Phenylalanine is an essential amino acid, in which “essential” means you must get it through your diet or supplementation since your body cannot produce it on its own. Phenylalanine also is known as nature’s pain reliever. 

Interestingly, Phenylalanine is used in psychotropic drugs such as morphine, codeine, papaverine, and even mescaline because it is such an effective pain reliever.

Phenylalanine: How is it used in the body as a pain reliever?

Phenylalanine is one of the three aromatic amino acids, which include the other two, Tyrosine and Tryptophan. Phenylalanine is also the precursor for Tyrosine, and like Tyrosine, Phenylalanine is the precursor in the human body of catecholamines, which include dopamine, epinephrine, norepinephrine, and tryamine.

Dr. Winston Greene at DC Nutrition explains what catecholamines are and why we need phenylalanine, and how much: “Phenylalanine is a precursor of the neurotransmitters called catecholamines, which are adrenalin-like substances. … is highly concentrated in the human brain and plasma. … and requires biopterin, iron, niacin, vitamin B6, copper and vitamin C. An average adult ingests 5 g of phenylalanine per day and may optimally need up to 8 g daily.”

Phenylalanine essential amino acid comes from food and levels affect pain relief

You can get Phenylalanine from protein foods such as beef, chicken, fish, eggs, dairy products, and wheat germ. Dr. Greene shows that not only is this amino acid good as a pain reliever, but also that it is low in people who ingest caffeine. Interestingly, depressed people often seek out stimulants like caffeine drinks as a “pick me up” but may be doing themselves further harm since Dr. Greene says they’d found that “about 10 percent of depressed patients have low plasma Phenylalanine, and phenylalanine is an effective treatment in these cases.”

When someone gets an infection, however, Phenylalanine levels increase in the body to help aid any pain that might be associated with it, again acting as nature’s pain reliever. This amino is used in “premenstrual syndrome and Parkinson’s may enhance the effects of acupuncture and electric transcutaneous nerve stimulation (TENS). Phenylalanine and tyrosine, like L-dopa, produce a catecholamine effect. Phenylalanine is better absorbed than tyrosine and may cause fewer headaches.”

The bottom line is that Phenylalanine can be a great natural source for pain relief for numerous problems from infection to PMS to diseases such as Parkinsons. The health benefits are numerous, but always be sure to check with your doctor prior to any supplementation or changes to your diet when working to include this amazing amino acid for pain relief.

Reference:

http://www.biology.arizona.edu/biochemistry/problem_sets/aa/aromatic.html

http://www.dcnutrition.com/AminoAcids/Detail.CFM?