You may have heard that using L-tyrosine can potentially help improve your energy levels, help with weight loss, improve your thyroid or even reduce your stress response.
But are any of these claims true?
In order to have a discussion about these topics we really need to first talk about the basics of tyrosine.
In this post, you will learn why tyrosine is so important for hormone function in your body, why some people may benefit from supplementation and how to best supplement with this protein…
What is L-Tyrosine? (And Does Supplementing Work?)
Tyrosine is a protein in your body that acts as a precursor for MANY, and very important, hormones.
Your body takes tyrosine (the amino acid) and alters its chemical structure to turn it into these various hormones.
These hormones then circulate through your body and make the changes necessary for you to live a happy life.
What type of hormones am I talking about?
From tyrosine your body creates the following hormones:
- Thyroxine and triiodothyronine (thyroid hormones)
- Epinephrine and norepinephrine (adrenal hormones)
- Melanin (for skin pigmentation)
So, what is L-tyrosine?
L-tyrosine is a synthetic version of the amino acid tyrosine that can be taken orally as a nutritional supplement.
The idea behind supplementing with L-tyrosine is to potentially improve the function of tyrosine in your body to help create more of the active hormones we just discussed (thyroid and adrenal hormones).
This is nice in theory, but does it actually work?
That answer is somewhat more complex than just a yes or no, but the general answer is maybe.
When you are supplementing, with any nutrient, the goal is to help provide your body with nutrients that you may not be getting through diet or due to disordered metabolism.
And this is true for tyrosine as well.
You may benefit from supplementing with L-tyrosine if you are…
#1. Not getting enough of this protein from your diet.
This one is pretty straightforward.
Tyrosine is considered a non-essential amino acid (1) because your body produces it from phenylalanine (another amino acid).
If you don’t consume enough high-quality protein then it’s possible that your body won’t be able to produce enough naturally through this substrate.
If you fall into this category then supplementing with tyrosine may provide your body with the nutrient that you need and you may experience an improvement in your symptoms.
It’s not hard to think of ways that you may be deficient in certain nutrients and vitamins when you consider that most people consume highly processed and refined foods as part of their daily diet.
But this isn’t the only way you can potentially benefit from tyrosine supplementation…
#2. Your body does better with higher-than-normal doses of tyrosine.
Some individuals, despite having normal levels of nutrients, do better with higher-than-normal doses of vitamins and nutrients.
This is referred to as supraphysiologic dosing and is a concept that is well known with vitamins such as B12, B6, and folic acid (2).
Some conditions, including how quickly your body breaks down and metabolizes vitamins, may impact how much you need to take on a daily basis.
This shouldn’t come as a surprise when you realize that each of us is different and unique.
For some people, this value may be higher than normal which means they need a higher than “standard” dose.
The bottom line?
Using tyrosine may be helpful even if you have “normal” levels in your diet.
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L-Tyrosine & Thyroid Hormone
One of the biggest questions people have when it comes to L-tyrosine supplementation is whether or not it will help with their thyroid.
Currently, up to 10% of the population may have a thyroid-related problem (3).
And that’s a TON of people (up to 35 million in the U.S.).
Wouldn’t it be nice if taking tyrosine could improve your thyroid?
Well, it may potentially, but you need to realize that not many studies have shown that it is effective.
Having said that, many patients and doctors, have seen improvement in thyroid function as patients take these supplements.
So let’s talk about why this may be…
We already said that tyrosine forms the backbone of many hormones and this is also true of thyroid hormone.
Your body takes tyrosine and, with the help of iodine, turns it into thyroxine.
If you aren’t familiar with thyroxine then you can read more about it here, but just realize that thyroxine is another name for T4 which is the most abundant thyroid hormone in your body.
Your body can then take T4 and convert it into triiodothyronine or T3 (the active thyroid hormone).
This entire process starts with both tyrosine and iodine and both of these nutrients are critical for the creation of thyroid hormone.
Deficiencies in one, or both, can result in disordered thyroid hormone production and metabolism.
Tyrosine is a non-essential amino acid that your body can produce from other amino acids, but iodine MUST be consumed through your diet (4).
Because the consumption of sea vegetables such as kelp and seaweed is decreasing, as well as the preference for non-iodized salt, iodine deficiency is becoming more and more common.
