Amoxicillin and clavulanate interactions

Amoxicillin and clavulanate (Augmentin), a penicillin antibiotic has 57 documented interactions across the FDA labels and fact sheets we index: 19 major, 33 moderate, 3 minor, and 2 where a label reports no significant interaction. Each entry below quotes the sentence behind it. This drug page is a starting point, not a verdict for your situation.

Major interactions (19)

  • Amoxicillinpenicillin antibioticMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • Ampicillinpenicillin antibioticMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • Azithromycinmacrolide antibioticMajor

    • Cardiovascular Death: Some observational studies have shown an approximately two-fold increased short-term potential risk of acute cardiovascular death in adults exposed to azithromycin relative to other antibacterial drugs, including amoxicillin. (Azithromycin label, Warnings and precautions)

  • CefadroxilcephalosporinMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • CefdinircephalosporinMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • CefiximecephalosporinMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • CefpodoximecephalosporinMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • CefuroximecephalosporinMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • CephalexincephalosporinMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • Dicloxacillinpenicillin antibioticMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • Doxycyclinetetracycline antibioticMajor

    Avoid co-administration of tetracyclines with penicillin. (Doxycycline label, Drug interactions)

  • Esomeprazoleproton pump inhibitorMajor

    • For information about contraindications of amoxicillin and clarithromycin, indicated in combination with NEXIUM for H. pylori eradication to reduce the risk of duodenal ulcer recurrence, refer to the Contraindications section of the respective prescribing information. (Esomeprazole label, Contraindications)

  • Lansoprazoleproton pump inhibitorMajor

    For information about contraindications of antibacterial agents (clarithromycin and amoxicillin) indicated in combination with PREVACID or PREVACID SoluTab, refer to the Contraindications section of their prescribing information. (Lansoprazole label, Contraindications)

  • Minocyclinetetracycline antibioticMajor

    Penicillin Because bacteriostatic drugs may interfere with the bactericidal action of penicillin, avoid giving EMROSI in conjunction with penicillin. (Minocycline label, Drug interactions)

  • Omeprazoleproton pump inhibitorMajor

    • For information about contraindications of antibacterial agents (clarithromycin and amoxicillin) indicated in combination with PRILOSEC, refer to the CONTRAINDICATIONS section of their package inserts. (Omeprazole label, Contraindications)

  • Penicillin Gpenicillin antibioticMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • Penicillin Vpenicillin antibioticMajor

    History of a serious hypersensitivity reaction (e.g., anaphylaxis or Stevens-Johnson syndrome) to AUGMENTIN or to other beta‑lactams (e.g., penicillins or cephalosporins). (Amoxicillin and clavulanate label, Contraindications)

  • Rabeprazoleproton pump inhibitorMajor

    For information about contraindications of antibacterial agents (clarithromycin and amoxicillin) indicated in combination with ACIPHEX delayed-release tablets, refer to the Contraindications section of their package inserts. (Rabeprazole label, Contraindications)

  • Tetracyclinetetracycline antibioticMajor

    Drug Interactions Since bacteriostatic drugs may interfere with the bactericidal action of penicillin, it is advisable to avoid giving tetracycline in conjunction with penicillin or other bactericidal antibacterials. (Tetracycline label, Drug interactions)

Moderate interactions (33)

  • Allopurinolxanthine oxidase inhibitorModerate

    Co-administration with allopurinol increases the risk of rash. (Amoxicillin and clavulanate label, Drug interactions)

  • ApixabananticoagulantModerate

    Concomitant use Amoxicillin and Clavulanate Potassium Extended Release Tablets and oral anticoagulants may increase the prolongation of prothrombin time. (Amoxicillin and clavulanate label, Drug interactions)

  • Bisoprolol and hydrochlorothiazidebeta blockerModerate

    Risk factors for developing acute angle-closure glaucoma may include a history of sulfonamide or penicillin allergy. (Bisoprolol and hydrochlorothiazide label, Warnings)

  • Cholestyraminebile acid sequestrantModerate

    Drug Interactions Cholestyramine for Oral Suspension USP may delay or reduce the absorption of concomitant oral medication such as phenylbutazone, warfarin, thiazide diuretics (acidic), or propranolol (basic), as well as tetracycline, penicillin G, phenobarbital, thyroid and thyroxine preparations, estrogens and progestins, and digitalis. (Cholestyramine label, Drug interactions)

  • Conjugated estrogensestrogenModerate

    Amoxicillin and Clavulanate Potassium Extended Release Tablets may reduce efficacy of oral contraceptives. (Amoxicillin and clavulanate label, Drug interactions)

