Tabs ideally possess no discernible taste. Pure LSD lack of taste or odour. If you happen to detect a bitter or unpleasant flavour or experience tingling or numbness in the area where you're holding the tab, it is likely the substance is not pure LSD.
Should you identify a distinct taste from your tab, remove it immediately. This taste could indicate the presence of a compound called 25I-NBOMe, which, while producing effects similar to acid, poses significantly greater risks.
To preemptively address this concern, employ a reagent test kit to assess a small portion of your tab before consumption. Taking this precautionary step can help ensure the purity and safety of the substance you are about to ingest.