"Buprenorphine bioavailability was 38–44% and Tmax was 35–40 minutes after all intranasal doses."
"It is difficult to determine if observed differences in abuse potential between intranasal buprenorphine and buprenorphine/naloxone are clinically relevant at the doses tested. Greater bioavailability and faster onset of pharmacodynamic effects compared to sublingual administration suggests a motivation for intranasal misuse in non-dependent opioid abusers. However, significant naloxone absorption from intranasal buprenorphine/naloxone administration may deter the likelihood of intranasal misuse of buprenorphine/naloxone, but not buprenorphine, in opioid-dependent individuals. "
"When administered as a sublingual tablet, bioavailability of buprenorphine can be as low as 15% [
30], while a study of an intranasal buprenorphine solution reported bioavailability at 48% [
42]. In the current study, the bioavailability of intranasal buprenorphine from crushed tablets ranged between 38 and 44% "
This study states by snorting Suboxone more naloxone is absorbed, which can cause increase side effects if one is allergic or reacts to naloxone (I do and a lot of people do)
I find intranasal suboxone use to be around 2x stronger or more effective than sublingual, and before I started dosing multiple times a day one intranasal dose of 2-4 mg could hold me 24 hours easily.
Best of luck
source :
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3776483/