 [ Symptoms ] i am pregnant and have terrible heartburn is there anything i can do to get relief [ Disease ] hi the antibiotic penicillin is made from the fungus penicillium chrysogenum stilton and most other blue cheeses do use penicillium mould to create the blue veins but they use a different strain  p roqueforti  and the whole mould rather than the penicillin extract it is possible to be allergic to the drug and still be able to eat the cheese with impunity although there are also people who are allergic to both it is also worth noting that only 20 per cent of people who think they are allergic to penicillin actually are do hope this helps you good luck