[AnnieBL]

My reckoning is that one level half teaspoon measure (should equal 2.5 cc) of R1 powder is about 1.25 grams. This is on the basis that the 500 gram size comes in a 1 litre container and just fills it. It doesn't shake down much, so its density is just on half that of water. The powder is very fine and does tend to fly around, but a heaping teaspoonful of something fairly viscous like yogurt does take it up well and I don't find the resultant paste too hard to take although it is not exactly yummy. Fruit yogurt improves the taste but also increases the sugar content. So at 2.5gm per day (equalling 5 capsules per day), a 500gm package should last 200days (25c per day).