I weighed her and went with the dosage by weight. I gave her a pea sized 2-3 times a day (this was the goat selenium) then gave the b complex 1 x a day mixed with water and sometimes just added to her food too.
This happened to my girl too. Kept her inside and gave her b complex and selenium & vitamin E (from tractor supply for goats) she got better in about a month! I think the b complex helps more if it is neurological