Do I need to increase the dosage of prescription iron pills?

Patient : I am on the ferrous sulfate 300mg and the meds started to wrok in terms of i wasn't feeling dizzy and the headches had slown down...but after two months i am now feeling the side effects again and the dizziness are constant along with the headaches...do i need to take the pills twice a day instead of once a day?
Doctor :   I would not advise increasing the dose or iron with prior assessment of your hemoglobin status. It may require several w eeks or even months to treat anemia due to iron deficiency. Initially dosage of ferrous sulphate is 300 mg per day which can be increased upto 4 times a day depending on the severity of the anemia.

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