For patients there is no better advice but to go with their doctor's. Having said that various doctor's prescribe different medicines post op. For example some advise to take biotin, finasteride n minoxidil whereas some suggest to take topical finasteride with neutriderm anti hairloss lotion and biotin but not just biotin...tablets with other supplements & biotin, like grape seed extract, saw palmetto, iron,zinc etc etc...
So the question is what are the best ones that a patient to take.