This is important because it may not be wise to supplement with tyrosine unless it is also accompanied by iodine (or unless you know that your iodine level is “optimal” first).
It has also been shown that people who have thyroid disease, including hyperthyroidism and hypothyroidism, have irregular serum levels of tyrosine (5).
Those who have hyperthyroidism tend to have higher levels of tyrosine in their blood, and this level can increase dramatically after supplementation.
While those with hypothyroidism (low thyroid hormone), tend to have lower-than-normal levels of tyrosine in their blood.
When you combine this with the fact that using thyroxine medication (such as Levothyroxine) has been shown to enhance tyrosine metabolism in the liver (6), it may be a good idea to supplement with BOTH thyroid medication AND tyrosine (either from the diet or through supplements).
This doesn’t mean that using L-tyrosine will necessarily improve your thyroid function, but it’s certainly worth considering if you have thyroid problems.
L-Tyrosine & Your Adrenal Gland
While L-tyrosine hasn’t been well studied in the thyroid arena, it has been studied in the stress arena.
There are several studies that show that using L-tyrosine may actually help reduce the negative consequences of stress on the body.
We can attempt to figure out why this happens through some basic physiology…
We know that tyrosine forms the backbone for the adrenal hormones epinephrine and norepinephrine.
These hormones are secreted when your body is under perceived stress and mediated, in part, through the hormone cortisol.
The more stress that you are under the more your body will produce these hormones.
This may lead to a situation in which your body becomes “depleted” of the precursors required to create these hormones (7).
When this happens you may start to experience the symptoms of adrenal fatigue such as extreme fatigue, the sensation of feeling wired but tired, weight gain, and sleep problems.
The idea behind using L-tyrosine, in this situation, is that you are providing your body with the necessary building blocks to produce more of these hormones which may “increase” your stress resilience.
And the benefits of L-tyrosine supplementation in these situations extend beyond just your adrenal health.
Studies have shown that using L-tyrosine may improve your cognition (8) (reduce brain fog) and help reduce the symptoms of depression as well.
We also know that both your thyroid gland and adrenal gland interact with one another.
As one system starts to fade or become dysregulated, it can bring the other system down as well.
This may be another reason why, if you have thyroid problems, supplementing with L-tyrosine may help.
Should you Take L-Tyrosine?
With all of these benefits, it may be tempting to run out and purchase L-tyrosine from the grocery store.
Don’t do that… at least not yet.
Why?
Because, whenever you consider using a supplement, you need to make sure that the benefits outweigh any potential risks.
When it comes to L-tyrosine supplementation the risk of using this supplement is very low.
Doses as high as 20 grams per day have been given to people in the military without negative consequences.
And most supplements have doses in the milligram range (not the gram range).
So with very few risks, it may be worth a trial, especially if you have thyroid disease or adrenal-related problems.
There are other groups of people who may potentially benefit from using L-tyrosine as well:
- Those suffering from highly stressful situations for a prolonged period of time (9)
- Those with the symptoms of “adrenal fatigue”
- Those with known or suspected thyroid problems
- Those with “burnout syndrome”
- Those with other known hormone imbalances
- Those with depression or poor cognition (10)
- Those with brain fog or difficulty concentrating (11)
How Much L-Tyrosine Should you Take?
Once you determine if you want to use L-tyrosine the next question you should have has to do with your dose.
How much should you take?
We know that extremely high doses probably won’t cause any negative side effects, but does that mean you have to take that much?
Not really.
You’ll want to provide your body with the minimum amount necessary to provide a positive outcome while reducing the chance that you’ll experience negative symptoms.
This range is usually somewhere between 150 to 500mg per day of L-tyrosine.
But beyond the amount that you take, you should also consider taking L-tyrosine with other supplements.
Why?
Because if you have a deficiency in this amino acid then you probably have deficiencies in other nutrients and you may also benefit from other targeted supplementation.
You will get the biggest bang for your buck (both in terms of cost and benefits) if you take L-tyrosine along with other supplements designed to improve both your thyroid and your adrenals.
I’ve included a brief list of additional supplements that can and should be considered when you are using L-tyrosine.
Supplements to take with L-tyrosine for Adrenal health include:
- Adrenal Adaptogens – Adaptogens can further help regulate cortisol levels and manage stress. These pair perfectly with tyrosine and are particularly helpful in both thyroid disease and adrenal disease.
