Probenecid interactions

Probenecid has 111 documented interactions across the FDA labels and fact sheets we index: 27 major, 64 moderate, 18 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.

Interactions from the label

Major interactions (27)

  • Amoxicillin and clavulanatepenicillin antibioticMajor

    Co-administration with probenecid is not recommended. (Amoxicillin and clavulanate label, Drug interactions)

  • AspirinNSAIDMajor

    In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • Aspirin and dipyridamoleantiplatelet agentMajor

    In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • BalsalazidesalicylateMajor

    In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • Bismuth subsalicylatesalicylateMajor

    In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • Bumetanideloop diureticMajor

    Thus, probenecid should not be administered concurrently with bumetanide. (Bumetanide label, Drug interactions)

  • In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • CefazolincephalosporinMajor

    Co-administration of probenecid with Cefazolin for Injection is not recommended. (Cefazolin label, Drug interactions)

  • CefotaximecephalosporinMajor

    Administration of cefotaxime in excess of 6 grams/day should be avoided in patients receiving probenecid (see CLINICAL PHARMACOLOGY, Drug Interactions ). (Cefotaxime label, Drug interactions)

  • CefuroximecephalosporinMajor

    Coadministration with probenecid increases systemic exposure to cefuroxime axetil and is therefore not recommended. (Cefuroxime label, Drug interactions)

  • CephalexincephalosporinMajor

    Co-administration of probenecid with cephalexin for oral suspension is not recommended. (Cephalexin label, Drug interactions)

  • CidofovirantiviralMajor

    TO REDUCE POSSIBLE NEPHROTOXICITY, INTRAVENOUS PREHYDRATION WITH NORMAL SALINE AND ADMINISTRATION OF PROBENECID MUST BE USED WITH EACH CIDOFOVIR INFUSION. (Cidofovir label, Boxed warning)

  • Deferiproneiron supplementMajor

    Effect of Other Drugs on FERRIPROX UDP-Glucuronosyltransferases (UGT) Avoid use of UGT1A6 inhibitors (e.g., diclofenac, probenecid, or silymarin (milk thistle)) with FERRIPROX [ see Dosage and Administration ( 2.2 ) , Adverse Reactions ( 6.1 ), Clinical Pharmacology ( 12.3 ) ] . (Deferiprone label, Drug interactions)

  • DiflunisalNSAIDMajor

    In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • ErtapenemantibioticMajor

    Co-administration with probenecid inhibits the renal excretion of ertapenem and is therefore not recommended. (Ertapenem label, Drug interactions)

  • Therefore, it is not recommended that probenecid be given concomitantly with PRIMAXIN. (Imipenem and cilastatin label, Drug interactions)

  • KetoprofenNSAIDMajor

    Therefore, the combination of ketoprofen and probenecid is not recommended. (Ketoprofen label, Warnings and precautions)

  • KetorolacNSAIDMajor

    The concomitant use of ketorolac tromethamine and probenecid is contraindicated. (Ketorolac label, Contraindications)

  • In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • MeropenemantibioticMajor

    Co-administration of Meropenem for injection with probenecid inhibits renal excretion of meropenem and is therefore not recommended ( 7.1 ) (Meropenem label, Drug interactions)

  • MesalaminesalicylateMajor

    In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • Piperacillin and tazobactampenicillin antibioticMajor

    Probenecid prolongs the half-lives of piperacillin and tazobactam and should not be co-administered with Piperacillin and Tazobactam for Injection and Sodium Chloride Injection unless the benefit outweighs the risk. (Piperacillin and tazobactam label, Drug interactions)

  • PralatrexateantimetaboliteMajor

    Avoid coadministration with probenecid or nonsteroidal anti-inflammatory drugs. (Pralatrexate label, Drug interactions)

  • SalsalateNSAIDMajor

    In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

  • SulfasalazinesulfonamideMajor

    In patients on probenecid the use of salicylates in either small or large doses is contraindicated because it antagonizes the uricosuric action of probenecid. (Probenecid label, Warnings)

