Patienter med psykiske forstyrrelser i anamnesen synes at have større risiko for de alvorlige psykiske bivirkninger, som nævnt i efavirenzkolonnen i tabel 4 med en hyppighed fra 0, 3% for maniske reaktioner til 2, 0% for både svær depression og suicidaltanker.
Psychiatric symptoms with efavirenz: patients with a history of psychiatric disorders appear to be at greater risk of serious psychiatric adverse reactions listed in the efavirenz column of Table 4 with the frequency of events ranging from 0.3% for manic reactions to 2.0% for both severe depression and suicidal ideation.