  • DabigatrananticoagulantModerate

    Concomitant use Amoxicillin and Clavulanate Potassium Extended Release Tablets and oral anticoagulants may increase the prolongation of prothrombin time. (Amoxicillin and clavulanate label, Drug interactions)

  • Drospirenone and ethinyl estradioloral contraceptiveModerate

    Amoxicillin and Clavulanate Potassium Extended Release Tablets may reduce efficacy of oral contraceptives. (Amoxicillin and clavulanate label, Drug interactions)

  • EdoxabananticoagulantModerate

    Concomitant use Amoxicillin and Clavulanate Potassium Extended Release Tablets and oral anticoagulants may increase the prolongation of prothrombin time. (Amoxicillin and clavulanate label, Drug interactions)

  • EnoxaparinanticoagulantModerate

    Concomitant use Amoxicillin and Clavulanate Potassium Extended Release Tablets and oral anticoagulants may increase the prolongation of prothrombin time. (Amoxicillin and clavulanate label, Drug interactions)

  • EstradiolestrogenModerate

    Following administration of amoxicillin to pregnant women, a transient decrease in plasma concentration of total conjugated estriol, estriol-glucuronide, conjugated estrone, and estradiol has been noted. (Amoxicillin and clavulanate label, Drug interactions)

  • FondaparinuxanticoagulantModerate

    Concomitant use Amoxicillin and Clavulanate Potassium Extended Release Tablets and oral anticoagulants may increase the prolongation of prothrombin time. (Amoxicillin and clavulanate label, Drug interactions)

  • HeparinanticoagulantModerate

    Concomitant use Amoxicillin and Clavulanate Potassium Extended Release Tablets and oral anticoagulants may increase the prolongation of prothrombin time. (Amoxicillin and clavulanate label, Drug interactions)

  • Hydrochlorothiazidethiazide diureticModerate

    Risk factors for developing acute angle-closure glaucoma may include a history of sulfonamide or penicillin allergy. (Hydrochlorothiazide label, Warnings and precautions)

  • LeflunomideimmunosuppressantModerate

    In patients taking ARAVA, exposure of drugs which are OAT3 substrates (e.g., cefaclor, cimetidine, ciprofloxacin, penicillin G, ketoprofen, furosemide, methotrexate, zidovudine) may be increased. (Leflunomide label, Drug interactions)

  • LevonorgestrelprogestinModerate

    Amoxicillin and Clavulanate Potassium Extended Release Tablets may reduce efficacy of oral contraceptives. (Amoxicillin and clavulanate label, Drug interactions)

  • Levonorgestrel and ethinyl estradioloral contraceptiveModerate

    Amoxicillin and Clavulanate Potassium Extended Release Tablets may reduce efficacy of oral contraceptives. (Amoxicillin and clavulanate label, Drug interactions)

  • Lisinopril and hydrochlorothiazideACE inhibitorModerate

    Risk factors for developing acute angle-closure glaucoma may include a history of sulfonamide or penicillin allergy. (Lisinopril and hydrochlorothiazide label, Warnings)

  • Losartan and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Risk factors for developing acute angle-closure glaucoma may include a history of sulfonamide or penicillin allergy. (Losartan and hydrochlorothiazide label, Warnings and precautions)

  • MedroxyprogesteroneprogestinModerate

    Amoxicillin and Clavulanate Potassium Extended Release Tablets may reduce efficacy of oral contraceptives. (Amoxicillin and clavulanate label, Drug interactions)

  • MegestrolprogestinModerate

    Amoxicillin and Clavulanate Potassium Extended Release Tablets may reduce efficacy of oral contraceptives. (Amoxicillin and clavulanate label, Drug interactions)

  • MethotrexateimmunosuppressantModerate

    Effect of Other Drugs on XATMEP Oral Antibiotics Penicillins may reduce the renal clearance of methotrexate; increased serum concentrations of methotrexate with concomitant hematologic and gastrointestinal toxicity have been observed with methotrexate. (Methotrexate label, Drug interactions)

  • MycophenolateimmunosuppressantModerate

    Examples Cyclosporine A, trimethoprim/sulfamethoxazole, bile acid sequestrants (cholestyramine), rifampin as well as aminoglycoside, cephalosporin, fluoroquinolone and penicillin classes of antimicrobials Drugs Modulating Glucuronidation Clinical Impact Concomitant use with drugs inducing glucuronidation decreases MPA systemic exposure, potentially reducing MYHIBBIN… (Mycophenolate label, Drug interactions)

  • NorethindroneprogestinModerate

    Amoxicillin and Clavulanate Potassium Extended Release Tablets may reduce efficacy of oral contraceptives. (Amoxicillin and clavulanate label, Drug interactions)

