Drug

Dexchlorpheniramine Maleate

32 flagged reaction(s) · 445 total co-reports · max PRR 43.4

Important: Reactions below are the flagged terms from this drug’s FAERS report history (min. 3 co-reports per term) — PRR/ROR indicate disproportionality in spontaneous reporting, not causation. Data from FDA FAERS via openFDA. Last recalculated: 2026-09-14.

	Reaction	Co-reports (a)	PRR	ROR	Signal
1	Cytokine Release Syndrome	39	43.4	45.2	signal
2	Hepatocellular Injury	20	29.8	30.4	signal
3	Cytomegalovirus Infection	17	21.7	22.0	signal
4	Anaphylactic Shock	25	20.7	21.2	signal
5	Infusion Related Reaction	64	20.5	21.9	signal
6	Febrile Neutropenia	64	20.5	21.8	signal
7	Hepatic Cytolysis	11	19.1	19.3	signal
8	Retinal Detachment	8	18.4	18.6	signal
9	Neutrophil Count Decreased	31	16.2	16.7	signal
10	Bronchospasm	10	14.8	14.9	signal
11	Erythema Multiforme	6	13.6	13.7	signal
12	Oesophagitis	7	13.6	13.7	signal
13	Lymphopenia	9	13.6	13.7	signal
14	Metastases To Lung	6	11.0	11.1	signal
15	Thrombotic Microangiopathy	5	10.9	11.0	signal
16	Akathisia	7	10.9	10.9	signal
17	Rash Maculo-papular	11	10.5	10.6	signal
18	Hypothermia	5	10.4	10.5	signal
19	Agranulocytosis	9	10.3	10.4	signal
20	Pharyngitis	6	10.2	10.3	signal
21	Mucosal Inflammation	12	9.8	9.9	signal
22	Shock	10	9.3	9.4	signal
23	Face Oedema	7	8.8	8.8	signal
24	Multi-organ Failure	7	8.5	8.5	signal
25	Interstitial Lung Disease	16	7.0	7.1	signal
26	Haematotoxicity	3	6.9	6.9	signal
27	Toxic Skin Eruption	3	6.3	6.3	signal
28	Myelosuppression	9	5.6	5.6	signal
29	Peritonitis	5	5.1	5.1	signal
30	Palmar-plantar Erythrodysaesthesia Syndrome	5	4.5	4.5	signal
31	Dermatitis Atopic	5	2.1	2.1	no signal
32	Drug Exposure During Pregnancy	3	1.8	1.8	no signal