Which of the following is true regarding St. John's Wort?

a. T ½ of 60 hrs
b. 40-60% reaches systemic circulation
c. Significant inhibition of Cyt. P450 system
d. Peak blood levels occur in 10-15 minutes
e. A and B
f. C and D
g. All of the above


Answer: c. Significant inhibition of Cyt. P450 system

Anatomy & Physiology

You might also like to view...

Which type of allergy/hypersensitivity occurs independent of antibodies? 

A. Delayed hypersensitivity B. Immediate hypersensitivity C. Cytotoxic hypersensitivity D. Immune-complex hypersensitivity

Anatomy & Physiology

The units for measurement of glomerular filtration rate are

A. liters. B. mmHg. C. liters per minute. D. mmHg per minute.

Anatomy & Physiology

A drug that enhances the actions of the sympathetic nervous system by stimulating adrenergic receptors or promoting norepinephrine release is called ________.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

Which pair of salivary glands secretes substances that reduce oral bacteria populations?

A) lingual B) sublingual C) submandibular D) parotid E) buccal

Anatomy & Physiology