Item Multiplier is a mod where every item in your inventory will be multiplied by this cheat engine table.

To use the table:
The first step is by downloading Cheat Engine.
Then download this table.
After that, open this table through a cheat engine.
Followed by attaching witcher2.exe to the cheat engine.
And last is to freeze some of the pointer's filled-in values.

To use the script:
Turn on the script
Dispense with your stock
Select the item you want to multiply.
Drop half of the objects you want to multiply.
If you don't want to multiply any items, deactivate the script.