* Quetiapine is principally metabolized by CYP3A4 to active and inactive metabolites.
* This combination of drugs may have possible synergistic effects. However, this combination will also have additive side effects. Dose adaptation will be recommended for this combination. <ref> {{Pubmed|18579216|Vieta E at al, Efficacy and safety of quetiapine in combination with lithium or divalproex for maintenance of patients with bipolar I disorder (international trial 126). J Affect Disord. 2008 Aug;109(3):251-63. Epub 2008 Jun 24}}</ref>