My beta blocker is not propanolol, and it is not extended release, and i take it for my heart, not migraines. But boy can i tell if i missed my nightly dose - the next day my ears are pounding.

I would be afraid that every other day would be like turning a faucet on and off for you. And sometimes messing with meds can make them less effective than they used to be? Ive heard that for psych meds, idk for migraine meds.

I would really encourage you to work out a med reduction or replacement plan with your dr. Like getting on lower dose that are not extended but that you might have to take more frequently. The half life of regular propanolol is pretty short.

Even tho yeah sometimes i mess with my meds, but i would not fool around with this.