Yes, the Exhaust Phial deal stun/concussive damage to monsters which is a big help in hunts since you can actually KO monsters by just spamming the morph combo of Swagaxe. You can
Sleep/Slugger/Exhaust SA meme build, now improved with the Safi update : r/MonsterHunterWorld
Monster Hunter Rise best weapons tier list | GamesRadar+
New Horn User Question: Does sharpness affect KO/Stun values like it does for regular damage. i.e. will white sharpness yield 12%[I think it was 12] higher KO/Stun values? : r/MonsterHunter
MHW: ICEBORNE | Best Skills For Hammer - GameWith
MHW - Best Iceborne Hammers Ranked - Nerds & Scoundrels