[Terry L Smith]

One other thing: the ‘mycin’ family of drugs work, for those allergic to penicillin and its derivatives, like me.

[farming pharmer]

One other thing: the ‘mycin’ family of drugs work, for those allergic to penicillin and its derivatives, like me.

There is no 'mycin' family of drugs. It was a marketing term. For further reading: Penicillin