Tri-Omega Fatty Acids For Large and Giant Breeds, 60 Capsules Vet Solutions Aller G-3 Supplement contains omega-3 fatty acids derived from fish oil. These fatty acids help decrease allergy related itchness in the skin by interfiering with production of the inflammatory substances that cause the itching. Aller G-3 Supplement is the best supplement to maintain the skin health of your pet.