An all human-grade AviCalm parrot food supplement that can help your birds during stressful times to reduce aggression, feather plucking and screaming; it has been especially successful when used in conjunction with Featheriffic. It is non-toxic and is FDA listed as safe for food. The active ingredient in AviCalm, L-Theanine, is used as a food additive in Japan to promote relaxation and a feeling of well-being without drowsiness. It is non-toxic and can not be overdosed. It is FDA registered as safe for food. Avitech uses the only certified and tested food additive form of L-Theanine in their AviCalm formulation. Avitech discovered the benefits of theanine with birds and have offered it to the avian community to help their parrots.They found through research that their Avicalm can calm down birds enough to help them stop feather plucking especially when used in conjunction with Featheriffic. The lecithin in the Featheriffic boosts the effectiveness of the Avicalm and the B vitamins, flax and amino acids in the Featheriffic helps grow feathers back. And this is why birds who are on Avicalm are not in a druggy but are calmer and less stressed leading to less biting, less plucking and less overall aggressive behavior. The best way to administer all human-grade AviCalm is with the Featheriffic on food. Even better is to double the dose of the Avicalm for the first week and then return to the regular dose after the first 7 days. Birds can eat the Avicalm right out of the palms of hands. Less effective is adding it to your bird's water as you cannot effectively control and monitor intake. But if your bird will not accept AviCalm and/or Featheriffic on their food then adding it to their water bowl is an acceptable, if less beneficial, alternative.