My Geralt of Rivia statting (may be it will be useful for somebody)

[Tirs]

Geralt of Rivia, the Withcher
High Concept: Tough guy with good heart
Other Aspects: Nothing personal
                     Training from hell
                     Sword master
Problem Aspects: Friend of Dandelion
                          In love with Yennefer
                          I adopted the cosmic power
Skills
Fantastic (6): Weapons
Superb (5): Fists, Athletics
Great (4): Alertness, Lore
Good (3): Might, Scholarship, Intimidation, Discipline, Driving (horse), Endurance
Fair (2): Presence, Empathy, Stealth, Survival, Investigation
Average (1): Rapport, Deceit, Conviction, Contacts, Resources
Stunts
Riposte: On a successful defense with Weapons, you may sacrifice your next action to turn that defense into an immediate and automatically successful attack.
Powers
Wizard’s Constitution [–0]
Inhuman Speed&Recovery [–4]
Echoes of the Beast [–1]
Channeling [–2]
Feeding Dependency [+1] affects:
Item of Power [-3] (elixirs)

[narphoenix]

Don't know this guy, but Feeding Dependency is of the devil.

[Taran]

It works pretty well here.  Basically, it's addiction or fallout from using drugs.

[Tirs]

It works pretty well here.  Basically, it's addiction or fallout from using drugs.

In his case - more like hungover after using.

[Bananacake]

What exactly does the Item of Power (elixirs) do?

I don't know much about Geralt, but if it represents drinkable elixirs, Ritual (Alchemy) or Ritual (Potions) might be a better fit.

[Tirs]

Usually it's the various buffs - here is the the full list:
http://witcher.wikia.com/wiki/The_Witcher_2_potions

[Bananacake]

In that case, using Ritual (Potions) (maybe swapping his lore and fists and/or buying a refinement) with aspect-creating/maneuvering or skill-replacing potions for his potions would probably be easier than statting them up as an Item of Power.

[MijRai]

You don't need Drive, as Survival covers riding critters.  I'd also suggest lowering Fists and probably Inhuman Strength.