Healthy birds who are fed a balanced, avian diet normally don?t need added vitamins. However, if seeds are their main diet, or they’re experiencing stress, sickness, or other factors, Avi-Era Bird Vitamins can help. The formula contains all 13 essential vitamins for birds, including vitamin A, vitamin D3, vitamin E, niacin, vitamin B12, vitamin H, vitamin C, plus other essential nutrients. Mix with water as directed or mix into food your bird will eat completely