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Which drugs are most reported with Encephalitis?

Last recalculated 2026-09-14T18:28:35.993900+00:00 · 6,808 reports · 311 co-occurring drugs

As of the last recalculation, Encephalitis appears in 6,808 FAERS reports alongside 311 co-occurring drug terms. The strongest observed disproportionality signal is ATEZOLIZUMAB (PRR 22.3).

Important: FAERS is a spontaneous, voluntary, unverified reporting system. PRR and ROR identify reporting patterns for investigation; they are not incidence rates and do not establish causation.

Drug	Co-reports	PRR	ROR
Atezolizumab	273	22.3	22.5
Ganciclovir Sodium	61	17.8	17.9
Ganciclovir	58	17.5	17.6
Fludarabine Phosphate	209	16.7	16.8
Pyrazinamide	47	15.4	15.5
Ampicillin	41	15.2	15.3
Ampicillin Sodium	41	15.2	15.3
Ipilimumab	196	14.3	14.3
Isoniazid	73	13.9	14.0
Thiotepa	43	13.8	13.9
Nivolumab	388	13.0	13.0
Amphotericin B	52	12.8	12.8
Pembrolizumab	384	11.8	11.8
Mercaptopurine	66	11.7	11.8
Phenytoin	78	11.5	11.6
Durvalumab	74	11.2	11.3
Alemtuzumab	69	11.0	11.0
Busulfan	53	10.4	10.4
Brinzolamide	29	10.2	10.3
Ceftriaxone	107	10.1	10.1
Abacavir Sulfate	31	9.8	9.8
Ceftriaxone Sodium	119	9.6	9.7
Mesna Injection	25	9.3	9.3
Cytarabine	177	9.2	9.2
Mesna	25	9.1	9.1
Everolimus Tablets	46	8.4	8.5
Vincristine Sulfate	80	8.4	8.5
Meropenem	87	8.4	8.4
Melphalan Hydrochloride	68	8.4	8.4
Melphalan	61	8.3	8.3
Mycophenilic Acid	55	8.2	8.2
Mycophenolate Mofetil	346	8.2	8.2
Mycophenolate Mofetil Hydrochloride	346	8.1	8.2
Pegaspargase	32	8.0	8.0
Efavirenz	29	8.0	8.0
Tacrolimus Ointment 0.1%	310	7.9	7.9
Human Immunoglobulin G	53	7.9	7.9
Tacrolimus Extended-Release Capsules	310	7.9	7.9
Basiliximab	30	7.8	7.8
Zidovudine	34	7.8	7.8
Lopinavir And Ritonavir	34	7.7	7.7
Anti-Thymocyte Globulin (Rabbit)	20	7.6	7.6
Tacrolimus	370	7.6	7.6
Rifampin	36	7.6	7.6
Atazanavir	35	7.5	7.5
Lamivudine Oral	61	7.4	7.4
Micafungin Sodium	20	7.2	7.2
Magnesium Sulfate In Water For	30	7.2	7.2
Magnesium Sulfate Heptahydrate	30	7.1	7.1
Magnesium Sulfate	30	7.1	7.1
Acyclovir	250	6.9	6.9
Lacosamide	83	6.9	6.9
Itraconazole	26	6.8	6.8
Etoposide	160	6.8	6.8
Sirolimus	29	6.6	6.6
Lamivudine	66	6.6	6.6
Valganciclovir Hydrochloride Powder,	26	6.5	6.6
Cyclophosphamide Injection, Solution	360	6.5	6.5
Cyclophosphamide	360	6.5	6.5
Cyclophosphamide For Injection	360	6.5	6.5
Lenvatinib	69	6.5	6.5
Fluconazole	144	6.4	6.4
Daspone	20	6.3	6.3
