What is the effect of St. John's Wort on the metabolism of certain drugs?

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Question: What is the effect of St. John\'s Wort on the metabolism of certain drugs?

Options:

Correct Answer: Induces CYP450 enzymes

Solution:

St. John\'s Wort is known to induce CYP450 enzymes, which can lead to decreased effectiveness of drugs metabolized by these enzymes.

What is the effect of St. John's Wort on the metabolism of certain drugs?

What is the effect of St. John's Wort on the metabolism of certain drugs?

Step 1: Understand what St. John's Wort is. It is a herbal supplement often used for depression.
Step 2: Learn about CYP450 enzymes. These are enzymes in the liver that help break down many drugs.
Step 3: Know that St. John's Wort can increase the activity of these CYP450 enzymes.
Step 4: Realize that when CYP450 enzymes are induced, they can break down certain drugs faster.
Step 5: Understand that if drugs are broken down too quickly, they may not work as well, leading to decreased effectiveness.

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