B complex or super b complex is carried by Walmart and grocery stores. 1/4-1/2 tablet daily crushed into food or in a spoonful of water daily is enough. Is your hen any better?
Sorry that your hen is not doing well. When you started the vitamins, did they contain riboflavin (B2?) The B complex that Wyorp Rock recommended has riboflavin and all other B’s. Riboflavin deficiency can cause walking on hocks and curled under toes, eventually curled toe paralysis. But Mareks...