Feels weird but it works!.
I bought this a while ago and misplaced it, found it again the other day. Finally managed to deep throat again for the first time in years.
The bottle isn't the most convenient, it's a bit tricky to get it just on the back of your throat, and it doesn't taste or feel great to start with. But it starts working quite quickly, and it almost completely suppressed my gag reflex - I could definitely take my partner's cock in my throat deeper and more easily than without it.
Numbed perfect, worked really well, only downfall is the taste