Caber is harsh but is the easier of the two as far as dosing goes. Prami is peculiar you can get nausea/dizziness the first few times and you have to dose it ed and rump up the dose slowly. Personally i love caber since you can dose it twice per week without feeling faint or nauseous. Problem is caber is much harsher in your heart valves than prami is. Also prami can be addictive best to use it in short runs only and taper down before you stop it. Caber has a better effect on your downtime between sex sessions as well so overall is the better libido enchancer. I would go with caber if you havent tried any of them. If your npp dose is low enough (less than 500mg) 0.25mg caber e3d will be more than enough. Best part of caber is the multiple orgasms but that feeling can be dam addictive.