Supplements generally arent recommended unless you have anemia caused from iron deficiency. Excess iron can damage organs and cause side effects such as constipation and heartburn, so its important to follow your healthcare providers dosing instructions and to pay attention to the form of iron they suggest, as there are many available (ferrous sulfate, ferrous fumarate, ferrous gluconate, etc.) and not all will be ideal for you
Anemias can be caused by deficiencies in different micronutrients, such as iron, folate, vitamin B 12 , vitamin A and riboflavin, but iron deficiency is the primary cause of anemia during pregnancy (1)
Your doctor will determine the right schedule for you
At Liv Hospital, we offer detailed advice on Vitamin B12 injection amounts and how to dose them
The usual dose is between 1 mg and 2.5 mg per dose