Countering vlad?

I tried inflicting grievous wounds on him but his crimson rush Q basically laughs it off, here's the info from the wiki

Active: After a 0.25-second delay Vladimir drains the lifeforce of the target enemy, dealing magic damage and healing himself.

Magic Damage: 80 / 100 / 120 / 140 / 160 (+ 60% AP)

Heal: 20 / 25 / 30 / 35 / 40 (+ 35% AP)

Each cast of Transfusion generates a stack of Bloodthirst over its cooldown, which is displayed in his secondary resource bar. At 2 stacks, Vladimir gains Crimson Rush for 2.5 seconds and 10% bonus movement speed for 0.5 seconds.

Crimson Rush: Transfusion deals 85% increased damage and heals for an additional 30 - 200 (based on level) (+ 5% (+ 4% per 100 AP) missing health), reduced to 35% against minions.

Empowered Damage: 148 / 185 / 222 / 259 / 296 (+ 111% AP)

SERIOUSLY?! 111% OF HIS CURRENT AP?! you fucking serious? with healing 35% of the damage he basically can laugh off the grievous wounds and ignite effects, how do we even counter that?

now if I were to go over the sanguine pool as well this'd turn into a text wall, and I don't think anyone wants that.