Phenytoin and Folic Acid Use the Same Binding Sites in the Body

question 3

Multiple Choice

Phenytoin and folic acid use the same binding sites in the body. If an increased intake of folic acid inhibits phenytoin therapy to the extent that seizure activity increases, the effect is termed

• A) Presystemic clearance (first-pass mechanism)
• B) Pharmacodynamic
• C) Pharmacokinetic
• D) Subtherapeutic

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Definitions:

Payroll Tax Expense

Taxes that are incurred by an employer based on the wages and salaries paid to employees, including social security taxes, Medicare taxes, and unemployment taxes.

FICA Taxes

Federal taxes in the United States that fund Social Security and Medicare, required to be withheld from employees' paychecks.

State Income Taxes

State-specific levies on the earnings of individuals and businesses within their territories.

Union Dues

Fees paid by members to labor unions for the costs of union representation, benefits, and collective bargaining.