Check the ingredients list but I don't think you'll want to use that.  You'll want no ingredients except sodium chloride and water i.e. no wetting agents, no preservatives, etc.  I use is the 0.9% sterile wound wash/irrigation made by Baxter; and believe there's a second manufacturers.   You can search my posts with keyword "Baxter" to find a link to where I purchased.
I didn't find anywhere other than online, so I'd suggest ordering and then buying distilled water (DW) for immediate use (which you'll want anyway).  I personally use a base of 80% VG + 15% DW + 5% Saline; then add VG nic and flavors.  This works very well for me.   Pending arrival of saline, just use 80% VG + 20% DW. 
You're probably okay on the vodka as typically <2%.  Besides extra Vanilla is never a bad thing!  Mix in proportion with VG and no flavor to see if you can detect. 
 Good luck!