Well if you take a flat teaspoon of
phenibut, and remove approximately half of the powder you'll have around 1.5-2g of
phenibut. This is a good amount for some people but depending on your preference you may want to knock it down to 1g. It'd be nice if scoopers could be included in powders but otherwise you'll have to fumble with teaspoons, or cap them.
I think for most people 1-2g of
phenibut should be enough. Those who've taken benzo's or higher doses of
phenibut may differ because they've built a tolerance to
phenibut and might not feel the same effect at that dosage.
*Individual results may vary though*