Same here. I’ve been prescribed .5mg Lorazepam since 1992, after heart attack with vfib. Only take one when feeling very stressed. Twenty pills last me about six months.
Without diving much deeper into this subject, I was originally prescribed 1 mg. x 4 per day. That lasted about 36 hours intil I went full zombie and my doc and I tweaked it one-on-one to get the dosage correct. As with any sort of CDS, it can be dicey at first. I refill mine only when I get a notice, but I do keep a stash of them, just in case.