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Important: This site presents data from the FDA Adverse Event Reporting System (FAERS). A report does not mean the drug caused the event. Full disclaimer.

Anticholinergic syndrome: Which Medications Cause It? (1,229 Reports Across 135 Drugs)

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Anticholinergic syndrome has been reported as an adverse event with 135 different drugs in the FDA's FAERS database, with 1,229 total reports. 51 of these reports resulted in death.The drugs most commonly associated with Anticholinergic syndrome are QUETIAPINE, DIPHENHYDRAMINE, and OLANZAPINE.

1,229
Total Reports
135
Drugs Involved
51
Deaths
735
Hospitalizations
39.7 yrs
Average Patient Age
59.2% / 40.8%
Female / Male

Which Drugs Cause Anticholinergic syndrome Most Often?

Drug Reports % of Drug Reports Deaths Hosp. Life-Threat.
QUETIAPINE 250 0.3% 0 160 64
DIPHENHYDRAMINE 168 0.7% 16 139 25
OLANZAPINE 164 0.3% 6 84 9
AMITRIPTYLINE 146 0.7% 21 61 29
RISPERIDONE 138 0.2% 0 54 9
MIRTAZAPINE 94 0.3% 0 22 14
ALPRAZOLAM 68 0.1% 0 58 19
OXYBUTYNIN 66 0.9% 0 14 0
TRAZODONE 63 0.3% 0 16 3
VENLAFAXINE 63 0.1% 0 43 12
HYDROXYZINE 59 0.5% 0 44 5
ATROPINE 57 2.0% 0 43 5
ACETAMINOPHEN 56 0.0% 20 45 9
PAROXETINE 55 0.3% 0 23 7
HALOPERIDOL 54 0.3% 0 15 1
TOLTERODINE 54 2.2% 0 8 0
CARBIDOPA\LEVODOPA 52 0.1% 0 0 0
LOPERAMIDE 52 0.3% 0 1 0
RANITIDINE 52 0.0% 0 7 0
LORAZEPAM 50 0.2% 2 34 27

View all 135 drugs →

Top 3 Drugs Associated With Anticholinergic syndrome

250 reports
168 reports
164 reports

Related Side Effects

Drug ineffective (1,049,718) Off label use (762,782) Death (660,423) Fatigue (599,248) Nausea (562,301) Diarrhoea (491,550) Pain (471,975) Headache (460,069) Dyspnoea (409,496) Dizziness (352,922)