- Adrenal Glandulars – Glandulars can also be used to treat adrenal fatigue and tend to work well in certain individuals.
- Activated B Vitamins – B vitamins, as long as they are pre-methylated, can be safely used with MTHFR genetic problems and have been shown to help improve your stress response.
- Vitamin C – Vitamin C is another important cofactor in the production of adrenal hormones and it is highly concentrated in your adrenal glands (12).
Supplements to take with L-tyrosine for thyroid health:
- Guggul Extract – Guggul may help improve T4 to T3 conversion and improve free thyroid hormone levels in patients with hypothyroidism. There are few studies on humans but animal studies have been promising.
- Zinc – Zinc supplementation can help improve T4 to T3 conversion in hypothyroid patients who are also deficient.
- Selenium – Selenium has shown benefits in helping reduce thyroid antibodies and is also involved in T4 to T3 conversion.
- Vitamin A – Vitamin A is a fat-soluble vitamin that is required in optimal amounts for thyroid hormone cellular sensitivity.
- Adrenal Adaptogens – See above (they can help both thyroid and adrenal health).
Will L-Tyrosine Help with Weight Loss?
Theoretically, it may be possible for L-tyrosine to help with weight loss, but I would not recommend using it for that purpose.
The idea behind weight loss may be coupled with the idea that taking tyrosine can potentially improve thyroid function.
Thyroid hormone helps regulate your metabolism, so if you can improve thyroid hormone then you may be able to “boost” your metabolism.
In addition, it is known that high cortisol and stress may also lead directly to weight gain.
Taking tyrosine may theoretically help reduce the stress response, normalize cortisol, and therefore lead to weight loss.
These ideas work in theory but in practice, they don’t quite work out as you would think.
While it is true that some people do experience weight loss when using tyrosine, the amount of weight that they lose is usually minimal.
If you lose any weight, you may only lose a few pounds as you regulate some of the hormones discussed here.
You are much better off focusing on other supplements and conditions in your body if weight loss is your primary goal.
Tyrosine supplementation will work better as part of an overall weight loss plan, but not as a primary weight loss supplement.
Conclusion
L-tyrosine is an important protein in your body because it is the precursor to both thyroid hormone and adrenal hormones.
A deficiency in tyrosine may result in abnormal production of these hormones and therefore symptoms.
It may be possible to take L-tyrosine as a nutritional supplement to help your body increase these levels and provide you with some relief.
Supplementation appears to be quite safe, but make sure to supplement with other vitamins and nutrients for the best results!
Now I want to hear from you:
Have you tried taking L-tyrosine before?
Did it help you with your thyroid function or adrenal function?
Did you notice an improvement in other areas?
Why or why not?
Leave your comments below!
I took Terry, Naturally L-Tyrosine and an Iodine supplement. Immediately after one eye became larger and more pronounced than the other. I stopped the supplement. Sea Kelp does the same thing. I was told by a Naturopath the only supplement to take is powder form Kyo Green. I haven’t tried it. I have many of the symptoms for T3 supplementing and want to join your program there was a 97.00 offer but I cannot find it.
Hi Kim,
Sorry about that! You can find it here: https://www.restartmed.com/hormone-mastery/
Hope this helps 🙂
I am currently taking NP thyroid and I had my thyroid removed in November of 2015 due to cancer. Is this something I should consider taking? I dont know if its related by I have had white areas of skin over my joints all my life. I wonder if that lack of melanin in my skin is related to a lack of L-tyrosine. Just an interesting thought. Thank you.
Hi Robin,
It can potentially help the conversion process and your thyroid. In regards to your white spots, you should look to see if you have the autoimmune condition vitiligo.
I have Hashimoto’s and am on Synthroid and Liothyronine. I had everything tested and my TSH was 3and my L-Tyrosine level was very low so I began supplementing, figuring it might help with some fatigue in the evenings. After taking the L-Tyrosine, I started feeling tired in the afternoons. I later switched brands and still felt tired. I had my TSH retested after a couple of months and it was up to 8. Since L-Tyrosine was the only new supplement I was taking, I stopped taking it and the afternoon fatigue stopped and I just had my TSH retested and it was 1 with T3 and T4 levels normal.
Is it possible the L-Tyrosine was causing my fatigue and TSH level to go up? Should I try supplementing again?
