ORALX PHENAGIN blends the amino acid DL-Phenylalanine with specific herbs. DL-Phenylalanine is considered an essential amino acid as it is a necessary component in equine nutrition. Because it cannot be synthesized by the body, it must be supplemented whenever it is lacking.

In humans, DL-Phenylalanine has been suggested to relieve the pain of osteoarthritis, rheumatoid arthritis, lower back pain and joint pain. This is because DL-Phenylalanine may have the ability to block certain enzymes in the cental nervous system that are normally responsible for breaking down natural morphine-like hormones.