Um, I just drink it straight.

And regularly brush with baking soda, not toothpaste. Mouth pH is in a better place. Not acidic all the time. A little acv seems less of an impact than a chronically acidic environment.

Eating lc also moves mouth pH, but baking soda is even better. And softer on the teeth than any toothpaste.

Maybe suck it down with a straw, or dilute with water.