Dapsone Gel, 5%	20	6.3	6.3
Prednisolone	354	6.3	6.3
Prednisolone Oral	354	6.3	6.3
Prednisolone Oral Solution	354	6.3	6.3
Ritonavir 100 Mg	30	6.2	6.2
Methylprednisolone	268	6.1	6.1
Rifampicin	20	6.1	6.1
Filgrastim	73	6.0	6.0
Mycophenolic Acid	62	6.0	6.0
Voriconazole Injection	42	5.9	6.0
Dapsone	20	5.7	5.8
Anakinra	31	5.7	5.7
Tenofovir Disoproxil Fumarate Tablets	16	5.7	5.7
Midazolam	46	5.6	5.6
Standardized Senna Concentrate	23	5.6	5.6
Bendamustine Hcl	28	5.5	5.5
Valganciclovir	34	5.5	5.5
Valganciclovir Hydrochloride	34	5.5	5.5
Acetylcysteine	17	5.5	5.5
Cefepime Hydrochloride	29	5.5	5.5
Vancomycin	102	5.5	5.5
Pemetrexed	38	5.4	5.5
Baricitinib	17	5.4	5.4
Midazolam Hydrochloride	47	5.4	5.4
Posaconazole Delayed-Release	19	5.3	5.3
Carboplatin	213	5.3	5.3
Amikacin	29	5.2	5.2
Voriconazole	51	5.2	5.2
Cefepime	24	5.1	5.1
Vancomycin Hydrochloride	109	5.1	5.1
Methadone Hydrochloride	18	5.1	5.1
Esomeprazole Magnesium Capsule, Delayed Release	24	5.1	5.1
Esomeprazole Magnesium Delayed Release Capsules	24	5.1	5.1
Esomeprazole Magnesium Dihydrate	24	5.0	5.1
Rituximab	332	5.0	5.0
Darunavir	24	4.9	4.9
Pemetrexed Disodium	59	4.8	4.8
Linezolid	46	4.7	4.8
Cyclosporine	169	4.7	4.7
Anti-Itch	102	4.7	4.7
Anti-Pruritic	102	4.7	4.7
Antipruritic (Anti-Itch)	102	4.7	4.7
Cool Relief Gel With Aloe	102	4.7	4.7
Drs. Hydrocortisone	102	4.7	4.7
Hydrocortisone Continuous Spray	102	4.7	4.7
Hydrocortisone Spray	102	4.7	4.7
Anti-Itch Cream	102	4.7	4.7
Hydrocortisone Lotion	102	4.7	4.7
Hydrocortisone Cream 1%	102	4.7	4.7
Hydrocortisone Cream 1/2%	102	4.7	4.7
Hydrocortisone 1%	102	4.7	4.7
Blinatumomab	16	4.7	4.7
Hydrocortisone Cream	102	4.7	4.7
Levetiracetam Injection	117	4.7	4.7
Axicabtagene Ciloleucel	15	4.7	4.7
Levetiracetam In Sodium Chloride	116	4.6	4.6
Levetiracetam Oral	116	4.6	4.6
Valproic Acid	47	4.6	4.6
Propofol	54	4.5	4.6
Levetiracetam	194	4.5	4.5
Oxcarbazepine	48	4.5	4.5
Posaconazole	24	4.5	4.5
Adalimumab-Aaty	69	4.5	4.5
Bleomycin Sulfate	15	4.4	4.5
Methylprednisolone Sodium Succinate	67	4.4	4.5
Phenobarbital	21	4.4	4.4
Clobazam	35	4.4	4.4
Adalimumab-Fkjp	66	4.4	4.4
Hydrocortisone Acetate	103	4.4	4.4
Ocrelizumab	88	4.4	4.4
Piperacillin And Tazobactam	18	4.3	4.3
Leflunomide	145	4.3	4.3
Adalimumab-Adaz	73	4.3	4.3
Bevacizumab	169	4.3	4.3
Methylprednisolone Acetate	11	4.2	4.2
Ritonavir	40	4.2	4.2
Valproate Sodium	28	4.2	4.2
Zonisamide	20	4.1	4.1
Clarithromycin	46	4.1	4.1
Obinutuzumab	22	4.1	4.1
