With some mod or configuring game files? I have eye problems and can't play with this effect, so I have problem finishing the quest with killing plants in first chapter. And if there is no way, could someone finish the quest for me if I upload here my save?

There's a potion called Wives' Tears that makes Geralt sober instantly. One of the nice things about this game is that you can make any potion if you have the right formula, yourself; GERALT doesn't have to have gotten the formula in the game to be able to make something. For Wives' Tears, mix one Rebis, one Aether, and one Quebrith, and you'll have the potion. (It'll be called "Unknown potion" until you drink it the first time.)

The Witcher Wiki article on Wives' Tears is at http://witcher.wikia.com/wiki/Wives%27_Tears

If you aren't in a position to meditate and make the potion, you can use the Saved Game Editor (http://en.thewitcher.com/forum/index.php?/topic/7328-tw1tool-save-game-editor/ ) or the Genie Wish Mod (http://witcher.nexusmods.com/mods/246/ ) to get the potion. The Saved Game Editor lets you add the potion to your inventory and is a very useful tool, but people sometimes have trouble installing it. The Genie Wish Mod gives you an item that lets you call up a genie and wish for items, and the Wives' Tears potions is one of the things you can wish for.

I added the torch to my equipment in game editor and it shows as item without description and can't be equipped. There is only name, Torch. Why is that?

There are TWO items in the game named "torch," and one of them is broken. You need the other one. The other one's item name makes it look as if it's a club, but it's not.

So, did you give yourself Wives' Tears? Did it fix your problem? It's nice to say thank you when people help you, you know, before asking for more help...

Yes, thanks.

No Drunk Effect mod (5kb) Created by Carlitox25:
https://www.nexusmods.com/witcher3/mods/4882

Better late then never :P