Mycostatin does not contain any penicillin. Mycostatin is an antibiotic that attacks fungal infections, something penicillin is not good at, and in fact penicillin may indirectly encourage a fungal infection.
penicillin and mushrooms are not similar, the ingredients psilocybin and psilocin are similar in spelling but are vastly different, you should be fine, if you are feeling very paranoid then eat a...
No, Varenicline is indicated for smoking cessation because it has nonaddictive nicotine in it, which helps you quit smoking. so no it doesn't have penicillin in it :)