Dr. Lindsey indicates that a patient should not be having an anaphylactic reaction due to a medication they are taking. The medication mentioned, digitalis has nothing to do with treating allergic reactions, and can even trigger an allergic reaction itself.
Near the end, while Anne is talking to Richie in the training club. When the camera is turning around them, we can clearly see the reflection of a man on the desk window.
Dr. Anne Lindsey refers to a patient taking digitalis. Digitalis is a genus of about 20 different plants. The medication is called Digoxin.