From the manufacturer ... A pure and potent human grade fish oil with a balanced EPA + DHA ratio, FelineOmega3 is a great daily addition to your cat's diet to promote optimal health and well-being.

Suitable for cats of all ages and breeds, Feline Omega-3 is available in a tasty ocean fish flavour. 
 
Ingredients: Fish oil (anchovies, sardines, mackerel, herring); vitamin E; rosemary extract; sunflower oil; sunflower lecithin; ascorbyl palmitate.
 
We want our customers to know that every single lot of omega-3 we use has been third party tested. To check for yourself, simply enter the lot number found on the bottle here: purecheck.net