Valacyclovir Hydrochloride	92	4.0	4.0
Hydrocortisone	116	4.0	4.0
Hydroxychloroquine	97	4.0	4.0
Amoxicillin	97	3.9	3.9
Paclitaxel (Aibumin-Bound)	104	3.9	3.9
Brentuximab Vedotin	13	3.9	3.9
Oseltamivir	10	3.8	3.8
Methotrexate	499	3.8	3.8
Cladribine	12	3.8	3.8
Oseltamivir Phosphate	30	3.8	3.8
Piperacillin Sodium And Tazobactam Sodium	24	3.7	3.8
Metronidazole Topical	58	3.7	3.7
Nevirapine	11	3.7	3.7
Methotrexate Sodium	553	3.7	3.7
Valacyclovir	50	3.7	3.7
Prednisone	559	3.6	3.6
Bendamustine Hydrochloride	14	3.6	3.6
Doxorubicin	103	3.6	3.6
Haloperidol	28	3.5	3.5
Ketoprofen	15	3.5	3.5
Extended Phenytoin Sodium	19	3.5	3.5
Doxorubicin Hydrochloride	37	3.5	3.5
Tocilizumab	128	3.5	3.5
Haloperidol Lactate	28	3.5	3.5
Norepinephrine	12	3.4	3.4
Paclitaxel	109	3.4	3.4
Encorafenib	11	3.4	3.4
Ursodiol	24	3.4	3.4
Leucovorin Calcium	21	3.4	3.4
Dexamethasone 1.5 Mg	311	3.4	3.4
Dexamethasone	311	3.3	3.3
Gentamicin Sulfate	17	3.3	3.3
Moxifloxacin	15	3.3	3.3
Metronidazole	67	3.2	3.2
Azathioprine	91	3.2	3.2
Dalteparin Sodium	11	3.2	3.2
Axitinib	20	3.1	3.1
Piperacillin Sodium,Tazobactam Sodium	27	3.1	3.1
Cisplatin	79	3.1	3.1
Sulfamethoxazole And Trimethoprim	84	3.1	3.1
Gentamicin	13	3.0	3.0
Atovaquone	8	3.0	3.0
Dexamethasone Sodium Phosphate	10	3.0	3.0
Primidone	10	3.0	3.0
Norepinephrine Bitartrate	14	3.0	3.0
Raltegravir	16	3.0	3.0
Everolimus	49	3.0	3.0
Amphetamine	8	3.0	3.0
Lithium Carbonate	16	2.9	2.9
Daratumumab	37	2.8	2.8
Ursosiol	18	2.8	2.8
Metoclopramide	50	2.8	2.8
Magnesium Oxide	38	2.8	2.8
Methadone	38	2.7	2.7
Febuxostat Tablets 40 Mg	9	2.7	2.7
Febuxostat Tablets 80 Mg	9	2.7	2.7
Latanoprost	44	2.7	2.7
Dabrafenib	18	2.6	2.6
Ofatumumab	28	2.6	2.6
Carbamazepine	56	2.6	2.6
Moxifloxacin Hydrochloride	17	2.6	2.6
Ifosfamide	18	2.6	2.6
Esomeprazole	50	2.5	2.5
Metoclopramide Hydrochloride	62	2.5	2.5
Ibrutinib	64	2.4	2.4
Infliximab	170	2.4	2.4
Allopurinol	122	2.4	2.4
Tenofovir Disoproxil Fumarate	26	2.4	2.4
Trametinib	19	2.4	2.4
Crizotinib	10	2.4	2.4
Granisetron Hydrochloride	8	2.3	2.3
Dorzolamide Hydrochloride And Timolol Maleate	6	2.3	2.3
Fexofenadine Hcl	7	2.3	2.3
Azithromycin Dihydrate	44	2.3	2.3
Aripiprazole Oral	31	2.3	2.3
Aripiprazole Orally Disintegrating	31	2.3	2.3
Vemurafenib	9	2.3	2.3
Diphenhydramine	47	2.3	2.3
Ibuprofen Oral	147	2.3	2.3
Ibuprofen Capsule	146	2.3	2.3
Ibuprofen Tablet, Film Coated	146	2.3	2.3
Ibupfrofen	146	2.3	2.3
Ibuprofen Tablets Usp, 200Mg	146	2.3	2.3
Ibuprofen Capsules 200 Mg	146	2.3	2.3
