A nurse is contributing to the plan of care for a client who has a seizure disorder. Which of the following interventions should the nurse include in the plan? (Select all that apply.)

A. B6 (Pyridoxine):

Vitamin B6, also known as pyridoxine, is known to reduce the therapeutic effects of levodopa. It competes with levodopa for absorption in the gastrointestinal tract and can decrease the amount of levodopa that reaches the brain, thereby diminishing its effectiveness in treating Parkinson's disease symptoms.

B. A (Retinol):

Vitamin A, also known as retinol, is not typically associated with reducing the therapeutic effects of levodopa. Vitamin A plays important roles in vision, immune function, and cellular communication, but it does not interact with levodopa in a way that affects its therapeutic efficacy.

C. E (Alpha-Tocopherol):

Vitamin E, also known as alpha-tocopherol, is an antioxidant that plays a role in protecting cells from oxidative damage. While vitamin E supplementation is sometimes used in Parkinson's disease management for its potential neuroprotective effects, it is not known to reduce the therapeutic effects of levodopa.

D. K (Phylloquinone):

Vitamin K, also known as phylloquinone, is primarily involved in blood clotting and bone metabolism. It does not interact with levodopa in a way that reduces its therapeutic effects.

E. C (Ascorbic Acid):

Vitamin C, also known as ascorbic acid, is not known to reduce the therapeutic effects of levodopa. While vitamin C has various roles in the body, including antioxidant activity and immune function support, it does not interfere with levodopa absorption or efficacy.

To calculate the dose of phenytoin suspension, the nurse should use the following formula:

Dose (mL) = Desired dose (mg) / Concentration (mg/mL) x Volume (mL)

Plugging in the values from the question, we get:

Dose (mL) = 75 mg / (25 mg/5 mL) x 5 mL

Dose (mL) = 15 mL

Therefore, the nurse should administer 15 mL of phenytoin suspension to the patient