Mood Stabilizer Safety

Mood stabilizers are not interchangeable “psychiatric medications.” Each has a different route to harm: lithium accumulates when renal clearance falls; valproate can injure the liver or pancreas and impair platelet production; carbamazepine can suppress bone marrow, lower sodium, and trigger severe skin reactions; lamotrigine can cause a rapidly progressive rash. A patient may have taken the same prescription safely for months and still become toxic after vomiting, a new blood pressure medication, an over-the-counter pain reliever, or a change in fluid intake. The nurse’s task is to recognize the change that has made an otherwise familiar regimen unsafe. Within the LPN role, this means obtaining focused assessments, administering medications as prescribed, reviewing available laboratory results and medication changes, recognizing urgent patterns, and promptly reporting concerns to the RN or prescriber according to state law and facility policy. Serum drug levels guide prescriber-directed dosing; an LPN does not independently increase, decrease, or restart a mood stabilizer based on a result.