Royal jelly is a very sensitive substance. If stored fresh, it has to be in a fridge. Recommended dosage is 1 g daily for adults, 0,5 g for children older that 5. If given to newborns, dosage is calculated according to its weight (0,01 g per kilo).
In our family, we mix royal jelly with honey and take it once a day, a teaspoon in the morning.