To be really serious for a second?

My GF became allergic to the elastic in her undies and not only that, allergic to dyes.

She had rashes on her body where the elastic on the underwear rested on her skin. The doctor told her to take Benadryl.

She called me up one evening and was totally scared, she said she felt like she was going to die. Turns out that the Benadryl she took to stop the reaction to her rashes almost killed her.