I'm not even sure I ever really understood how synthehol was supposed to work. It's not like alcohol free beverages today with no intoxicating effect at all, correct? But if it is intoxicating, what's the difference to regular alcohol? Can you just shake off its effects? Or is it just less damaging for the human body? Also, is synthehol one particular brand/taste of beverage or does it come in varieties, like synthehol-beer, synthehol-wine or synthehol-whiskey?
Apparently, synthehol wasn't supposed to cause debilitating intoxication in most species. Timo quoted Data's description in "Relics." To add to that, in TNG "Up the Long Ladder," Worf makes a remark about "all of the deleterious effects" of real alcohol, in contrast to synthehol. And TNG "Family" has this exchange:
ROBERT: Careful. You're not used to drinking the real thing. This synthehol never leaves you out of control, is that so?
PICARD: That's so.
In VOY "Someone to Watch Over Me," the Kadi ambassador Tomin gets quite drunk and passes out from synthehol.
NEELIX: I thought synthehol wasn't supposed to have this effect on people.
EMH: Most people. The enzymes that break down synthehol aren't present in his bloodstream.
Also, Timo mentioned the effects of synthehol on Seven of Nine. Apparently her Borg enhancements made her body process the stuff differently than other humans. In "Body and Soul," the Doctor in Seven's body said, "Seven's unique physiology is... unique. It doesn't react well to synthehol."
Roddenberry said that synthehol as a general substance was invented by the Ferengi. But this was never stated in any episodes. It is used in a variety of beverages, such as the fake Scotch served to Scotty in TNG "Relics," "a light ale of Earth origin" in TNG "Hollow Pursuits," and the champagne that Seven of Nine drank in VOY "Timeless."
And then there was a beer analog called "synthale" which appeared or was mentioned several times in DS9. O'Brien preferred the "extra stout" type. Presumably, synthale is ale produced with synthehol instead of real alcohol, but that is never explicitly stated in any dialog. In "Emissary," Quark said that the Bajoran version of synthale was "dreadful."
Kor