DL-Phenylalanine is widely used in the food and beverage industry as a dietary supplement due to its role in protein synthesis and its ability to support mental health. It serves as a precursor to important neurotransmitters like dopamine, norepinephrine, and epinephrine, making it valuable in managing mood disorders such as depression and anxiety. In the pharmaceutical sector, it is incorporated into formulations aimed at alleviating chronic pain, particularly in conditions like arthritis and fibromyalgia, as it can enhance the body's natural pain-relieving mechanisms. Additionally, it is used in skincare products for its potential to improve skin elasticity and reduce signs of aging by promoting collagen production. Its versatility also extends to research applications, where it is utilized in studies related to amino acid metabolism and neurological functions.