Drug & supplement interaction

Coffee + Enoxaparin

Enoxaparin brand name: Lovenox.

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

Coffee has a moderate interaction with Enoxaparin. Theoretically, coffee may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.

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

Coffee and Enoxaparin

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

Moderate

ANTICOAGULANT/ANTIPLATELET DRUGS

Why this applies to Enoxaparin

Enoxaparin falls under ANTICOAGULANT/ANTIPLATELET DRUGS — the group Coffee interacts with.

Theoretically, coffee may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Coffee contains caffeine. Caffeine is reported to have antiplatelet activity. Theoretically, the caffeine in coffee might increase the risk of bleeding when used concomitantly with these agents. However, this interaction has not been reported in humans. There is some evidence that caffeinated coffee might increase the fibrinolytic activity in blood.
Severity Moderate Likelihood Unlikely Evidence D

Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans..

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

Enoxaparin (Lovenox) is a blood thinner you inject to keep dangerous clots from forming. The concern here is pretty mild: the caffeine in coffee may have a slight blood-thinning, anti-platelet effect of its own, so in theory stacking it on top of Lovenox could nudge your bleeding risk up a touch. Worth knowing, this is based only on lab and test-tube findings, and it has never actually been seen in real patients.

For most people, a normal cup or two of coffee isn't going to be a problem alongside enoxaparin. Just keep an eye out for the usual warning signs of too much thinning: easy bruising, bleeding gums, nosebleeds, pink or red urine, or dark stools. If you notice any of that, or you drink a lot of coffee, check in with your pharmacist or doctor before making changes.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Ali M, Afzal M. A potent inhibitor of thrombin stimulated platelet thromboxane formation from unprocessed tea. Prostaglandins Leukot Med 1987;27:9-13. PubMed
  2. Ardlie NG, Glew G, Schultz BG, Schwartz CJ. Inhibition and reversal of platelet aggregation by methyl xanthines. Thromb Diath Haemorrh 1967;18:670-3. DOI
  3. Samarrae WA, Truswell AS. Short-term effect of coffee on blood fibrinolytic activity in healthy adults. Atherosclerosis 1977;26:255-60. 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

Coffee Also Interacts With Other Medications

Coffee has 8 major, 466 moderate, 116 minor known drug interactions in our database — the Enoxaparin one above is one of them. If you take anything else, check it against the full list below.

Major 8 Moderate 466 Minor 116 No known interaction 2,240 (incl. Enoxaparin)
Taking anything else?

Check Another of Your Medications Against Coffee

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

Everything else you take

See Every Supplement That Interacts With Enoxaparin

This page covers Coffee only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Enoxaparin page lists 202 supplements it has a documented interaction with, worst first, each one explained.

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

By severity: 2 major · 183 moderate · 17 minor.

From our pharmacist’s overview on the Enoxaparin page

“If you are giving yourself enoxaparin (Lovenox) shots after surgery or to treat a clot, read this page with real care. All 202 supplement ingredients on file pull on the same thread, bleeding.”

Reviewed by 2 · Jul 18, 2026

Open the Enoxaparin interaction page

One more smart check

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

We hold 716 real supplement products containing Coffee, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Coffee. Your product may carry other ingredients that interact with Enoxaparin too, on top of Coffee — 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 Coffee and Enoxaparin 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 Coffee
Top 5%

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

29 days ago today
Medication Enoxaparin
Steady interest

#1,755 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 Coffee

What is Coffee?

  • Alertness and reducing fatigue
  • Mental focus and concentration
  • Athletic performance
  • Headache relief
  • Weight management

Coffee is a widely consumed beverage made from roasted coffee beans, valued mainly for its caffeine, which boosts alertness and energy. For most healthy adults, moderate coffee intake is generally safe and may have some health benefits, but too much can cause jitteriness, poor sleep, and a faster heartbeat. People who are pregnant, breastfeeding, or sensitive to caffeine should limit their intake and check with a doctor or pharmacist.

Read the full Coffee monograph & all interactions
Medication

About Enoxaparin Injection

What Is Enoxaparin Injection Used For?

Brand name: Lovenox

Enoxaparin injection is used to prevent deep vein thrombosis (DVT) — blood clots in the legs — in people having abdominal surgery, hip replacement surgery, or knee replacement surgery, and in hospitalized patients who are largely immobile due to acute illness. It is also used to treat acute DVT, with or without a pulmonary embolism (a clot in the lungs), both in the hospital and at home.

It is also used alongside aspirin to reduce dangerous complications of unstable angina and non-Q-wave heart attack, and to treat acute STEMI (a severe type of heart attack involving full blockage of a coronary artery) in patients who receive clot-dissolving therapy or undergo a procedure to open the blocked artery (PCI).

See full Enoxaparin Injection drug information
Keep checking

Other Drugs & Coffee

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

8Major
466Moderate
116Minor
2,239No known interaction
8 Major 466 Moderate 116 Minor 2,239 No interaction
Major

8 interactions

Moderate

466 interactions

Showing 60 of 466 moderate interactions — see all 466 on the Coffee page.

Minor

116 interactions

Showing 60 of 116 minor interactions — see all 116 on the Coffee page.

No interaction 2,239 drugs checked — show the list

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

Showing the 60 most looked-up of 2,239 medications checked with no known interaction — see the full Coffee list.

See the full Coffee interactions page
See every supplement checked against Enoxaparin, 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
Coffee monograph › Uses, safety, and every drug interaction in one place Enoxaparin supplement interactions › Every supplement checked against Enoxaparin, ranked by severity Enoxaparin Injection 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 Coffee and Enoxaparin Together: Common Questions

Can you take Coffee with Enoxaparin?
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 Coffee and Enoxaparin 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 Enoxaparin and Coffee?

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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.