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Fortitude is a Seren prayer unlocked on completion of the quest The Light Within. It is a combat prayer for use by tanks, which boosts Defence by 15%, life points by 10 plus 10 for each Constitution level in normal mode (1 plus 1 per level in legacy mode) capping at a boost of 1,000 life points, boosts hit chance of defensive abilities by 10%, adds +3% damage reduction, doubles base life point regeneration and allows regeneration in combat. The life point regeneration stacks with Constitution skillcape perk, and the life point boost stacks additively with the life point boosts from the thermal bath, bonfires, and life point-boosting equipment.

Fortitude cannot be used in conjunction with any sap or leech curses, including turmoil and its variants. Fortitude allows quick healing in bank areas if player is in combat, such as against a dummy.

Update history[edit | edit source]

This information has been compiled as part of the update history project. Some updates may not be included - see here for how to help out!
patch 9 September 2019 (Update):
    • Fortitude and Turmoil can no longer be activated together.
  • hotfix 13 February 2017 (Update):
    • It is no longer possible to use Fortitude & the Nex: AoD curses at the same time by activating them in a specific order.
  • patch 15 August 2016 (Update):
    • Standing in the bank with the Fortitude prayer active now heals during a duel for the correct amount.
  • patch 4 July 2016 (Update):
    • Fortitude, Soul Link and Teamwork Protection can now be used inside Daemonheim dungeons.
  • patch 31 May 2016 (Update):
    • Fortitude now reduces the correct amount of damage in PvP.