Folic Acid

Hello, good morning mommies. I am 8 weeks now and went to a private clinic for my first check up last 2 weeks. I was prescribed 5mg of folic acid once a day and this is the first time ever im taking folic acid. When I googled, it says good to take 400 - 800 mcg of folic acid a day. Is 5mg alot? Anyone else taking 5mg of folic acid? Im just curious and concerned if higher dosage can have any side effect or not.