Tyrosine is a conditionally essential amino acid that is a precursor to the catecholamine transmitters dopamine, epinephrine, and norepinephrine. These are vital messengers for the brain and the body’s other nerve networks. The thyroid gland also needs tyrosine to make the vital hormone thyroxine.* At Doctor’s Best, we lead with science. Our products are backed by research and crafted using pure ingredients carefully sourced from around the globe. Since 1990, we have dedicated ourselves to providing highly effective nutritional supplements that enable you to live a healthier lifestyle. We want nothing more than to see you and your family thrive!

• Doctor's Best L-Tyrosine 500mg Veggie Capsules, 120 Count:
• Precursor for the nerve messengers dopamine, norepinephrine, and epinephrine (adrenaline)*
• Precursor for thyroxine production by the thyroid gland.*
• Non-GMO | Gluten Free