Reaction

Anticonvulsant Drug Level Below Therapeutic reporting signals

Last recalculated 2026-09-14T18:28:35.993900+00:00 · 752 reports · 24 co-occurring drugs

As of the last recalculation, Anticonvulsant Drug Level Below Therapeutic appears in 752 FAERS reports alongside 24 co-occurring drug terms. The strongest observed disproportionality signal is EXTENDED PHENYTOIN SODIUM (PRR 344.0).

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.
DrugCo-reportsPRRROR
Extended Phenytoin Sodium163344.0347.4
Phenytoin83123.6124.1
Phenobarbital3263.863.9
Valproate Sodium3752.152.2
Valproic Acid4340.040.0
Carbamazepine8539.539.5
Levetiracetam In Sodium Chloride8433.733.7
Levetiracetam Oral8433.733.7
Levetiracetam Injection8433.633.7
Divalproex Sodium5132.532.5
Levetiracetam12631.231.2
Meropenem2421.321.4
Oxcarbazepine2421.121.1
Zonisamide1120.920.9
Lamotrigine8620.320.3
Lamotirigine4920.220.2
Lamotrigine Extended-Release4920.220.2
Lamotrigine Chewable Dispersible4920.220.2
Clobazam1618.518.5
Lacosamide2015.315.3
Remdesivir714.714.7
Temozolomide1013.313.3
Brivaracetam39.39.3
Vigabatrin47.67.6

Related reactions

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