L-Tyrosine Side Effects
For most healthy individuals, tyrosine does not cause any adverse side effects. For some, tyrosine was recorded to cause:
It is also important to note here that, in most cases, L-tyrosine is typically not beneficial for older adults. As we know, tyrosine can improve cognitive abilities and working memory performance in most individuals.
Unfortunately, it has been found that L-tyrosine has an inverse effect on older adults (typically over 60). Supplementing with this amino acid in this age group is not beneficial and can result in cognitive decline.
If you have a thyroid condition, it is not recommended to supplement with L-tyrosine (of course, consult with your doctor first).
Adding extra tyrosine to your diet could create hormone imbalances with those with thyroid conditions since tyrosine takes part in producing thyroid hormones.
For those who are susceptible to migraines, L-tyrosine might not be for you.
Epinephrine, when converted from tyrosine, creates a substance called tyramine. Tyramine is another amino acid that helps regulate blood pressure. In causing the blood vessels to constrict, then dilate, tyramine can trigger an unwarranted migraine.
To avoid over-production of tyramine, it is suggested to avoid supplementing with L-tyrosine.
Those who are taking the following medications should consult with their doctor before supplementing with L-tyrosine:
· Monoamine Oxidase Inhibitors (MAOIs): Tyrosine may cause a dramatic increase in blood pressure for those who are taking this antidepressant medication. This spike in blood pressure could cause a heart attack or stroke.
· Thyroid Medications: Thyroid medications exist to replace thyroid hormones that cannot be produced naturally in the body (or in sufficient quantity). As we learned, Tyrosine aids in producing thyroid hormones, which can be a contraindication for those on thyroid medications.
· Levodopa (L-dopa): Levodopa is commonly used to treat Parkinson’s disease. This medication, when taken with tyrosine, competes to be absorbed by the body. For this reason, taking Levodopa with this amino acid can potentially interfere with this medication’s effectiveness.
Pregnant Women & Children
There is not yet sufficient evidence to determine if L-tyrosine is safe for pregnant women or children. Talk to your healthcare provider first if you are pregnant, or if you are considering tyrosine for your child.