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!