Methionine is a key component used on finfish, crustaceans, and shrimps. It is a vital amino acid found in humans. It plays a vital role in the health and metabolism of many species, including humans. Supplementation of methionine benefits those suffering from copper poisoning. The food and nutrition board of the United States set the RDA (Recommended Dietary Allowances) for amino acids in 2002. For methionine, the maximum recommended allowance for adults is 19mg/kg body weight/day. Also, under the U.S. certified organic program, methionine is allowed as a supplement to organic poultry feed. High levels of methionine are found in egg, fish, and meat. Its use in pharmaceuticals includes treating allergies, alcoholism, drug withdrawal, depression, asthma, radiation side effects among more. However, according to numerous studies, overconsumption of methionine is linked with cancer growth, which presents an obstacle in the growth of the methionine market. Animal feed has emerged as the primary application end-use segment and expected to lead the segment for the years to come. Poultry is the leading consumer for methionine. The increasing emergence of fish proteins and tuna infused b...