L-tyrosine, also known as tyrosine, is a nonessential amino acid that is important for building proteins. L-tyrosine is also important in the creation of several transmitters, including dopamine, norepinephrine and epinephrine. Generally, the body produces enough L-tyrosine from other amino acids, although some protein-rich foods also contain tyrosine. No interaction between L-tyrosine and Cymbalta has been noted. Consult your physician before taking any supplements, including tyrosine.
L-tyrosine
L-tyrosine is purported to treat a number of disorders, although no research substantiates these claims. L-tyrosine is used to treat depression, premenstrual syndrome, Parkinson's disease, schizophrenia, chronic fatigue syndrome and attention deficit hyperactivity disorder, or ADHD. Tyrosine is effective to treat phenylketonuria, or PKU, under a doctor's care. PKU is a condition in which individuals are unable to metabolize the amino acid phenylalanine, and it can lead to brain damage. Some athletes take L-tyrosine because they claim the amino acid helps their performance, but no research backs that idea.
Cymbalta
Duloxetine, sold under the brand name Cymbalta, is an anti-depressant medication. Cymbalta is used to treat depression and generalized anxiety disorder. This medication is also prescribed for certain chronic pain conditions, including fibromyalgia, diabetic neuropathy and osteoarthritis. It is considered a selective serotonin and norepinephrine reuptake inhibitor because of the specific neurotransmitters it targets. Cymbalta helps to keep the neurotransmitters serotonin and norepinephrine in the gap between nerve endings, allowing messages to pass through the nervous system and improve mood.
L-tyrosine and Cymbalta
According to Drugs.com, Cymbalta may interact with other medications and herbs. However, no interaction between L-tyrosine and Cymbalta has been reported. Since L-tyrosine use has not been studied at length in humans, no dosing guidelines have been established. If you choose to start taking L-tryosine, begin with a dose a little lower than recommended on the label of your supplement to allow your body time to adjust. Do not take more than the amount of tyrosine recommended on the label.
Precautions
Consult your physician or pharmacist before taking L-tyrosine. L-tyrosine should not be taken with monoamine oxidase inhibitors, thyroid hormones or levodopa because of potential interactions. L-tyrosine has very few side effects. According to the University of Maryland Medical Center, people who experience migraine headaches should not take L-tyrosine because the supplement can trigger headaches. L-tyrosine can also cause gastrointestinal upset and increase thyroid hormone levels. Cymbalta can potentially interact with a number of medications, including other anti-depressants, blood thinners, the herb St. John's wort, diuretics, L-tryptophan and some antibiotics.
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