or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.mefenamic acidmefenamic acid will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.natalizumabbaricitinib, natalizumab. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.nateglinidenateglinide will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.nitazoxanidenitazoxanide will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.ocrelizumabbaricitinib and ocrelizumab both increase immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.oxaprozinoxaprozin will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.penicillin G benzathinepenicillin G benzathine will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.pimecrolimusbaricitinib, pimecrolimus. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.pioglitazonepioglitazone will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.pretomanidpretomanid will increase the level or effect of baricitinib by Other (see comment). Avoid or Use Alternate Drug. In vitro studies demonstrated that pretomanid significantly inhibits OAT3; monitor for increased adverse effects and consider dosage reduction for OAT3 substrates.probenecidprobenecid will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.rilonaceptbaricitinib, rilonacept. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.rituximabbaricitinib, rituximab. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.rituximab-hyaluronidasebaricitinib, rituximab-hyaluronidase. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.rotavirus oral vaccine, livebaricitinib decreases effects of rotavirus oral vaccine, live by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Avoid use of live vaccines with baricitinib. Update immunizations in agreement with current immunization guidelines before initiating baricitinib.siltuximabbaricitinib, siltuximab. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.smallpox (vaccinia) vaccine, livebaricitinib decreases effects of smallpox (vaccinia) vaccine, live by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Avoid use of live vaccines with baricitinib. Update immunizations in agreement with current immunization guidelines before initiating baricitinib.tacrolimusbaricitinib, tacrolimus. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.telmisartantelmisartan will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.tisagenlecleucelbaricitinib, tisagenlecleucel. Either increases effects of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug.tocilizumabbaricitinib, tocilizumab. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.tofacitinibbaricitinib, tofacitinib. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.trastuzumab deruxtecanbaricitinib, trastuzumab deruxtecan. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.typhoid vaccine livebaricitinib decreases effects of typhoid vaccine live by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Avoid use of live vaccines with baricitinib. Update immunizations in agreement with current immunization guidelines before initiating baricitinib.valsartanvalsartan will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.varicella virus vaccine livebaricitinib decreases effects of varicella virus vaccine live by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Avoid use of live vaccines with baricitinib. Update immunizations in agreement with current immunization guidelines before initiating baricitinib.vedolizumabbaricitinib, vedolizumab. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.yellow fever vaccinebaricitinib decreases effects of yellow fever vaccine by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Avoid use of live vaccines with baricitinib. Update immunizations in agreement with current immunization guidelines before initiating baricitinib.zoster vaccine livebaricitinib increases effects of zoster vaccine live by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Avoid use of live vaccines with baricitinib. Update immunizations in agreement with current immunization guidelines before initiating baricitinib.Monitor Closely (5)ifosfamideifosfamide, baricitinib. Either increases effects of the other by immunosuppressive effects; risk of infection. Use Caution/Monitor.mechlorethaminemechlorethamine, baricitinib. immunosuppressive effects; risk of infection. Use Caution/Monitor. Caution should be taken in patients on concomitant immunosuppressants or with impaired immune systems because of increased risk for serious infections. .trastuzumabtrastuzumab, baricitinib. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Use Caution/Monitor. Neutropenia or febrile neutropenia incidence were increased when trastuzumab was coadministered with myelosuppressive chemotherapy. .trastuzumab deruxtecantrastuzumab deruxtecan, baricitinib. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Use Caution/Monitor. Neutropenia or febrile neutropenia incidence were increased when trastuzumab was coadministered with myelosuppressive chemotherapy. .ublituximabublituximab and baricitinib both increase immunosuppressive effects; risk of infection. Modify Therapy/Monitor Closely. Owing to potential additive immunosuppressive effects, consider duration of effect and mechanism of action of these therapies if coadministeredMinor (0)abataceptSerious - Use Alternative (1)baricitinib, abatacept. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.adalimumabSerious - Use Alternative (1)baricitinib, adalimumab. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.adenovirus types 4 and 7 live, oralSerious - Use Alternative (1)baricitinib decreases effects of adenovirus types 4 and 7 live, oral by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Avoid use of live vaccines with baricitinib. Update immunizations in agreement with current immunization guidelines before initiating baricitinib.ado-trastuzumab emtansineSerious - Use Alternative (1)baricitinib, ado-trastuzumab emtansine. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.anakinraSerious - Use Alternative (1)baricitinib, anakinra. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.axicabtagene ciloleucelSerious - Use Alternative (1)baricitinib, axicabtagene ciloleucel. Either increases effects of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug.azathioprineSerious - Use Alternative (1)baricitinib, azathioprine. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.balsalazideSerious - Use Alternative (1)balsalazide will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.BCG vaccine liveSerious - Use Alternative (1)baricitinib decreases effects of BCG vaccine live by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Avoid use of live vaccines with baricitinib. Update immunizations in agreement with current immunization guidelines before initiating baricitinib.brexucabtagene autoleucelSerious - Use Alternative (1)baricitinib, brexucabtagene autoleucel. Either increases effects of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug.canakinumabSerious - Use Alternative (1)baricitinib, canakinumab. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.certolizumab pegolSerious - Use Alternative (1)baricitinib, certolizumab pegol. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.ciltacabtagene autoleucelSerious - Use Alternative (1)baricitinib, ciltacabtagene autoleucel. Either increases effects of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug.cyclosporineSerious - Use Alternative (1)baricitinib, cyclosporine. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.deferiproneSerious - Use Alternative (1)baricitinib, deferiprone. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.diflunisalSerious - Use Alternative (1)diflunisal will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.etanerceptSerious - Use Alternative (1)baricitinib, etanercept. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.ethacrynic acidSerious - Use Alternative (1)ethacrynic acid will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.fingolimodSerious - Use Alternative (1)baricitinib, fingolimod. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.golimumabSerious - Use Alternative (1)baricitinib, golimumab. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.idecabtagene vicleucelSerious - Use Alternative (1)baricitinib, idecabtagene vicleucel. Either increases effects of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug.ifosfamideMonitor Closely (1)ifosfamide, baricitinib. Either increases effects of the other by immunosuppressive effects; risk of infection. Use Caution/Monitor.infliximabSerious - Use Alternative (1)baricitinib, infliximab. Either increases toxicity of the other by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Baricitinib is not recommended in combination with other JAK inhibitors, biologic DMARDs, or potent immunosuppressives.influenza virus vaccine quadrivalent, intranasalSerious - Use Alternative (1)baricitinib decreases effects of influenza virus vaccine quadrivalent, intranasal by immunosuppressive effects; risk of infection. Avoid or Use Alternate Drug. Avoid use of live vaccines with baricitinib. Update immunizations in agreement with current immunization guidelines before initiating baricitinib.irbesartanSerious - Use Alternative (1)irbesartan will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.ketorolacSerious - Use Alternative (1)ketorolac will increase the level or effect of baricitinib by decreasing elimination. Avoid or Use Alternate Drug. Coadministration of baricitinib with strong organic anion transporter 3 (OAT3) inhibitors is not recommended.lisocabtagene maraleucelSerious - Use Alternative (1)baricitinib, lisocabtagene maraleucel. Either increases effects of the other by immunosuppressive effects; risk of infection. Avoid or Use