Moderate interactions (64)

  • In patients on probenecid who require a mild analgesic agent the use of acetaminophen rather than small doses of salicylates would be preferred. (Probenecid label, Warnings)

  • In patients on probenecid who require a mild analgesic agent the use of acetaminophen rather than small doses of salicylates would be preferred. (Probenecid label, Warnings)

  • In patients on probenecid who require a mild analgesic agent the use of acetaminophen rather than small doses of salicylates would be preferred. (Probenecid label, Warnings)

  • Acetazolamidecarbonic anhydrase inhibitorModerate

    Probenecid produces an insignificant increase in free sulfonamide plasma concentrations but a significant increase in total sulfonamide plasma levels. (Probenecid label, Drug interactions)

  • AcyclovirantiviralModerate

    Drug Interactions Coadministration of probenecid with intravenous acyclovir has been shown to increase the mean acyclovir half-life and the area under the concentration-time curve. (Acyclovir label, Drug interactions)

  • Amoxicillinpenicillin antibioticModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • Ampicillinpenicillin antibioticModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • Ampicillin and sulbactampenicillin antibioticModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • BaricitinibJAK inhibitorModerate

    In patients taking strong Organic Anion Transporter 3 (OAT3) inhibitors (e.g., probenecid) the recommended dosage should be reduced. (Baricitinib label, Drug interactions)

  • Brinzolamidecarbonic anhydrase inhibitorModerate

    Probenecid produces an insignificant increase in free sulfonamide plasma concentrations but a significant increase in total sulfonamide plasma levels. (Probenecid label, Drug interactions)

  • Bromocriptinedopamine agonistModerate

    Therefore, CYCLOSET may increase the unbound fraction of other concomitantly used highly protein-bound therapies (e.g., salicylates, sulfonamides, chloramphenicol and probenecid), which may alter their effectiveness and risk for side effects. (Bromocriptine label, Drug interactions)

  • Butalbital and acetaminophenbarbiturateModerate

    In patients on probenecid who require a mild analgesic agent the use of acetaminophen rather than small doses of salicylates would be preferred. (Probenecid label, Warnings)

  • In patients on probenecid who require a mild analgesic agent the use of acetaminophen rather than small doses of salicylates would be preferred. (Probenecid label, Warnings)

  • In patients on probenecid who require a mild analgesic agent the use of acetaminophen rather than small doses of salicylates would be preferred. (Probenecid label, Warnings)

  • CabozantinibModerate

    Monitor patients for increased toxicity when MRP2 inhibitors (e.g., abacavir, adefovir, cidofovir, furosemide, lamivudine, nevirapine, ritonavir, probenecid, saquinavir, and tenofovir) are co-administered with COMETRIQ [see Clinical Pharmacology ( 12.3 )] . (Cabozantinib label, Drug interactions)

  • CefaclorcephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CefadroxilcephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CefdinircephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CefepimecephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CefiximecephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CefotetancephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CefoxitincephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CefpodoximecephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CefprozilcephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CeftarolinecephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CeftazidimecephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CeftriaxonecephalosporinModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • CiprofloxacinfluoroquinoloneModerate

    Decrease ciprofloxacin absorption, resulting in lower serum and urine levels Probenecid Use with caution (interferes with renal tubular secretion of ciprofloxacin and increases ciprofloxacin serum levels) Potentiation of ciprofloxacin toxicity may occur. (Ciprofloxacin label, Drug interactions)

  • Dichlorphenamidecarbonic anhydrase inhibitorModerate

    Probenecid produces an insignificant increase in free sulfonamide plasma concentrations but a significant increase in total sulfonamide plasma levels. (Probenecid label, Drug interactions)

