after being fine for two years and not having any anxiety I couldn't solve with deep breaths and a walk, this December some potential health issues, still unanswered due to long appointment wait lists, triggered me into health anxiety that has kept me from sleeping much 

I was prescribed zoloft, and buspar as an as needed. I ended up not being able to take the zoloft because I remembered several years ago I tried it and it made me hallucinate and jittery, human zoomies. 

My psychiatrist told me to just stick with buspar as needed while I'm looking for and going through therapy. That was today.

I'm very sensitive to mental medications so I split the 5mg tab at the line and only took 2.5mg at 6pm. I felt a little strange, for ten minutes I was smiling ear to ear for no reason, that passed, my butt was tingling lmao that passed. Then I was just kinda sleepy and spacy. I didn't like the feeling it gave me but it made me feel a little calmer at least.

Around 2:30-3am I am struggling to sleep, feeling restless, my head hurts, I'm really nauseous, my heart is pounding. But it's not my  anxiety. I don't really get headaches or nausea from my anxiey, just crying, shaking, frequent urination. I didn't feel anxious I just felt sick/hungover. 

I had a hunch it was because of my body lacking buspirone, even though that seems strange because I only took it once. I just want to sleep so I split the 2.5 into half, 1.25mg, and took that, absolutely miniscule even in comparison to the previous miniscule dose. 

And within 15 minutes I'm feeling mostly better, save for sudden dry mouth and my head feeling a bit strange, not pain really, just weird. 

I really cannot understand how even with being sensitive to medication, taking such a miniscule dose could cause me to feel so sick simply because I didn't take it again 'soon enough' after taking it once? 

Disregarding how freakin' weird that is.... How am I supposed to take it as needed if I get withdrawal symptoms 9 hours later? Meh.

 I'm not really interested in seeing how it goes long term, I just need something a couple times a week for the next couple months while I get my silly brain back where it was before I was triggered, buspar is clearly not meant for that. I'll have to see what my psychiatrist is willing to give at my next appointment. 

Let's hope therapy helps.