11 Psychopharmacology in Nursing Practice

Purpose and nursing role

Psychotropic medications are used to reduce symptoms and support functioning in mental health conditions. They are most effective when matched to the patient’s needs and combined, when appropriate, with psychotherapy, social support, and other care.

Nurses assess response and safety, support informed medication use, and communicate concerns promptly. Medication selection and dose changes are prescriber decisions; nursing actions must follow the order, current drug labeling, and applicable policies.

Assessment and treatment principles

Individualize treatment by considering the patient’s symptoms, history, age, physical health, preferences, pregnancy potential, and previous medication response. Establish a baseline that includes relevant symptoms and functioning, current medications and supplements, allergies, vital signs, and physical or laboratory measures indicated for the specific drug.

Before antidepressant treatment, screen for and report a history suggesting bipolar disorder. Antidepressants may trigger mania in some people with bipolar disorder.

Assess therapeutic benefit and adverse effects over time. They may emerge on different timelines, so evaluate the patient’s actual response rather than relying on a laboratory value alone. Avoid abrupt changes without clinical direction: suddenly stopping or changing some medications can cause withdrawal symptoms, relapse, or other harm.

Medication reconciliation and nursing responsibilities

Medication reconciliation includes prescription medications, nonprescription drugs, herbs, and supplements. Complete it at admission, transfer, and discharge, and clarify discrepancies with the prescriber.

Before administration, verify the medication order and patient identity. Review allergies, relevant assessment findings, scheduled monitoring, and potential interactions. Administer and document according to policy. After administration, observe and record therapeutic response, adverse effects, patient understanding, and relevant objective findings.

Communicate significant changes and unresolved medication discrepancies to the prescriber. Complete medication reconciliation at care transitions.

Monitoring medication groups

Monitoring should reflect the medication, its intended use, and the patient’s care plan.

• Antidepressants: Selective serotonin reuptake inhibitors (SSRIs), such as sertraline, serotonin-norepinephrine reuptake inhibitors (SNRIs), and other agents are commonly used for depression and anxiety disorders. Assess mood, sleep, activation, adherence, and suicidal thoughts, especially when treatment starts or the dose changes. Monitor for serotonin syndrome when serotonergic drugs are combined. Antidepressants carry a warning about increased suicidal thoughts and behaviors in children, adolescents, and young adults; promptly report new or worsening symptoms.

• Antipsychotics: First- and second-generation medications are used for psychosis and, for some drugs, mood disorders. Assess target symptoms, sedation, orthostatic symptoms, movement changes, and adherence. Monitor weight and metabolic indicators such as glucose and lipids as appropriate to the medication and care plan. Report involuntary movements because tardive dyskinesia can become persistent.

• Mood stabilizers: Lithium and anticonvulsants such as valproate are used particularly in bipolar disorder. For lithium, monitor prescribed serum levels and renal, thyroid, and electrolyte status. Reassessment of levels may be needed after dose or interacting-medication changes, illness, or major changes in physical activity. For valproate, monitor liver tests and watch for symptoms of liver injury; discuss pregnancy-related risks with the prescriber.

• Anxiolytics and sedative-hypnotics: These include benzodiazepines and other agents used for anxiety, agitation, or sleep. Assess sedation, alertness, falls risk, and breathing when clinically relevant. Check for other sedating substances or medications and reinforce drug-specific precautions. Risks and monitoring differ substantially across medications, so consult the current label and care plan.

Precautions for lithium and clozapine

For lithium, a blood sample for a level is generally drawn immediately before the next dose, about 12 hours after the prior dose, according to the prescription and laboratory protocol. Lithium toxicity can occur near therapeutic concentrations. New or worsening tremor, unsteady gait, confusion, vomiting, or diarrhea warrants prompt assessment and prescriber notification, particularly during dehydration or acute illness. Do not interpret a level in isolation.

For clozapine, severe neutropenia remains a risk, so prescribers should continue absolute neutrophil count (ANC) monitoring according to the prescribing information. The FDA removed the Clozapine REMS effective June 13, 2025. REMS participation and reporting are no longer required for dispensing, but this change does not remove the need for clinically recommended ANC monitoring. Follow current product labeling and local workflow.

Patient education and adherence

Use plain language, invite questions, and check understanding with teach-back. Explain the medication’s purpose, the symptoms it targets, how and when to take it, and when follow-up is planned.

Review the prescribed dose and schedule, what to do about a missed dose according to the medication instructions, and why the patient should not share medication or change the dose independently. Explain which side effects are expected, which should be reported, and how to get urgent help. Encourage the patient to report concerns rather than stopping treatment without advice.

Advise the patient to ask the prescriber or pharmacist before adding over-the-counter drugs, supplements, or herbal products, and to disclose alcohol and other substance use. Discuss adherence barriers without judgment, agree on reminders or other supports, and encourage the patient to keep appointments and complete ordered laboratory tests. Provide written instructions and involve a support person with the patient’s permission.

Urgent symptoms and escalation

Treat suspected emergencies as urgent, follow emergency procedures, and notify the appropriate clinician immediately.

• Serotonin syndrome: Possible signs include agitation or confusion, sweating or fever, tremor, muscle jerking, or hyperreflexia.

• Neuroleptic malignant syndrome: Possible signs include fever, rigidity, altered mental status, and autonomic instability.

• Suspected lithium toxicity: Promptly assess concerning symptoms and notify the prescriber.

New or worsening suicidal thoughts require prompt safety assessment and escalation under the care setting’s protocol.