What information must be provided to a patient receiving rifampin?

A. A nonharmful side effect of the drug is red-orange discoloration of urine, sweat, and tears.
B. Oral contraception is the preferred method of birth control when using rifampin.
C. Peripheral neuropathy is an expected side effect, and the patient should report any numbness or tingling of the extremities.
D. The patient will only need to take this medication for the prescribed 14-day period.