Nope. Vitamin D doesn't seem to be an important one.
This has been the best answer I have found.
"I have had my dealings with Wry Neck, it's a horrible sight to see them go through but I must advise you, they get worst before they get better. Here's how I treat them, First 1 full vitamin E, I usually give this at night. I usually try to put it directly on there beaks and let them drink it. It takes a long time to get the whole thing down because they don't care much for it, but you have to keep working with them. Then I give them 2 drops of Polyvisol without iron. make sure they drink it, which they usually do because my chickens for some reason LOVES the Polyvisol. I will give them this in the morning and at night. Since I work during the day it's hard to give them it for a third time but if you can give the polyvisol 3 times a day at 2 drops each shot that would be great... Some of my chickens that have had wry neck, will recover quickly, but I have had some that would get worst and worst each day to the point of "this chicken is not going to recover". then after about the 5th day sometimes longer. BOOM they start to hold there head up and recovery is on the way. It's very frustrated and heart breaking because you think what else I can I do. But if you stick with it, perhaps they will get on the road to recovery...
To get them to eat, I would take there food soak it with water until it's completely liquidfied. Then you can take a dropper and feed them that way. I would do this until "recovery" has occurred or they start to eat on there own. By soaking there food and giving it to them with a dropper not only do they get some food but also water. Just do drop by drop... Patients is a Priority because it does take a while before they improve.. Hope this help, good luck, please keep us updated..."