While I was on Taxol my finger/toe nails turned black and the nails were seperating from the nailbeds.My doc suggested Glutmaine powder (30mg, I think) in a glass of water every morning and tea tree oil under the nail to help with the nailbeds.I could see a difference in the color of my nails as they started to grow out & the tea tree really helped with the nailbed soreness.
Hope this info is helpful.