Hi caz,
Partner finished a 90-day course in oral terbinafine (Lamisil) last year with spectacular results on several 40 year miserably fungoused nails....worked beautifully.
I wouldn't expect much of an interaction but I WOULD take them at different parts of the day lest the strong acid mangle the chemical structure of the fungicide (hideously expensive in the U.S.A) in your stomach.
I recommend you get a bottle of topical Lamisil OTC and apply it adjunctively for the next six months (even after you stop the 90 days of the oral) every day after abrading the nail (nails) surface lightly with a course emory board...Give the fungous a double whammy...you don't want to have to repeat the terbinafine because it's so hard on the liver (don't bother telling your doctor about the topical application...their brains are soooo delicate


!) The bottle costs around $10 American...get a tiny artists brush to spread a drop (dropper bottle) completely on your nail...no polish for the treatment period!
Good Luck to you!