B complex dosage is 1/4 to 1/2 tablet a day, giving orally or crushed into a small amount of food. Any excess is excreted through the kidneys, so hard to overdose. Poultry Cell is okay for several days, but could cause loose poops after that. Read the label on the poultry cell, as it contains a lot of the same vitamins as B complex. B complex is better and has larger amounts of B’s. Is she eating and drinking, and able to get to food and water? Watch to see that the others don’t go after her, since she is acting different. Sometimes we need to separate them in a dog crate or pen with food and water within reach.
How old is she and how long has this been going on? Could she have been injured by a rooster or hen? Is she molting?