The reason people get Lovaza, instead of fish oil from the health shop, is because they can get it free on insurance from their doctor.
Lovaza is a patented drug, according to the FDA, and therefore its available on prescription.
Taking 4 capsules a day will cost your healthcare over $3,000 a year and its a massive moneyspinner for Glaxo who make it. I remember once stumbling on a pharmaceutical rep's site where one rep was boasting he was making $20,000 a month on bonuses for getting doctors to prescribe it.
http://www.wellsphere.com/heart-heal...rip-off/534837