Since you are a NAVY Veteran, if you haven’t already done so, check with the VA to see if the Drug you require is on their Formulary List.
That might be an option for you. My Father is a WWII NAVY Veteran and some Years ago he went to the VA and he received some Prescription Drugs that were Cheaper than he was Paying through his Medicare Coverage.
In the age of Obamacare, things may have changed but hey, it doesn’t hurt to ask.
I guess I need to reconcile myself to going and trying the VA even though this is nothing service related. I haven’t been to the VA since 1970. Yikes. Now I feel older.