NABP Exam NAPLEX Topic 1 Question 27 Discussion

Actual exam question for NABP's NAPLEX exam

Question #: 27
Topic #: 1

LT is a 42-year-old white female with past medical history of epilepsy, gastroesophageal reflux disease and seasonal allergies. She weighs 86 kg, height 5'6'' and allergic to Aspirin (rash) and Phenobarbital (difficulty breathing).

Her medications include Omeprazole 40mg daily, Phenytoin 200mg twice daily, Valproic acid 500mg four times daily, Loratadine 10mg daily. She comes to your community pharmacy to pick up prescription for Primidone 250mg twice daily.

Pertaining to Primidone what is the most appropriate action to take?

ANotify the physician, Primidone dose is too low.

BNotify the physician, Primidone in contraindicated in patient with phenobarbital allergy.

CNotify the physician, Primidone in contraindicated in patient with Aspirin allergy.

DNotify the physician, patient is already on three anti-seizure medication and primidone is not needed.

ENotify the physician, Primidone in contraindicated in patient with gastroesophageal reflux disease.

Show Suggested Answer

Suggested Answer: B

Primidone is an anticonvulsant drug that is structurally related to phenobarbital. Primidone is metabolized to

phenobarbital and therefore shares its anticonvulsant and sedative properties. Primidone may be more effective than therapy with phenobarbital alone because primidone and both of its metabolites, phenobarbital and phenylethylmalonamide (PEMA), possess anticonvulsant activity.

by Charlene at May 03, 2022, 10:00 AM

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