Why does taking Tyrosine in the morning make my fatigue go away??

Question

I know that Thyroid medication includes Tyrosine in it, and when I take Tyrosine, my fatigue is gone...but I have had my TSH, T3 and T4 checked and they all seem normal. Here are the results:
TSH= 1.65
Free T3= 3.23
Free T4= 1.45

Now, does Tyrosine also help with Adrenal gland deficency? I know a couple of years ago, a doctor measured my Cortisol and it was low(it was 4.9 and normal range should be 5-21 in the morning) but when he prescribed cortisol, it made me feel worst, so I stopped going to him and stopped the medication....... does Tyrosine help with Adrenal glands too??? or just THyroids??
I just can't figure out why Tyrosine is making my fatigue go away...off course, in the afternoons it gives me a bad headache

Answer 1

Hi jumpinjack. Tyrosine is the amino acid precursor for the synthesis of dopamine, epinephrine (adrenalin) and nor-epinephrine (noradrenalin). So you may be getting increased levels of these 'monoamines', which may account for your improved energy levels.

A variety of micronutrients are also involved directly or indirectly in the above biochemical pathway. These nutrients include: vitamin C, Folate (and other B-vitamins indirectly involved in a process called methylation), Vitamin B6, Copper and Iron. So, it may also help you to take a high quality multi-vitamin/mineral supplement (not the junk ones like Centrum and One-A-Day).

Best wishes.

Answer 2

tyrosine is a non essential amino acid. Your body should make it. If your low then the addition of tyrosine is completing the amino acids that your body needs. Your body used the 22 amino acids to make all the cells, organs, glands, bones, hormones, and fluids. So if your short on tyrosine, the addes tyrosine is helping your complete the amino acid that apparently is needed. I would suggest finding out why you need more tyrosine. Check your digestive tract. Are you absorbing the protein sources well enough to make the amino acids?