Omega-3 Fatty Acids
Fish oils and other fatty acid supplements, which have been found to support skin, coat, joint, kidneys, heart and immune system health, are among the top-selling pet supplement ingredients since they have some of the most animal-specific studies backing up their health, according to the Packaged Facts’ Pet Supplements in the U.S. report.
Salmon oil is the richest and best-absorbed source of omega-3 fatty acid, according to Coger. And although it’s always best to consult your veterinarian before introducing a new supplement, the Omega-3 fatty acids DHA (Docosahexaenoic acid) and EPA (Eicosapentaenoic acid) in salmon oil contribute anti-inflammatory benefits, says Cline. She recommends a dose of 40 mg/kg EPA and 25 mg/kg of DHA per day.
It’s also important to make sure the vitamin or supplement company is screening for contaminants such as “PCBs [polychlorinated biphenyls] and heavy metals and investigate where they are sourcing [these supplements] from,” says Cline.
According to the U.S. Environmental Protection Agency, PCBs have been shown to cause cancer and other adverse health effects in animals. The U.S. National Library of Medicine, an institute within the National Institutes of Health, also notes an association between heavy metal exposure and cancer in humans and animals.