Take into account that when using a CBDA tincture/oil by mouth, the product might cause a sensation in the mouth much like a bitter flavor or burning/tingling sensation. This is a regarded result of CBDA (and in some cases CBD) and is likely associated with its actions on TRP ion https://dantefrwaf.ampedpages.com/how-cbd-cannabidiol-can-save-you-time-stress-and-money-59810097