Great advice above as usual. My wife has a few medical conditions and we occasionally find ourselves in the ER. When they ask, "Do you have any allergies?" she responds with "phenobarb."
Most of the young nurses, corpsmen/medics, and even physicians say "huuuh?"
Then I'll say phenobarbital and most of them still don't know what it is. Phenobarb is an old school seizure medication in limited use in the US but still used in the developing world. Third world countries as they are formerly known.
The healthcare personnel will ask what the drug did to her. My wife responds. "My mom always told me I was allergic because it put me to sleep."
Doc: Really, why did she give it to you? Seizures?
Wife: No, I was hyper as a kid and she wanted to calm me down.
'doh, Mom would have been carted away these days. Anyway, the point of the story is, as advised above, if you don't have a true allergy, don't report it.
If you do though, let it be known. Life at sea or in the field with undocumented medical conditions can lead to a cancellation of one's birthday.