I have been on Imbruvica for 9 months and am having hair loss and problems with nails. I notice some posts about Biotin and will look into that. A week ago I started treating my nails with Nailtek 4 and cuticle oil. I am noticing they are getting stronger and growing longer. You can order on Amazon. Did not see any posts about treating hair loss. I hope my hair loss stops soon. Even so, i am thankful that Imbrutinib is available and working for me.