I'm guessing any 9 tabs a month limit is related to minimizing the chances of developing rebound headaches more than anything else, an issue that should be addressed by your doc rather than your insurance company imo. After all, generic sumatriptan can be really inexpensive without insurance. You can get 9 tabs at WalMart for $18 with a GoodRx coupon. Even better, Mark Cuban's Cost Plus Drugs program lists 30 tabs for $11. Don't know what dosage you're using, but during a period where I didn't have health insurance (before things like GoodRx or Cost Plus Drugs) I had my MD prescribe the 100mg tabs and I'd split them, essentially doubling my supply.
Just curious: if you're experiencing more than 9 migraines a month, what is your insurance provider's stance on covering one of the CGRP drugs for prevention instead of using a triptan for treatment? Unfortunately, the CGRPs are too new for generics so I'm guessing they're probably pretty resistant to covering them, but in light of the public's reaction to the Brian Thompson assassination I'm wondering if we might start to see companies start to loosen up some on what they're willing to cover.
*Given that it might feel like I'm pushing triptans to the general public, I feel like I should include the following disclaimer, as well as remind people to consult their medical professional rather than to listen to internet idiots like me lol:
Triptans are contraindicated in patients with cardiovascular or cerebrovascular disease. A consensus statement by the American Headache Society, based on review of the literature, indicates that rates of triptan-related cardiovascular events are low, and that triptans are likely safe among patients with no known cardiovascular risks.
edit: as soon as I posted this I remembered that your sister is an MD, isn't she? So all this is probably wasted on you, but it might be of interest to other migraine sufferers out there.