Reaction

Pseudomembranous Colitis reporting signals

Last recalculated 2026-09-14T18:28:35.993900+00:00 · 2,215 reports · 99 co-occurring drugs

As of the last recalculation, Pseudomembranous Colitis appears in 2,215 FAERS reports alongside 99 co-occurring drug terms. The strongest observed disproportionality signal is MEROPENEM (PRR 41.0).

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
Meropenem	132	41.0	41.2
Metronidazole	241	39.7	39.8
Metronidazole Topical	183	39.2	39.4
Cefuroxime	44	36.9	37.0
Piperacillin Sodium And Tazobactam Sodium	63	31.0	31.1
Vancomycin Hydrochloride	190	29.5	29.6
Piperacillin And Tazobactam	38	28.4	28.5
Micafungin Sodium	23	25.7	25.8
Ampicillin	22	25.2	25.3
Ampicillin Sodium	22	25.2	25.3
Vancomycin	145	25.2	25.2
Ceftriaxone Sodium	96	24.5	24.6
Piperacillin Sodium,Tazobactam Sodium	63	22.9	23.0
Ceftriaxone	72	21.3	21.3
Cefepime Hydrochloride	35	20.7	20.8
Clarithromycin	68	19.2	19.2
Clindamycin Phosphate	65	18.8	18.8
Clindamycin	55	18.6	18.7
Cefepime	28	18.6	18.6
Ciprofloxacin Tablets	132	18.4	18.4
Ciprofolxacin	131	18.2	18.2
Levofloxacin	111	18.2	18.2
Levofloxacin In 5% Dextrose	111	18.2	18.2
Cefazolin Sodium	23	18.1	18.1
Pyrazinamide	16	16.1	16.1
Cefazolin	15	15.5	15.6
Ciprofloxacin	139	15.1	15.1
Hydrocortisone Sodium Succinate	15	15.1	15.1
Gentamicin Sulfate	25	15.0	15.0
Ciprofloxacin Hydrochloride	145	14.9	14.9
Itraconazole	18	14.6	14.6
Gentamicin	20	14.5	14.5
Anti-Thymocyte Globulin (Rabbit)	12	14.0	14.1
Ganciclovir	14	12.9	12.9
Linezolid	39	12.5	12.5
Ganciclovir Sodium	14	12.5	12.5
Rifaximin	26	11.8	11.8
Granisetron Hydrochloride	13	11.8	11.8
Amikacin	21	11.7	11.7
Valganciclovir Hydrochloride Powder,	15	11.6	11.6
Isoniazid	19	11.1	11.1
Tobramycin Solution	14	11.0	11.0
Nitrofurantoin	19	10.9	10.9
Nitrofurantoin (Monohydrate/Macrocrystals)	19	10.8	10.8
Tobramycin Sulfate	14	10.7	10.7
Trimethoprim	13	10.4	10.4
Rifampicin	11	10.3	10.3
Bendamustine Hydrochloride	13	10.3	10.3
Fluconazole	74	10.2	10.2
Voriconazole	31	9.7	9.7
Amoxicillin And Clavulanate Potassium	27	9.4	9.4
Phenytoin	20	9.1	9.1
Moxifloxacin	13	8.7	8.7
Filgrastim	34	8.6	8.6
Erythromycin	17	8.6	8.6
Azacitidine	26	8.3	8.3
Azithromycin	35	8.3	8.3
Valganciclovir	16	8.0	8.0
Valganciclovir Hydrochloride	16	8.0	8.0
Azithromycin Monohydrate	35	8.0	8.0
Bendamustine Hcl	13	7.9	7.9
Ursodiol	18	7.8	7.8
Heparin Sodium	11	7.5	7.6
Melphalan	18	7.5	7.5
Brentuximab Vedotin	8	7.4	7.4
Granisetron	8	7.2	7.2
Melphalan Hydrochloride	19	7.2	7.2
Tolvaptan	11	7.1	7.1
Rifampin	11	7.1	7.1
Voriconazole Injection	16	7.0	7.0
Azacitidine For	13	6.7	6.8
Amoxicillin	53	6.7	6.7
Loperamide Hydrochloride Oral	7	6.5	6.5
Pitavastatin Calcium	7	6.4	6.4
Tobramycin	16	6.3	6.3
Lopinavir And Ritonavir	9	6.3	6.3
Paclitaxel	63	6.1	6.1
Paclitaxel (Aibumin-Bound)	52	6.1	6.1
Insulin Glargine-Yfgn	14	6.0	6.1
Daratumumab	25	5.9	5.9
Phenobarbital	9	5.9	5.9
Norepinephrine	6	5.3	5.3
Daptomycin	5	5.1	5.1
Docetaxel Anhydrous	35	4.9	4.9
Docetaxel	35	4.9	4.9
Fluorouracil	40	4.9	4.9
Fluorouracil Cream, 0.5%	39	4.9	4.9
Methoxy Polyethylene Glycol-Epoetin Beta	5	4.3	4.3
Lapatinib	7	4.2	4.3
Carboplatin	56	4.2	4.2
Bortezomib	39	4.2	4.2
Carfilzomib	12	4.0	4.0
Oxaliplatin	29	3.7	3.7
Gemcitabine	15	3.6	3.6
Obinutuzumab	6	3.4	3.4
Ipilimumab	14	3.1	3.1
Cetuximab	10	3.0	3.0
Polatuzumab Vedotin	3	2.9	2.9
Isotretinoin	13	2.5	2.5

Related reactions

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