<s>[INST] Hi doctor, I am paromita. I have hypothyroidism problem and taking eltroxin 100 mg. I am suffering hair falls problem from last two years. 8 months  back I checked my iron, it was good but serrum ferritin level was 17 . so I was taking fefolz and after 4 month ferritin lebel increased to 36. Then I stopped my medicine and now again my serrum ferritin lebel is 23. my hair falls has increased. So what should I do now ? How long I should take iron tablet? [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. I would recommend taking Ferritin injections which are better absorbed into the system. Ferritin and thyroid are very important factors for hair fall and must be corrected accordingly. Subsequently you could also consider doing PRP (platelet rejuvenation plasma) therapy where your own plasma which is rich in growth factors and platelets is injected into the scalp which further reduces the hair fall, strengthens the hair follicles and stimulates new hair growth. Alongside also start applying topical Minoxidil 5% every night on the scalp which also stimulates new hair growth. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Smruti Pevekar </s>