Might 22, 2015 #three The effects actually count on the dose. I've a large amount of experience with Phenobarb, and I see that in small doses, all over 50mg-60mg, it's got effects very related, to Diazepam, and All round very unexciting. On the other hand in doses of 100mg+ it gets a great deal more exciting. It feels like currently being drunk wit