Does oral lamisil (terbinafine) interfere with the birth control pill?

Lamisil (terbinafine): Yes Lamisil (terbinafine) can interfere with birth control pills.

No risk, no worry: It's an outdated urban myth that antibiotics interfere with effectiveness of birth control pills. They do not, except occasionally with rifampin, an infrequently used antibiotic for certain infections like tuberculosis. Lamisil (terbinafine) certainly has no effect. See https://www.drugs.com/article/antibiotics-and-birth-control.html