Talk:Warwick/@comment-4915885-20120511204016/@comment-24.132.170.218-20120514165816

"(Active): Warwick lunges at an enemy champion and supresses them for 1.8 seconds. During this time, Warwick attacks his victim 5 times, dealing a total of 250/335/420 (+2.0 Bonus AD) magic damage (triggers on-hit effects 5 times). Warwick gains 30% Life Steal for the duration and benefits from full stacks of Eternal Thirst. Range: 700. Cost: 100 / 125 / 150 mana.

Cooldown: 90 / 80 / 70 seconds.

Extra Damage: 50 / 67 / 84. Infinite Duress is a targeted channeled blink ability that moves Warwick to a target enemy champion's location and initiates a 1.8 second channel, during which the target unit is suppressed. While channeling, every 0.3-0.4 seconds (PENDING FOR TEST) Warwick strikes his target for magic damage, and heals for 30% of the damage dealt. The lifesteal from Infinite Duress affects on-hit effect items such as Madred's Bloodrazor, unlike normal lifesteal. None of Infinite Duress's attacks can critical strike. Whilst suppressing his target, Warwick is considered to have full stacks on Eternal Thirst (this is regardless of how many he had prior). Including this damage, Infinite Duress will deal 332.5 / 340 / 347.5 / 355 / 370 / 470 / 485 / 500 / 515 / 530 / 630 / 645 / 660 (+2.0 per bonus attack damage) magic damage. This is assuming you take ranks in Infinite Duress at level 6, 11 and 16."

so yes, it does proc on hit effects and lifesteals