• Fish oil is also known as Omega-3 fatty acid.Dry fish on a dish in the form of a fish image by terex from Fotolia.com
  
  

Two Grams a Day

• If you are taking a supplement, you should have no more than two grams of fish oil per day, according to Dr. Katherine Zeratsky of the Mayo Clinic. If you plan to consume fish oil from regular food, you should have no more than three grams per day.
  
  

It Depends On Your Needs

• People who have certain conditions, such as those who have a high amount of triglycerides, may need to take up to four grams of fish oil per day, according to the American Heart Association. People with coronary heart disease need about one gram per day.
  
  

Bottom Line

• Humans need between 2 and 3 grams of fish oil per day, according to the Mayo Clinic, but this can change due to health problems. However, you should never exceed 3 grams of fish oil per day with the supervision of a doctor as it can cause internal bleeding.