I'm allergic to penicillan

So my mom was gonna let me have some of her anti-biotics to take so i could start getting rid of the Mono-like Symptoms i've been feeling in my throat...( I know these symptoms , because i've had mono before....good times) anyways i take one look at the bottle and see the big bold penicillan on the label , i'm like mom are you talking about these pills , she was like yeah. so i go , I CANT TAKE THESE THEY HAVE PENICILLAN IN THEM!!! ( said in a panic voice ) she's continues to say "You'll be fine.." I laugh and go ....I'm ALLERGIC TO Penicillan...at which point she goes ..."oh...yeah." ...so basically i just saved my own life...I guess sometimes my mom just forgets that oh, i dont know , I COULD DIE if i take penicillan ?