfenac Sodium

Here is the interaction we found between these two, with the evidence behind it.

Moderate

ANTICOAGULANT/ANTIPLATELET DRUGS

Why this applies to Bromfenac Sodium

Bromfenac Sodium falls under ANTICOAGULANT/ANTIPLATELET DRUGS — the group Cat's Claw interacts with.

Theoretically, cat's claw may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Cat's claw contains rhynchophylline and isorhynchophylline. Animal research suggests that these alkaloids can inhibit platelet aggregation. This interaction has not been reported in humans.
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 good news first: bromfenac in Prolensa or Bromsite is an eye drop you put right on the surface of your eye after cataract surgery. Only a tiny amount gets into your bloodstream, so a whole-body bleeding interaction with cat's claw is pretty unlikely with this particular product.

The concern on file is theoretical. Cat's claw contains compounds (rhynchophylline and isorhynchophylline) that slowed platelet clumping in animal lab tests, which could in theory add to the slight bleeding tendency of an NSAID like bromfenac. This has never been reported in people, and the dose your eye actually absorbs is small. Still, since you're healing from surgery, it's worth mentioning cat's claw to your surgeon or pharmacist before you use it.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Chen, C. X., Jin, R. M., Li, Y. K., Zhong, J., Yue, L., Chen, S. C., and Zhou, J. Y. Inhibitory effect of rhynchophylline on platelet aggregation and thrombosis. Zhongguo Yao Li Xue.Bao. 1992;13(2):126-130.
  2. Hemingway, S. R. and Phillipson, J. D. Proceedings: Alkaloids from S. American species of Uncaria (Rubiaceae). J.Pharm.Pharmacol. 1974;26 Suppl:113P.

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

Cat's Claw Also Interacts With Other Medications

Cat's Claw has 961 moderate known drug interactions in our database — the Bromfenac Sodium one above is one of them. If you take anything else, check it against the full list below.

Moderate 961 No known interaction 1,869 (incl. Bromfenac Sodium)
Taking anything else?

Check Another of Your Medications Against Cat's Claw

Covers the 2,830 medications we’ve checked against Cat's Claw. Pick one to open its full report.

From our Q&A

Questions About Cat's Claw or Bromfenac Sodium

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Cat's Claw or Bromfenac Sodium, 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 Bromfenac Sodium

This page covers Cat's Claw only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Bromfenac Sodium page lists 209 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Beer (major), Danshen (major), Piracetam (major), Wine (major) and Aconite (moderate).

By severity: 4 major · 186 moderate · 19 minor.

From our pharmacist’s overview on the Bromfenac Sodium page

“The typical person using bromfenac sodium drops (Prolensa, Bromsite) has just had cataract surgery, often older and often a daily supplement taker, a combination that deserves genuine care. Bromfenac is an NSAID, and 202 of the 209 ingredients here have blood-thinning or antiplatelet activity that can stack with it and make bleeding ea…”

Reviewed by 2 · Jul 18, 2026

Open the Bromfenac Sodium interaction page

One more smart check

Taking Cat's Claw as Part of a Dietary Supplement Product? Check It for Interactions

We hold 910 real supplement products containing Cat's Claw, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Cat's Claw. Your product may carry other ingredients that interact with Bromfenac Sodium too, on top of Cat's Claw — 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 Cat's Claw and Bromfenac Sodium 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 Cat's Claw
Top 25%

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

29 days ago today
Medication Bromfenac Sodium
Steady interest

#1,596 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 Cat's Claw

What is Cat's Claw?

Cat's Claw
  • Osteoarthritis and rheumatoid arthritis
  • Inflammation
  • Immune support
  • Digestive complaints
  • General wellness/tonic

Cat's claw is a South American vine traditionally used for inflammation, joint pain, and immune support. Some small studies hint it may help with arthritis symptoms, but the overall evidence is limited and not strong enough to confirm clear benefits. Talk with your pharmacist or doctor before using it, and avoid it during pregnancy and breastfeeding.

Read the full Cat's Claw monograph & all interactions
Medication

About Bromfenac Ophthalmic

What Is Bromfenac Ophthalmic Used For?

Brand names: Prolensa, Bromsite

Bromfenac ophthalmic solution is used to treat postoperative inflammation (swelling and irritation) and to reduce eye pain in patients who have had cataract surgery. It is applied directly to the eye as drops.

See full Bromfenac Ophthalmic drug information
Keep checking

Other Drugs & Cat's Claw

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

0Major
961Moderate
0Minor
1,868No known interaction
961 Moderate 1,868 No interaction
Moderate

961 interactions

Showing 60 of 961 moderate interactions — see all 961 on the Cat's Claw page.

No interaction 1,868 drugs checked — show the list

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

Showing the 60 most looked-up of 1,868 medications checked with no known interaction — see the full Cat's Claw list.

See the full Cat's Claw interactions page
See every supplement checked against Bromfenac Sodium, 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
Cat's Claw monograph › Uses, safety, and every drug interaction in one place Bromfenac Sodium supplement interactions › Every supplement checked against Bromfenac Sodium, ranked by severity Bromfenac Ophthalmic 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 Cat's Claw and Bromfenac Sodium Together: Common Questions

Can you take Cat's Claw with Bromfenac Sodium?
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.
How serious is the Cat's Claw and Bromfenac Sodium 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 Bromfenac Sodium and Cat's Claw?

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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.