Review (5/5): Works
It is a fart deodorant. It prevents the smell from killing those around around you. I can confirm it works with all the usual offenders: broccoli, brussels sprouts, beef, fish, dairy, etc. I don't eat beans but probably works for those too. I have done some research into farts and it appears that the compounds in the food you eat are what make the stench (separate from the gas itself - methane apparently has no odor...), and this does something to neutralize that.
You do need to have a couple throughout the day for it to work - can't just take one and hope for it to work, I usually have 2-3 per day for it to work perfect; 4 if I'm eating a lot.
I will state very adamantly though that I was extremely disappointed that you can buy it direct from the company that makes it, Parthenon I think, for 13 bucks a bottle. Yes, you must pay shipping, but it's highway robbery to charge 50% more for no additional value [as of this writing, I'm only seeing it for 20 bucks per bottle at its cheapest, in a 2-pack]. I only figured that out when one of my orders was "undeliverable" for a "technical reason" which caused me to identify other sources of it.