  • Dicloxacillinpenicillin antibioticModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • Dorzolamidecarbonic anhydrase inhibitorModerate

    Probenecid produces an insignificant increase in free sulfonamide plasma concentrations but a significant increase in total sulfonamide plasma levels. (Probenecid label, Drug interactions)

  • Dorzolamide and timololcarbonic anhydrase inhibitorModerate

    Probenecid produces an insignificant increase in free sulfonamide plasma concentrations but a significant increase in total sulfonamide plasma levels. (Probenecid label, Drug interactions)

  • FamciclovirantiviralModerate

    Probenecid: May increase penciclovir levels. (Famciclovir label, Drug interactions)

  • GanciclovirantiviralModerate

    Probenecid ↑Ganciclovir Ganciclovir for Injection dose may need to be reduced. (Ganciclovir label, Drug interactions)

  • GlimepiridesulfonylureaModerate

    Probenecid may prolong or enhance the action of oral sulfonylureas and thereby increase the risk of hypoglycemia. (Probenecid label, Drug interactions)

  • GlipizidesulfonylureaModerate

    Probenecid may prolong or enhance the action of oral sulfonylureas and thereby increase the risk of hypoglycemia. (Probenecid label, Drug interactions)

  • Glipizide and metforminsulfonylureaModerate

    Probenecid may prolong or enhance the action of oral sulfonylureas and thereby increase the risk of hypoglycemia. (Probenecid label, Drug interactions)

  • GlyburidesulfonylureaModerate

    Probenecid may prolong or enhance the action of oral sulfonylureas and thereby increase the risk of hypoglycemia. (Probenecid label, Drug interactions)

  • Glyburide and metforminsulfonylureaModerate

    Probenecid may prolong or enhance the action of oral sulfonylureas and thereby increase the risk of hypoglycemia. (Probenecid label, Drug interactions)

  • In patients on probenecid who require a mild analgesic agent the use of acetaminophen rather than small doses of salicylates would be preferred. (Probenecid label, Warnings)

  • IndomethacinNSAIDModerate

    Probenecid Clinical Impact: When indomethacin is given to patients receiving probenecid, the plasma levels of indomethacin are likely to be increased. (Indomethacin label, Drug interactions)

  • KetamineCNS depressantModerate

    In addition, ketamine and thiopental anesthesia were significantly prolonged in rats receiving probenecid. (Probenecid label, Drug interactions)

  • LevetiracetamanticonvulsantModerate

    Renal clearance of ucb L057 in the presence of probenecid decreased 60%, probably related to competitive inhibition of tubular secretion of ucb L057. (Levetiracetam label, Drug interactions)

  • LevofloxacinfluoroquinoloneModerate

    However, these changes do not warrant dosage adjustment for Levofloxacin in 5% Dextrose Injection when probenecid or cimetidine is co-administered. (Levofloxacin label, Drug interactions)

  • Methazolamidecarbonic anhydrase inhibitorModerate

    Probenecid produces an insignificant increase in free sulfonamide plasma concentrations but a significant increase in total sulfonamide plasma levels. (Probenecid label, Drug interactions)

  • MethotrexateimmunosuppressantModerate

    Probenecid increases plasma concentrations of methotrexate in both animals and humans. (Probenecid label, Warnings)

  • Nafcillinpenicillin antibioticModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • NaproxenNSAIDModerate

    Probenecid Clinical Impact: Probenecid given concurrently increases naproxen anion plasma levels and extends its plasma half-life significantly. (Naproxen label, Drug interactions)

  • Oxacillinpenicillin antibioticModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • In patients on probenecid who require a mild analgesic agent the use of acetaminophen rather than small doses of salicylates would be preferred. (Probenecid label, Warnings)

  • Penicillin Gpenicillin antibioticModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • Penicillin Vpenicillin antibioticModerate

