Hopefully she'll improve with the vitamin therapy.It's very strange. Except for stumbling when she walks, she is alert, eating, drinking, pooping normally. Her comb is bright red and eyes clear. How one morning she could wake up not being able to stay up on her feet seems so odd. The vet checked her over thoroughly - no sign of injuries from the other hens and heart and lungs are strong, she said. We're giving her the anti-inflammatory medicine she prescribed twice daily as well.
Often it's hard to know what causes sudden symptoms like that unless you lose them and investigate further through necropsy at your state lab.
Keep us posted on how she's getting along.