title: Choose the right omega-3 supplement for heart health.  Certain brands may be useless at best, dangerous at worst.  Here's what you need to know before you buy an omega-3 supplement.
mesh_terms: D019587:Dietary Supplements / Q000009:adverse effects / Q000145:classification*; D015525:Fatty Acids, Omega-3 / Q000008:administration & dosage* / Q000009:adverse effects / Q000145:classification*; D007722:Health Knowledge, Attitudes, Practice; D006331:Heart Diseases / Q000517:prevention & control*; D006801:Humans; D004366:Nonprescription Drugs / Q000008:administration & dosage / Q000145:classification; D017060:Patient Satisfaction; D012449:Safety; D014481:United States
chemical_list: D015525:Fatty Acids, Omega-3; D004366:Nonprescription Drugs