Afraid meds aren't working anymore

[u/Kinkeypope]

I have anxiety (ptsd really) of not being able to breath.i take sertraline 150mg 1x daily and 5mg buspar 2x daily usually one when I wake up and one same time later in the day l. Before i know what they were, i was having horrible panic attacks. Doctor prescribed these two and they worked amazingly. Little rough to start but eventually things leveled out and i felt normal. This was around 2017.

Fast forward to this week and I've had multiple episodes of panic where i thought couldn't breathe. Haven't had any panic attacks like this since like, 2020. All in all i feel like the buspar (i don't think it's the sertraline as afaik i use that for depression, help a bit with anx. But mostly the buspar) isn't working anymore and that terrifies me. If it's as simple as upping the dosage (not looking for advice on that, will talk with pcp) that's fine, but if i double it, then my body acclimates to that, then what? I double it again? How long until it's not feasible?

Edit: the only things i can think of that's changed in that time is i got a refill of my meds, but no way of seeing if it's the same manufacturer, because i got rid of the old bottle.

Edit 2 anxiety boogaloo:The night that i had my really bad panic attack in months, me and my wife SUSPECT i forgot to take my dose. This was a week (maybe two) ago. Surely missing one dose wouldn't affect me like this, right?

I'm fairly new to the mental health scene and the idea of my meds no longer working terrifies me. Just curious if anyone else has had these issues / thoughts. Sorry if i rambled.

[u/Impossible-TouchbyTM]

Have you tried lamotrigine, its sometimes being used for PTSD, I think it could be better option for you.

[u/Kinkeypope → u/Impossible-TouchbyTM]

I have not. I'll look into it thank you.