Ibuprofen 200 Mg	146	2.3	2.3
Ibuprofen 200Mg	146	2.3	2.3
Levofloxacin	44	2.2	2.2
Levofloxacin In 5% Dextrose	44	2.2	2.2
Misoprostol	7	2.2	2.2
Temozolomide	15	2.2	2.2
Ado-Trastuzumab Emtansine	6	2.2	2.2
Cannabidiol	16	2.1	2.1
Thalidomide	25	2.1	2.1
Adrenalinum	28	2.1	2.1
Brivaracetam	6	2.0	2.0
Alteplase	10	2.0	2.0
Natalizumab	120	2.0	2.0
Valsartan And Hydrochlorothiazide	9	2.0	2.0
Bortezomib	59	2.0	2.0
Memantine	9	2.0	2.0
Memantine Hydrochloride	9	2.0	2.0
Febuxostat	11	2.0	2.0
Daptomycin	6	2.0	2.0
Lamotirigine	46	2.0	2.0
Lamotrigine Extended-Release	46	2.0	2.0
Lamotrigine Chewable Dispersible	46	2.0	2.0
Fingolimod Hcl	53	1.9	1.9
Imatinib Mesylate	17	1.9	1.9
Carfilzomib	17	1.8	1.8
Erythropoietin	12	1.8	1.8
Amantadine	9	1.8	1.8
Granisetron	6	1.7	1.7
Deferasirox	15	1.7	1.7
Botulinum Toxin Type A	7	1.7	1.7
Siponimod	5	1.7	1.7
Sitagliptin And Metformin Hydrochloride	12	1.7	1.7
Dolutegravir Sodium	5	1.7	1.7
Eszopiclone	14	1.7	1.7
Azacitidine For	10	1.7	1.7
Abatacept	75	1.7	1.7
Prochlorperazine Maleate	5	1.7	1.7
Lapatinib	8	1.6	1.6
Oxaliplatin	36	1.5	1.5
Fluorouracil Cream, 0.5%	37	1.5	1.5
Iohexol	4	1.5	1.5
Cabozantinib	23	1.5	1.5
Fluorouracil	37	1.5	1.5
Nilotinib	14	1.5	1.5
Azacitidine	14	1.4	1.4
Dimethyl Fumarate	56	1.4	1.4
Ravulizumab	6	1.4	1.4
Gefitinib	4	1.4	1.4
Regorafenib	5	1.3	1.3
Entecavir	5	1.3	1.3
Eculizumab	23	1.3	1.3
Venetoclax	26	1.3	1.3
Diroximel Fumarate	5	1.3	1.3
Acalabrutinib	5	1.3	1.3
Vigabatrin	6	1.3	1.3
Polatuzumab Vedotin	4	1.3	1.3
Upadacitinib	32	1.2	1.2
Canakinumab	4	1.1	1.1
Teriflunomide	16	1.1	1.1
Certolizumab Pegol	41	1.1	1.1
Selinexor	3	1.1	1.1
Isotretinoin	17	1.1	1.1
Clozapine	43	1.0	1.0
Ribavirin	22	1.0	1.0
Interferon Beta-1A	66	1.0	1.0
Rucaparib	3	1.0	1.0
Olaparib	7	1.0	1.0
Docetaxel Anhydrous	22	1.0	1.0
Docetaxel	22	1.0	1.0
Etanercept	191	1.0	1.0
Belimumab	10	1.0	1.0
Sofosbuvir	6	0.9	0.9
Abiraterone	4	0.9	0.9
Emtricitabine And Tenofovir Disoproxil Fumarate	13	0.9	0.9
Dasatinib	10	0.8	0.8
Icodextrin, Sodium Chloride, Sodium Lactate, Calcium Chloride, Magnesium Chloride	8	0.8	0.8
Pomalidomide	26	0.8	0.8
Abemaciclib	5	0.8	0.8
Velpatasvir And Sofosbuvir	3	0.7	0.7
Peginterferon Beta-1A	3	0.7	0.7
Bictegravir Sodium, Emtricitabine, And Tenofovir Alafenamide Fumarate	4	0.7	0.7
Tapentadol Hydrochloride	7	0.6	0.6
Erenumab-Aooe	9	0.5	0.5
Etonogestrel	6	0.4	0.4

Related reactions

Data source: openFDA FAERS. See the OpenPV methodology and limitations.