As an intern, I saw a guy in urgent care with seizures who was on Tegretol. The attending asked me, "What are the main bad side effects of Tegretol?"
"Agranulocytosis," I said. (One of the few things I remembered from med school pharm class)
"Right, what's the other side effect?"
"Um..." She's pretty much reached the limits of what I know about the side effects of Tegretol. "Nausea? Dizziness?"
"Look it up."
I went into epocrates and I get the list of common adverse reactions. I read it to her: "Agranulocytosis, syncope, dizziness, nausea, vomiting, hyponatremia, anemia, thrombocytopenia, elevated liver enzymes, photosensitivity, pruritis, edema, arrhythmias, urinary retention, uh... it's kind of a big list. Which one were you thinking of?"
"Elevated liver enzymes."
So somehow my guesses from the list was less correct than her selection from the list. It's nice to be an attending and always get to be right.