L-Methiocid Complementary Feed For Dogs, Cats, N60L Methiocid Complementary Feed For Dogs, Cats, N60 L Methiocid is a complementary feed formulated to support urinary tract health in dogs and cats. It contains L methionine, an essential amino acid that plays a role in maintaining normal urinary conditions and supporting metabolic processes related to urinary balance. This supplement is commonly used to help support a healthy urinary environment, particularly in pets with dietary or metabolic needs