A 16-year-old boy is brought to the clinic by his mother with complaints of strange noises and movements. The boy states, “I can’t stand that I make this weird noise with my mouth. I can feel it coming, and I try to stop it for as long as I can, but eventually it just comes out. The other kids at school make fun of me. It’s so embarrassing.” The mother reports that the boy gets good grades and has no trouble concentrating at home when doing homework. Which information does the nurse give the patient and his mother about the medication he will be prescribed?