A 16-year-old girl with acne has been prescribed tretinoin (Retin-A cream). Which of the following instructions should the nurse give this girl related to prevention of a common side effect of this medication?
a) Take the medication on an empty stomach
b) Be certain of the expiration date on the drug
c) If taking an oral contraceptive, switch to a different type of contraception while taking this medication
d) Avoid prolonged sun exposure
Answer: Avoid prolonged sun exposure