Beating Dead Horse - Glowing Wurm Bile

[BattleToad]

Killed 20-30 young Shardwurms and a few elders yesterday.

None of them have a glow effect.

Still haven't seen a single Wurm Bile.

I'm pretty sure it's not dropping.

Also a hunch that Drakkel Wolf Whisker isn't dropping from Great Divide Drakkel Wolves as well.

[BattleToad]

Over the course of the day today I killed 100 Young Shardwurms on my Beta Ranger.

Shamewow aka Ephin also killed some Young and Elder Shardwurms too.

Ephin got a White Scaled Leggings, a Shardwurm Skin, and a Shardwurm Eye on his kills.

I didn't see any of these drop during this run but have seen them previously.

On average 0 to 3 loot drops per kill. All drop plat.

Meat could be two pieces on one corpse. I think I recall seeing two Shardwurm Claw on one body prior to this trip.
One corpse also had 1 Meat, 1 Claw, 1 Fang.

Results for 100 Kills

Nothing - Many
Gems - 0
Shardwurm Meat - 47 pieces
White Scaled Tunic - 1
White Scaled Leggings - 0
Shardwurm Eye - 0
Shardwurm Skin - 0
Shardwurm Stinger - 6
Shardwurm Claw - 7
Shardwurm Fang - 9
Glowing Worm Bile - 0

Overall the caster armor pieces are fairly rare drops, Wurm Meat is close to 50%, while the junk weapon and the other quest items look to fall in with a 5-10% drop rate.
I imagine the Bile yield would be similar to this but I'm sure they are bugged and not dropping.

[Alunova]

I've confirmed this myself multiple times, I've camped 3 myself just to make 300% sure. I would not bother with the young worms though.