There's several ostensible Modafinil cofactors...
* Grape Seed Extract
* Noopept+Choline precursor
I've tried all of these, Phenylpiracetam is probably my second favorite but there's one cofactor of Modafinil that rarely gets mentioned but that you owe it to yourself to try if you want to take your Modafinil game to the next level...
Order Nicotine http://bluebrainboost.store/p/nicotine-solution/nootropics/14?campaign=Youtube
More about Nicotine http://www.limitlessmindset.com/nootropics/1289-nicotine-usp-solution
Order from ModafinilStar.com
Listen to this as a podcast on the go with the Castbox.FM smartphone app
Connect with Jonathan