A typical fish oil supplement contains about 1,000 milligrams (mg) of fish oil. This includes about 300 mg of EPA and DHA combined: 180 mg of EPA and 120 mg of DHA. However, doses vary by product.
Children (4-12 years): 250–500 mg of combined EPA and DHA per day. Teens and adults (13-64 years): 500–1,000 mg of combined EPA and DHA per day for general health; higher doses (up to 3,000 mg ...