Folic Acid Needed During Pregnancy

Hi,

I want to know till what time folic acid tablets/capsules should be taken during pregnancy ?

My wife is on the 7th month. And now she shifted to hometown(Orissa). Previously she was undergoing treatment in Bangalore.

So, the doctor in bangalore used to give 3 tablets i.e
1. Iron + Folic acid -- Folic acid amount is 1.5 mg
2. Calcium
3. Folic Acid -- Folic acid amount is 5 mg

But now the doctor in Orissa gave only 2 tablets i.e.
1. Iron + Folic acid -- Folic acid amount is 1.1 mg
2. Calcium

So, want to know if I need to take extra folic acid as suggested by the banaglore doctor since I have heard that we need to take folic acid till the delivery.