I'm allergic to penicillin

I'm allergic to penicillin   
Collins Multilingual Translator © HarperCollins Publishers 2009
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"I realised it was because I hadn't read the box - I'm allergic to penicillin and that's what I was taking," she told Loose Women afterwards.
You recently mentioned that "penicillin is actually derived from Cordyceps." I'm allergic to penicillin. Can I safely take MycoPhyto Complex, which contains Cordyceps?
He took one look at it and said: "You definitely need antibiotics, you've got an infection that needs treating right now." He wrote me a prescription for non-penicillinbased medication as I'm allergic to penicillin, which I took straight away.
Do I have an electronic health record to warn caregivers that I'm allergic to penicillin? (I'm not, but you get the idea.)