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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.

On and off phenomenon: Which Medications Cause It? (4,268 Reports Across 67 Drugs)

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On and off phenomenon has been reported as an adverse event with 67 different drugs in the FDA's FAERS database, with 4,268 total reports. 264 of these reports resulted in death.The drugs most commonly associated with On and off phenomenon are CARBIDOPA\LEVODOPA, FOSCARBIDOPA\FOSLEVODOPA, and PRAMIPEXOLE.

4,268
Total Reports
67
Drugs Involved
264
Deaths
2,191
Hospitalizations
69.4 yrs
Average Patient Age
42.2% / 57.8%
Female / Male

Which Drugs Cause On and off phenomenon Most Often?

Drug Reports % of Drug Reports Deaths Hosp. Life-Threat.
CARBIDOPA\LEVODOPA 3,509 6.0% 241 1,887 63
FOSCARBIDOPA\FOSLEVODOPA 391 12.4% 15 245 2
PRAMIPEXOLE 116 1.9% 3 36 0
APOMORPHINE 107 1.3% 1 21 0
LEVODOPA 106 1.6% 4 26 0
AMANTADINE 81 1.6% 2 40 0
CLOZAPINE 73 0.1% 2 28 0
ROPINIROLE 72 1.7% 3 30 0
BENSERAZIDE\LEVODOPA 65 3.2% 0 47 4
ENTACAPONE 59 4.2% 0 23 0
ISTRADEFYLLINE 58 1.2% 1 3 0
ROTIGOTINE 55 0.7% 0 30 0
PIMAVANSERIN 52 0.1% 2 4 0
RIVASTIGMINE 51 0.6% 3 13 3
QUETIAPINE 50 0.1% 0 23 0
CARBIDOPA\ENTACAPONE\LEVODOPA 40 1.7% 0 17 0
RASAGILINE 38 1.4% 1 4 0
MIRTAZAPINE 32 0.1% 0 20 0
OPICAPONE 25 2.3% 1 6 0
CLONAZEPAM 20 0.1% 0 6 0

View all 67 drugs →

Top 3 Drugs Associated With On and off phenomenon

3,509 reports
116 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)