Neither my GP not the neurologist had any major concerns over frequent (near daily) use of triptans, but the neurologist especially would much rather prevent them in the first place.
I can, for most of the time, function without them, but it's not pleasant. No auro, etc, 'just' headache and nausea.
For those on beta-blockers, how long before they made any difference? It's my understanding that they take a while to build up.