How many doses is 10 grams please? That is about 2 teaspoons worth of powder yes?
10g of NMN is 10x 1g servings, 20x 0.5g servings or 40x 0.25g servings.
The supplied 0.5ml spoon holds 125mg of NMN (0.125g) - as per the attached image. So 10g NMN is roughly equivalent to 40ml. A level teaspoon is 5ml, so the 10g packet is roughly equivalent to eight level teaspoons.
Please note that these calculations are rough, and NMN is sold by weight not volume.