Cold water Thrive Herring Oil is particularly rich in essential fatty acids (including EPA and DHA omega 3). Herring oil will help your pet obtain their optimal health, with added vitamin E (100 I.U. per 5 ml). May support: Digestion, Skin & Coat Health, Energy Levels and Stamina, Cardiovascular Health, Muscle Health, Brain Health, Immune System Health, and Mobility.