To put it bluntly... no. Whomever told you this has no idea what they're talking about.
Vitamins are not "alive", so they can't be "killed". That aside, vinegar is significantly less acidic than natural stomach acid.
yes
Drinking vinegar will not kill you.
stomach,because oh the acid in your stomach
Vinegar
Technically, vinegar can be used as a stimulated stomach acid, but some may think different.
Proper unpasteurised traditional cider vinegar contains the 'mother' (living enzymes), these contain vitamins E, A, B1, B2, B6, C.
Yes
Vinegar alone will not kill yellow jackets but if you mix it with other ingredients it will kill them. You will need to mix vinegar with water and liquid dish soap.
Vinegar kills plants.
Vinegar does kill dust mites. Mixing a bowl of water with vinegar will help get rid of problem dust mites.
Vinegar, vitamins, cucumbers and vinegar can all be useful in eliminating acne without treatment.
no