B vitamins decay quite rapidly and even faster if exposed to light.
The good news is that for the B vitamins - particularly B2 which is the main one required for nerve myelination - are water soluble and extremely safe. Basically any excess is just removed as waste.
The vet who saw little...
I am posting a link to the thread I made for my little Bernadette who went lame at 3 weeks and recovered after a lot of very intensive vitamin B2 supplement and physical therapy.
She is now top hen so there was a happy ending but it was quite a journey.
It took 8 days to see any improvement at...