Hi there!

I got a small question concerning alchemy: Does the fact that I'm able to combine special ingredients depend only on my alchemy level? Or are there any other requirements?
For example: I'd like to combine Imp Gall, Spiddal-Stick and Vampire Dust but I can't. My alchemy level is 100 but after I selected the first two ingredients the Vampire Dust is gray and I can't choose it.
What's the clue?

Thanks for help!

I think it's because that vampire dust has no effect in common with the first 2.

There is a show all button on the alchemy screen that will let you select other ingredients.

So if you add two ingredients and then want to add a third and fourth with no common effects just hit the show all and add the third.