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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.

Hyperammonaemic encephalopathy: Which Medications Cause It? (1,381 Reports Across 124 Drugs)

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Hyperammonaemic encephalopathy has been reported as an adverse event with 124 different drugs in the FDA's FAERS database, with 1,381 total reports. 157 of these reports resulted in death.The drugs most commonly associated with Hyperammonaemic encephalopathy are VALPROIC ACID, FLUOROURACIL, and VALPROATE.

1,381
Total Reports
124
Drugs Involved
157
Deaths
923
Hospitalizations
43.1 yrs
Average Patient Age
44.9% / 55.1%
Female / Male

Which Drugs Cause Hyperammonaemic encephalopathy Most Often?

Drug Reports % of Drug Reports Deaths Hosp. Life-Threat.
VALPROIC ACID 455 2.3% 34 318 98
FLUOROURACIL 156 0.3% 11 81 39
VALPROATE 120 0.8% 4 80 18
DIVALPROEX 119 1.0% 9 73 14
OXALIPLATIN 107 0.2% 11 54 24
TOPIRAMATE 101 0.4% 0 73 5
RISPERIDONE 96 0.1% 0 62 16
QUETIAPINE 91 0.1% 0 66 23
LEVETIRACETAM 71 0.1% 5 45 18
LEUCOVORIN 62 0.3% 8 28 14
CAPECITABINE 60 0.1% 1 37 10
OLANZAPINE 54 0.1% 0 41 18
PREDNISONE 45 0.0% 7 39 19
CISPLATIN 44 0.1% 1 29 4
CARBAMAZEPINE 42 0.2% 1 34 2
DEXAMETHASONE 40 0.0% 14 30 18
PHENYTOIN 40 0.3% 3 28 3
LORAZEPAM 37 0.1% 0 21 7
ZONISAMIDE 33 0.7% 0 27 10
TACROLIMUS 32 0.0% 8 19 10

View all 124 drugs →

Top 3 Drugs Associated With Hyperammonaemic encephalopathy

455 reports
156 reports
120 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)