I asked Alan Glynn (the author of The Dark Fields / Limitless) two days ago on twitter if he had based it on Modafinil. His reply (in a public tweet): "Thanks

I asked Alan Glynn (the author of The Dark Fields / Limitless) two days ago on twitter if he had based it on Modafinil. His reply (in a public tweet): "Thanks - no, all made up, wrote it nearly 15 yrs ago, before I'd heard of modafinil, certainly before the nootropic boom."