Q- A 70-year-old man with atrial fibrillation is prescribed warfarin. He is advised to avoid consuming large amounts of leafy green vegetables.
What is the reason for this recommendation?
A- They decrease the anticoagulant effect
B- They increase bleeding risk
C. They increase liver enzyme activity
D. They reduce drug absorption
Q- A 28-year-old woman is prescribed tetracycline for acne. Which of the following is an important counseling point?
A- Avoid dairy products while taking the medication
B- Do not take with acetaminophen
C- May cause hyperpigmentation of the skin
D- Take with a high-fat meal to enhance absorption
.
Q- A 62-year-old woman is prescribed nitroglycerin for chronic stable angina. She reports persistent headaches and flushing after use. What is the most likely mechanism behind these side effects?
A- Acetylcholine-induced vasodilation
B- Beta-adrenergic stimulation
C- Increased sympathetic outflow
D- Nitric oxide-mediated vasodilation