ACV: Apple cider vinegar(ACV) has acetic acid that can improve digestion. SIgns of low acid and high acid are similar so you may be having low acid and need the extra acidity. read more
Apple cider vinegar, like all vinegar, is fairly high in acetic acid. If you are in otherwise good health, it's unlikely to cause liver damage. However, drinking a lot of vinegar may cause some irritation to your stomach or esophagus over time. read more