Bleak Venom

The  is a consumable item in Fallout: New Vegas.

Characteristics
Bleak venom is a lethal hemotoxin that causes considerable damage to a target, dealing 150 damage to it over a span of 10 seconds. Like all venoms, it can be applied to any unarmed or Melee Weapons (including thrown weapons) to allow you to envenom a target on a successful hit. Note that one dose of poison lasts for one strike or thrown projectile only. Bleak Venom is the second most deadly of the poisons available in the main game in terms of raw damage, second only to the Lethal variety of Cloud Kiss, making it extremely useful for dealing with high-level and heavily-armored foes as well as those regenerating hitpoints due to radiation or some other effect.

Location
This item is made at a campfire. It requires 3 Bark Scorpion Poison Glands, 1 Cazador Poison Gland, 1 White horsenettle and 50 Survival skill to create 3 doses.