<s>[INST] My father in law was told to take ferrous sulfate Tab Iron Sulfate 325 mg ( 65 mg iron) after meals and after hs. Can you please tell me what hs is and is this available over the counter? His diagnosis was Anemia Iron Deficiency and also told to take Vitamin D3 (1,000 unit) and Vitamin B-1 ( 100 mg) [/INST] Hi, dearI have gone through your question. I can understand your concern.Your father has iron deficiency anemia. SO he need iron supplements. Ferrous sulfate or ferrous fumarate can be used. He should take iron rich food like green leafy vegetables, jeggary, dates, dry fruits etc. e may also have vitamin d and b12 deficiency so he prescribed supplements. Iron tablets and vitamin b12 can be taken as over the counter drugs. But consult your doctor and take it accordingly.Hope I have answered your question, if you have any doubts then contact me at bit.ly/Drsanghvihardik, I will be happy to answer you.Thanks for using health care magic.Wish you a very good health. </s>