Table 3 Recommended adjustment of clinical doses for patients undergoing pharmacogenetic intervention (PharmG+)

From: A pharmacogenetic intervention for the improvement of the safety profile of antipsychotic treatments

Antipsychotic

Standard clinical dose

CYP1A2

CYP2D6

CYP2C19

CYP3A5

  

PM

IM

UM

PM

IM

UM

PM

IM

PM

IM

UM

Clozapine

150–900 mg/day

<25–50%

NC

>25–30%

   

<25–30%

NC

   

Olanzapine

7.5–30 mg/day

<25–50%

NC

>25–30%

        

Risperidone

3–12 mg/day

   

<25–30%

Gradual

>25–30%

     

Haloperidol

10–20 mg/day

   

<50%

<10–20%

>25–30%

     

Aripiprazole

10–30 mg/day

   

<25–50%

Gradual

>25–30%

     

Quetiapine

300–750 mg/day

        

<25–50%

<10–20%

>25–30%

Ziprasidone

80–160 mg/day

        

<5–50%

<10–20%

>25–30%

  1. Gradual: 5–10% reduction every 3 days (up to 30% reduction) depending on side effects