This article is about the original 40-man version of Loatheb introduced in Patch 1.11. For the 10 and 25-man versions of the raid boss introduced in Wrath of the Lich King, see Loatheb.
Image of Loatheb
Race Fungal monster (Undead)
Level ?? Boss
Reaction Alliance Horde
Location Plague Wing, Naxxramas
Naxxramas (Classic)
Spider Wing

Grand Widow Faerlina


Abomination Wing



Plague Wing

Noth the Plaguebringer
Heigan the Unclean


Deathknight Wing

Instructor Razuvious
Gothik the Harvester
The Four Horsemen


The Four Horsemen

Lady Blaumeux
Thane Korth'azz
Highlord Mograine
Sir Zeliek


Frostwyrm Lair



Other NPCs

Tarsis Kir-Moldir
Master Craftsman Omarion
Mr. Bigglesworth



Loatheb is a Fungal monster boss in Naxxramas.

Attacks and Abilities

  • Corrupted Mind — Loatheb places a 1 minute linked cooldown on all healing spells, including cleanse/dispel/remove poison. This means you only get 1 healing spell to cast per 1 minute, including cleanse/dispel/remove poison. Essentially, any beneficial spell cast on a friendly target is affected.
  • Poison Aura — 5 yard range. 196 Nature damage inflicted every 6 seconds for 12 seconds. 12 seconds between each poison aura.
  • Inevitable Doom — Loatheb begin to cast it after 2 mins in fight. Inflicts 2550 Shadow damage after 10 sec. 100 yards, every 30 secs. 5 mins after engaging, this will be every 15 secs. This debuff cannot be dispelled, cleansed, or decursed and the damage cannot be resisted.
  • Decurse — Every 30 seconds, starting at about 2 seconds in fight, Loatheb will remove all curses on himself.
  • Fungal Bloom — Critical-hit chance increased by 50%. Spell critical-hit chance increased by 60%. Spells and abilities cause no threat. Get from environment, you can control who gets it. 90 secs duration, spawns every 12 secs, every time only 5 people can get it.


The encounter with Loatheb is fairly straightforward in theory but much harder in execution due to the high amount of DPS required.

Healers will only be allowed to cast one healing spell every minute. This means healers will only be able to heal the Main Tank while the rest of the raid must use consumables to stay alive. Healers should set up a rotation to determine when and who heals the tank.

Loatheb has an aura that deals Nature damage to players and pets in melee range. It's important to have [Judgement of Light] or [Poison Cleansing Totem] active at all times since melee must save their consumables to recover damage taken from Inevitable Doom.

Groups should be assigned an order to kill Spores for the Fungal Bloom debuff. Spores spawn every 13 seconds on the opposite side of the room from the majority of the raid/Loatheb.

All players must use consumables to survive the Inevitable Dooms. Players will need to use Bandages and Healthstones or Whipper Root Tubers. Note that Greater Shadow Protection Potions, which used to be consumed at least two minutes before the encounter, have been changed to have a 2 minute duration (from 1 hour), and can no longer be used in this way.

Inevitable Doom is cast every 30 seconds after the first 2 minutes of the encounter. 5 minutes into the fight, it's cast every 15 seconds.

The order of consumables should be as follows.

Time Consumable used
Prior to encounter  [Greater Shadow Protection Potion]
2:10  [Greater Shadow Protection Potion]
2:40 Nothing
3:10 Bandage
3:40  [Healthstone] or  [Whipper Root Tuber]
4:10  [Greater Shadow Protection Potion] and Bandage
4:40 Nothing
5:10 Bandage
5:25 Anything

Depending on how much health a player has, the Inevitable Doom cast at 5:15 may mark the final 10 seconds before the debuff kills that player. It's very unlikely a player will survive another doom when it hits at 5:40.


  • Lightwells are not afflicted by the cooldown, so you can use them to heal people who are about to die.


Tier 3 Loot Tokens
Inv misc desecrated clothpants.png [Desecrated Leggings] Inv misc desecrated mailpants.png [Desecrated Legguards]
Inv misc desecrated platepants.png [Desecrated Legplates]
Loatheb Loot
Inv jewelry ring 48naxxramas.png [Band of Unnatural Forces] Inv staff 13.png [Brimstone Staff]
Inv trinket naxxramas05.png [Loatheb's Reflection] Inv jewelry ring 52naxxramas.png [Ring of Spiritual Fervor]
Inv weapon halberd 04.png [The Eye of Nerub] Inv qiraj jewelblessed.png [Splinter of Atiesh]

You receive 100 reputation with the Argent Dawn at all reputation levels.


Killed first
Kel'Thuzad yells: Who dares violate the sanctity of my domain? Be warned, all who trespass here are doomed.
Killed second
Kel'Thuzad yells: Fools, you think yourselves triumphant? You have only taken one step closer to the abyss!
Killed third
Kel'Thuzad yells: I grow tired of these games. Proceed, and I will banish your souls to oblivion!
Killed last
Kel'Thuzad yells: You have no idea what horrors lie ahead. You have seen nothing! The frozen heart of Naxxramas awaits you!


The word "Loatheb" is an anagram for "Healbot" and considering his abilities, this is likely an intentional joke by the developers.

Patch Changes

External links