    Drug Interactions When probenecid is used to elevate plasma concentrations of penicillin or other beta-lactams, or when such drugs are given to patients taking probenecid therapeutically, high plasma concentrations of the other drug may increase the incidence of adverse reactions associated with that drug. (Probenecid label, Drug interactions)

  • Pioglitazone and glimepiridethiazolidinedioneModerate

    Probenecid may prolong or enhance the action of oral sulfonylureas and thereby increase the risk of hypoglycemia. (Probenecid label, Drug interactions)

  • RifampinantibioticModerate

    Concomitant use with probenecid and cotrimoxazole increases the concentration of rifampin which may increase the risk of rifampin toxicities. (Rifampin label, Drug interactions)

  • Silver sulfadiazinesulfonamideModerate

    Probenecid produces an insignificant increase in free sulfonamide plasma concentrations but a significant increase in total sulfonamide plasma levels. (Probenecid label, Drug interactions)

  • Probenecid : May inhibit renal excretion of metabolites of PHEBURANE including phenylacetate and phenylacetylglutamine; monitor for potential neurotoxicity. (Sodium phenylbutyrate label, Drug interactions)

  • SulfadiazinesulfonamideModerate

    Probenecid produces an insignificant increase in free sulfonamide plasma concentrations but a significant increase in total sulfonamide plasma levels. (Probenecid label, Drug interactions)

  • Probenecid produces an insignificant increase in free sulfonamide plasma concentrations but a significant increase in total sulfonamide plasma levels. (Probenecid label, Drug interactions)

  • SulindacNSAIDModerate

    Probenecid given concomitantly with sulindac had only a slight effect on plasma sulfide levels, while plasma levels of sulindac and sulfone were increased. (Probenecid label, Drug interactions)

  • Probenecid Clinical Impact: Probenecid given concurrently increases naproxen anion plasma levels and extends its plasma half-life significantly. (Sumatriptan and naproxen label, Drug interactions)

  • Torsemideloop diureticModerate

    Organic Anion Drugs Coadministration of organic anion drugs (e.g., probenecid) that undergo significant renal tubular secretion have the potential to reduce secretion of torsemide into the proximal tubule and thereby decreases the diuretic activity of torsemide. (Torsemide label, Drug interactions)

  • In patients on probenecid who require a mild analgesic agent the use of acetaminophen rather than small doses of salicylates would be preferred. (Probenecid label, Warnings)

  • ValganciclovirantiviralModerate

    Didanosine ↔ Ganciclovir ↑ Didanosine Patients should be closely monitored for didanosine toxicity (e.g., pancreatitis) Probenecid ↑ Ganciclovir Valganciclovir hydrochloride dose may need to be reduced. (Valganciclovir label, Drug interactions)

  • ZonisamideanticonvulsantModerate

    Probenecid produces an insignificant increase in free sulfonamide plasma concentrations but a significant increase in total sulfonamide plasma levels. (Probenecid label, Drug interactions)

Minor mentions (18)

  • Allopurinolxanthine oxidase inhibitorMinor

    Falsely high readings for theophylline have been reported in an in vitro study, using the Schack and Waxler technique, when therapeutic concentrations of theophylline and probenecid were added to human plasma. (Probenecid label, Drug interactions)

  • AminophyllinemethylxanthineMinor

    Falsely high readings for theophylline have been reported in an in vitro study, using the Schack and Waxler technique, when therapeutic concentrations of theophylline and probenecid were added to human plasma. (Probenecid label, Drug interactions)

  • These include probenecid, cholestyramine, and some antibiotics (e.g., erythromycin, rifampicin, ampicillin and chloramphenicol). (Carbidopa, levodopa, and entacapone label, Drug interactions)

  • WARNINGS Exacerbation of gout following therapy with probenecid may occur; in such cases colchicine or other appropriate therapy is advisable. (Probenecid label, Warnings)

  • These include probenecid, cholestyramine, and some antibiotics (e.g., erythromycin, rifampicin, ampicillin, and chloramphenicol). (Entacapone label, Precautions)

