A patient brings the following new prescriptions to the pharmacy Omeprazole 20 mg PO daily #30 Buspirone 10 mg PO b.i.d. #60 Metformin 250 mg PO b.i.d. #60 Olanzapine 10 mg PO daily #30. In addition the patient requests refills for aripiprazole 10 mg and amiodarone 250 mg. Therapeutic duplication exists between:

Rationale

Therapeutic duplication exists between aripiprazole and olanzapine.

Both aripiprazole and olanzapine are antipsychotic medications that are used to treat similar psychiatric conditions such as schizophrenia and bipolar disorder. Prescribing both simultaneously may result in overlapping therapeutic effects, which can increase the risk of side effects without providing additional benefit.

A (Aripiprazole and omeprazole) YOUR ANSWER

Omeprazole is a proton pump inhibitor used to treat gastroesophageal reflux disease (GERD) and related conditions. It does not have any overlapping therapeutic use with aripiprazole, which is an antipsychotic. Therefore, there is no therapeutic duplication between these two medications.

B (Aripiprazole and olanzapine) CORRECT

Both medications belong to the class of atypical antipsychotics and are used to manage similar mental health disorders. Using both medications concurrently can lead to increased sedation and other side effects associated with antipsychotic therapy, which constitutes therapeutic duplication.

C (Amiodarone and metformin) YOUR ANSWER

Amiodarone is an antiarrhythmic medication, while metformin is an antidiabetic medication. These drugs serve entirely different purposes and do not share overlapping therapeutic effects, meaning there is no therapeutic duplication between them.

D (Amiodarone and buspirone) YOUR ANSWER

Buspirone is an anxiolytic medication, and like metformin, it serves a different therapeutic purpose than amiodarone. There is no overlap in their indications or therapeutic effects, which eliminates the possibility of therapeutic duplication.

Conclusion

Therapeutic duplication involves prescribing multiple medications that have similar pharmacological effects, potentially increasing the risk of side effects. In this case, aripiprazole and olanzapine both serve as antipsychotics, leading to therapeutic duplication. Recognizing such duplications is crucial for ensuring patient safety and optimizing medication therapy.

Therapeutic duplication exists between aripiprazole and olanzapine.

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