Can I Take Curlzvit For Hair Loss And Sudden Greying Despite No Improvement With Becozinc For B12 Deficiency?

Hi, iam 37 yrs old( female) suffering from hair loss and noticed sudden greying of my hair.after blood test due to B12deficiency doctor prescribed Becozinc tablets but no difference in my hair fall.pls suggest any medicine.can I take curlzvit for my issue?