Not sure about anarifil but Modanfil is not speedy like amphetamines. It does not raise heartrate or effect BP unless you are dosing more than recommended which is over 400-500 a day. At least in my experience.
If the half life of anarifil is shorter than Modafinil it might be useful overall but not to dose right before a workout I take Modafinil AM and afternoon because any later than that and I stay up too late.
Remember it is a drug for narcolepsy and shift work disorder with off label uses for jetlag and as an antidepressant adjunct.
How could you be so sure CRL 40940 (flmodafinil) does not cause liver issues since it prob hasnt been studied, well now this is an old thread and I have taken CRL 40940 (flmodafinil) a few times and today actually and it is quite good for focus but I dont use it much so not much worried about liver issues. Might be some research out now though?