  • Ergotamine and caffeineergot alkaloidMinor

    Falsely high readings for theophylline have been reported in an in vitro study, using the Schack and Waxler technique, when therapeutic concentrations of theophylline and probenecid were added to human plasma. (Probenecid label, Drug interactions)

  • Febuxostatxanthine oxidase inhibitorMinor

    Falsely high readings for theophylline have been reported in an in vitro study, using the Schack and Waxler technique, when therapeutic concentrations of theophylline and probenecid were added to human plasma. (Probenecid label, Drug interactions)

  • GabapentinanticonvulsantMinor

    Probenecid Probenecid is a blocker of renal tubular secretion. (Gabapentin label, Drug interactions)

  • Probenecid : May affect renal excretion of metabolites of glycerol phenylbutyrate, including phenylacetylglutamine (PAGN) and PAA. (Glycerol phenylbutyrate label, Drug interactions)

  • LorazepambenzodiazepineMinor

    These include agents such as indomethacin, acetaminophen, naproxen, ketoprofen, meclofenamate, lorazepam, and rifampin. (Probenecid label, Drug interactions)

  • These include agents such as indomethacin, acetaminophen, naproxen, ketoprofen, meclofenamate, lorazepam, and rifampin. (Probenecid label, Drug interactions)

  • NitrofurantoinantibioticMinor

    Uricosuric Drugs Uricosuric drugs, such as probenecid and sulfinpyrazone, can inhibit renal tubular secretion of nitrofurantoin. (Nitrofurantoin label, Drug interactions)

  • OfloxacinfluoroquinoloneMinor

    Probenecid The concomitant use of probenecid with certain other quinolones has been reported to affect renal tubular secretion. (Ofloxacin label, Drug interactions)

  • PentoxifyllinemethylxanthineMinor

    Falsely high readings for theophylline have been reported in an in vitro study, using the Schack and Waxler technique, when therapeutic concentrations of theophylline and probenecid were added to human plasma. (Probenecid label, Drug interactions)

  • Prazosinalpha blockerMinor

    …hypoglycemics–insulin, chlorpropamide, phenformin, tolazamide, and tolbutamide; (3) tranquilizers and sedatives–chlordiazepoxide, diazepam, and phenobarbital; (4) antigout–allopurinol, colchicine, and probenecid; (5) antiarrhythmics–procainamide, propranolol (see WARNINGS however), and quinidine; and (6) analgesics, antipyretics and anti-inflammatories–propoxyphene, aspirin, indomethacin,… (Prazosin label, Drug interactions)

  • PyrazinamideantibioticMinor

    The uricosuric action of probenecid is also antagonized by pyrazinamide. (Probenecid label, Drug interactions)

  • Probenecid is known to inhibit the renal transport of many organic compounds, including aminohippuric acid, and may affect renal excretion of phenylacetylglutamine and hippurate. (Sodium phenylacetate and sodium benzoate label, Drug interactions)

  • TheophyllinemethylxanthineMinor

    Falsely high readings for theophylline have been reported in an in vitro study, using the Schack and Waxler technique, when therapeutic concentrations of theophylline and probenecid were added to human plasma. (Probenecid label, Drug interactions)

No significant interaction reported (2)

  • GentamicinaminoglycosideNo interaction

    Probenecid does not affect renal tubular transport of gentamicin. (Gentamicin label, Drug interactions)

  • MycophenolateimmunosuppressantNo interaction

    Examples Acyclovir, ganciclovir, probenecid, valacyclovir, valganciclovir Combination Oral Contraceptives Clinical Impact Concomitant use with mycophenolate mofetil decreased the systemic exposure to levonorgestrel, but did not affect the systemic exposure to ethinylestradiol [see Clinical Pharmacology ( 12.3 )], which may result in reduced combination oral contraceptive… (Mycophenolate 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.