I have been taking fish oil for many years and have tried the expensive brands to the cheaper grocery store brands. There is a difference and you get what you pay for. I have had severe dry eye issues for nearly a decade so fish oil is a must for me. This is my first time taking cod liver oil supplements and WOW. I wake up with my eyes as comfortable as when I take the pricier stuff. Cod liver oil, an age-old remedy—I wish I learned of this a long time ago!