The generic is Budeprion XL 300, and concerns over its effectiveness date back to 2007 when patients started complaining of multiple side effects, including headaches, anxiety and insomnia.

FORBES: FDA Pulls Generic Antidepressant for Ineffectiveness

Both over-the-counter antihistamines and prescribed epinephrine auto-injectors have an expiration date, after which their effectiveness diminishes.

CNN: Food allergy diagnosis: What parents should know