Lesson 2 of 5 · 24 min

Valproate (Divalproex): Mania, Mixed States & Hepatic Safety

Learning objectives

Recognize boxed warnings for valproate
Apply monitoring for LFTs, CBC/platelets and levels
Counsel on teratogenicity

Valproate is effective in acute mania, including mixed features and rapid cycling presentations. It is hepatically metabolized and highly protein bound.

Boxed warnings include hepatotoxicity, pancreatitis, and fetal risk (neural tube defects and neurodevelopmental effects). It is generally avoided in people who may become pregnant unless no alternative exists and risks are fully discussed.

Monitor liver function tests and CBC with platelets at baseline and periodically. Thrombocytopenia is dose-related. Hyperammonemia can occur even with normal LFTs.

Key points

Boxed: hepatotoxicity, pancreatitis, teratogenicity
Monitor LFTs, CBC/platelets, weight
Can cause weight gain, hair loss, tremor, PCOS-like features

Exam pearls

◆ Valproate INHIBITS lamotrigine metabolism — lamotrigine dose must be reduced
◆ Abdominal pain + vomiting on valproate → think pancreatitis
◆ Confusion with normal LFTs → check ammonia

Educational content for exam preparation; verify dosing and monitoring with current prescribing information. References: [APA 7 placeholder — to be supplied by author].

Lesson check

Question 1 · valproate

A patient on divalproex reports severe abdominal pain radiating to the back with vomiting. The PRIORITY concern is:

Question 2 · valproate

Which counseling point is MOST essential for a 24-year-old who could become pregnant and is considering valproate?

Question 3 · valproate

A patient on valproate becomes confused. LFTs are normal. Which test should be checked NEXT?