There is no official dosage for wry neck since it is more commonly treated by lay people who share their experiences. Most people use 400 IU of vitamin E daily, and since selenium can be overdosed, you can use a small amount of scrambled egg, tuna, or sunflower seed for selenium. Some type of wry neck is from thiamine deficiency, so good to throw in a small amount of B1 thiamine. Polyvisol without iron is used by some at 3 drops daily, but sometimes more E is needed. Since Polyvisol has other fat soluble vitamins that are not needed, we have to be careful not to use too much.