  • Norethindrone and ethinyl estradioloral contraceptiveModerate

    Amoxicillin and Clavulanate Potassium Extended Release Tablets may reduce efficacy of oral contraceptives. (Amoxicillin and clavulanate label, Drug interactions)

  • Norgestimate and ethinyl estradioloral contraceptiveModerate

    Amoxicillin and Clavulanate Potassium Extended Release Tablets may reduce efficacy of oral contraceptives. (Amoxicillin and clavulanate label, Drug interactions)

  • ProgesteroneprogestinModerate

    Amoxicillin and Clavulanate Potassium Extended Release Tablets may reduce efficacy of oral contraceptives. (Amoxicillin and clavulanate label, Drug interactions)

  • RivaroxabananticoagulantModerate

    Concomitant use Amoxicillin and Clavulanate Potassium Extended Release Tablets and oral anticoagulants may increase the prolongation of prothrombin time. (Amoxicillin and clavulanate label, Drug interactions)

  • Spironolactone and hydrochlorothiazidealdosterone antagonistModerate

    Risk factors for developing acute angle-closure glaucoma may include a history of sulfonamide or penicillin allergy. (Spironolactone and hydrochlorothiazide label, Warnings)

  • TeriflunomideimmunosuppressantModerate

    In patients taking AUBAGIO, exposure of drugs which are OAT3 substrates (e.g., cefaclor, cimetidine, ciprofloxacin, penicillin G, ketoprofen, furosemide, methotrexate, zidovudine) may be increased. (Teriflunomide label, Drug interactions)

  • Triamterenepotassium-sparing diureticModerate

    …from blood bank (may contain up to 30 mEq of potassium per liter of plasma or up to 65 mEq per liter of whole blood when stored for more than 10 days); low-salt milk (may contain up to 60 mEq of potassium per liter); potassium-containing medications (such as parenteral penicillin G potassium); salt substitutes (most contain substantial amounts of potassium). (Triamterene label, Drug interactions)

  • Triamterene and hydrochlorothiazidepotassium-sparing diureticModerate

    Risk factors for developing acute angle-closure glaucoma may include a history of sulfonamide or penicillin allergy. (Triamterene and hydrochlorothiazide label, Warnings)

  • Valsartan and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Risk factors for developing acute angle-closure glaucoma may include a history of sulfonamide or penicillin allergy. (Valsartan and hydrochlorothiazide label, Warnings and precautions)

  • WarfarinanticoagulantModerate

    Concomitant use Amoxicillin and Clavulanate Potassium Extended Release Tablets and oral anticoagulants may increase the prolongation of prothrombin time. (Amoxicillin and clavulanate label, Drug interactions)

Minor mentions (3)

  • Erythromycinmacrolide antibioticMinor

    Infants born to women treated during pregnancy with oral erythromycin for early syphilis should be treated with an appropriate penicillin regimen. (Erythromycin label, Warnings)

  • NeomycinaminoglycosideMinor

    Oral neomycin inhibits the gastrointestinal absorption of penicillin V, oral vitamin B-12, methotrexate and 5-fluorouracil. (Neomycin label, Drug interactions)

  • Raloxifeneselective estrogen receptor modulatorMinor

    Other Concomitant Medications EVISTA can be concomitantly administered with ampicillin, amoxicillin, antacids, corticosteroids, and digoxin [see Clinical Pharmacology ( 12.3 )] . (Raloxifene label, Drug interactions)

No significant interaction reported (2)

  • OseltamivirantiviralNo interaction

    Drugs Without Clinically Significant Drug Interaction with TAMIFLU No dose adjustments are needed for either oseltamivir or the concomitant drug when coadministering oseltamivir with amoxicillin, acetaminophen, aspirin, cimetidine, antacids (magnesium and aluminum hydroxides and calcium carbonates), rimantadine, amantadine, or warfarin [see Clinical Pharmacology… (Oseltamivir label, Drug interactions)

  • TheophyllinemethylxanthineNo interaction

    …have been documented not to interact with theophylline or drugs that produce no clinically significant interaction with theophylline.* albuterol, systemic and inhaled mebendazole amoxicillin medroxyprogesterone ampicillin, with or without methylprednisolone sulbactam metronidazole atenolol metoprolol azithromycin nadolol caffeine, dietary ingestion nifedipine… (Theophylline label, Drug interactions)

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Not medical advice. Severity reflects the label's wording, not your circumstances. A "major" flag can be routine under supervision and a "minor" one can matter at high doses. Ask a pharmacist.