"Yeah, yeah... it looks very shiny. It can even make you feel better. Trust me though, you don't want that thing."
Flagon of False Promise
Wondrous item, cursed (requires attunement)
This jewel encrusted golden flagon has useful healing properties. Alcohol drank from it grants effects equivalent to a potion of healing.
Curse. The flagon is cursed, and becoming attuned to it extends the curse to you. As long as you remain cursed, you are unwilling to part with the flagon, keeping it within reach at all times.
Once a character fails an alcohol related save they gain the poisoned condition until they receive the benefit of a Remove Curse (or similar) spell.