A nurse is preparing to administer medications to a newly admitted client who has schizophrenia and is experiencing psychosis. Which of the following medications should the nurse plan to administer?

A. Magnesium hydroxide:
Magnesium hydroxide is an antacid commonly used to relieve indigestion and heartburn. It does not have any known significant interactions with tranylcypromine. MAOIs typically do not interfere with antacids.

B. Ibuprofen:
Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) used to reduce pain and inflammation. It does not have specific interactions with tranylcypromine. However, individuals taking MAOIs should be cautious about using NSAIDs due to the potential risk of bleeding, especially gastrointestinal bleeding. While it's not a direct interaction, it's generally advisable for individuals taking MAOIs to consult their healthcare provider before using NSAIDs.

C. Ranitidine:
Ranitidine is an H2 blocker used to reduce stomach acid production. It does not have any known significant interactions with tranylcypromine. H2 blockers like ranitidine are often used to manage gastrointestinal issues and are generally considered safe when taken with MAOIs.

D. Pseudoephedrine:
Pseudoephedrine is a decongestant commonly found in cold and allergy medications. It can cause a dangerous increase in blood pressure when combined with MAOIs, potentially leading to a hypertensive crisis. Due to this serious interaction, individuals taking MAOIs are strongly advised to avoid medications containing pseudoephedrine.

A. Liraglutide 0.6 mg subcutaneously daily:
Liraglutide is a medication used to treat type 2 diabetes and obesity. It works by regulating blood sugar levels and reducing appetite. It has no direct relevance to the treatment of schizophrenia or psychosis. Schizophrenia is a mental health disorder, and antipsychotic medications are typically used to manage its symptoms.

B. Selegiline 6 mg transdermal patch daily:
Selegiline is primarily used to treat Parkinson's disease by enhancing the effects of dopamine in the brain. It is not indicated for schizophrenia or psychosis. While dopamine dysregulation is involved in both Parkinson's disease and schizophrenia, the mechanisms and treatments are different. Antipsychotic medications, not selegiline, are used to manage psychosis in schizophrenia.

C. Aripiprazole 400 mg IM every 4 weeks:
This is the correct choice. Aripiprazole is an atypical antipsychotic medication commonly used to treat schizophrenia and other psychotic disorders. The intramuscular (IM) formulation provides extended release, making it suitable for clients who may have difficulty adhering to daily oral medications. It helps manage psychosis, a common symptom of schizophrenia.

D. Lithium 600 mg PO three times per day:
Lithium is a mood stabilizer commonly used to treat bipolar disorder by preventing or reducing the intensity of manic episodes. It is not a first-line treatment for schizophrenia or psychosis. Antipsychotic medications are the primary choice for managing the symptoms of psychosis in schizophrenia. Lithium is not typically used to address the hallucinations and delusions associated with schizophrenia.