Running 10iu of opti is actually I think would be nice & easy and not unpleasant like many other generics, honestly I personally have no sides upto 6iu and 8iu just a little daytime sleepiness, while I haven’t run 10iu for any extended time my experience with opti at the dosages I have run lead me to believe 10iu would be fine. The purity and lack of dimmer content make for very nice sides.There is no way I’d be able to run 10 iu of this.