It is necessary to respect a duration for a royal jelly cure. If the treatment is too short, it will have no long-term effects and conversely, if your treatment is too long, there will be no more effects on your body.
It takes at least ten days and up to 3 months for an effective cure.
As for the frequency of cures, there is in principle no limit but two cures per year (if necessary three) are enough to keep you going throughout the year.