Hi Jeff,
It’s certainly possible but I wouldn’t say it’s very likely. I would also take a look at the supplement you purchased to determine if it was of sufficient quality. Sometimes, using low-quality supplements with fillers/binders/dyes/etc. can impact how you react to them. Having said that though, I probably wouldn’t use L-tyrosine if you don’t have any symptoms.
Hi Dr. Childs,
Does this apply if you’ve had your thyroid removed?
Ty
Hi Karen,
It’s more relevant to your adrenal health but it may still potentially help.
I thought you (and your readers) might be interested to learn that Genova Diagnostics offers a test that provides an amino acid profile. I was surprised to see my 16 year old daughter’s results indicating a LOW tyrosine level. I wondered ‘Why would a non-essential amino acid be low’?! Her mainstream thyroid labs are unremarkable -except low T3. Nothing alarming (yet). So we started a supplement regimen of iodine and L-tyrosine. I’m optimistic we are on the right track!! I hope I’ll be able to share her improved lab values and her success SOON!!
Hi Sharlene,
The main problem with these tests is that the results do not necessarily correlate with clinical symptoms and we aren’t sure what a particular result means. For instance, if your tyrosine is “low” in the serum that doesn’t necessarily mean it is low in your cells. Furthermore, just because tyrosine is low does not mean that it can be solved with supplementation. For these reasons and many more, I don’t recommend the use of those tests. They may make the patient feel better about treatment options, but their clinical significance is not well established.
Dr. Westin, An Integrative physician wrote this and it appears to say there are more risks than benefits to taking tyrosine with hypothyroidism. Your response? Thank you.
“Just like iodine, tyrosine is an integral part of thyroid hormone production but supplementing with it has the potential to suppress thyroid activity. In fact, there’s not a single study out there that shows the ability of tyrosine to increase thyroid hormones, even when they’re low.
The problem is that tyrosine will increase adrenal hormones, epinephrine and norepinephrine which will create a “wired feeling,” a high, brain foggy, I’m flying feeling, and this is one of the worst problems that you can do for a patient with hypothyroidism or an autoimmune thyroid. It is creating an active stress response by over-stimulating the adrenal glands.” Dr. John Parker, D.C.
Hi Robin,
There is a lack of studies ‘proving’ efficacy in a number of therapies in the integrative world, but that doesn’t mean that they don’t work, it just means they haven’t been studied sufficiently (although it’s very possible that many of these therapies will be proven ineffective overtime). All therapies must first be thought of before they are tested and proven, so it’s not surprising that most people with newer ideas don’t have validation to their thoughts until a later date.
I happen to mostly disagree with that assertion but there’s still room for us to both be right in the grand scheme of things. The truth is that tyrosine will work for many people and it won’t work for some. That’s just the nature of almost every therapy that exists right now. The hard part is finding what works for your body and then using that.
Hi, I had my thyroid removed due to cancer ( follicular variant of papillary) four years ago. I am 43 now. I am struggling, long before thyroid cancer, with issues that I’m realizing are maybe due to undiagnosed ADD and needing brain support. I found a product that has DL-phenylalanine in it but wants to make sure it is safe to use with no thyroid and history of thyroid cancer. Currently, have tsh of .4 I don’t want to “feed “ potentially dormant cancer cells but I think I’m understanding this would suppress them or can I even make this on my own anymore? My endo is at Mayo and has been great in terms of cancer but doesn’t believe in anything holistic who’s health has been very frustrating for me. Any suggestions or answers would be great! Thank you!
Is it recommended to take L-Tyrosine for people with Hyperthyroidism?
Hi Lynn,
It’s probably not a good idea unless you know that your levels are low.
Had radioactive iodine treatment for hyperthyroid in my 20s, I’m now hypothyroid and taking levothyroxine, now in my 60s. Researched online that the continuation of this med can have a negative effect on kidneys, heart, and the vascular system.
So, I’ve been taking L-tyrosine along with my vitamins and sea kelp. I must say it has helped me tremendously. It really has! Looking into acquiring info and products that would help with regulating cortisol and adrenal support would be very beneficial here. Thanks a lot for people like you who care for people like us. Connie.
I had a bout of hyperthyroidism in fifth grade that was adjusted after a year on medication. My thyroid stopped after the birth of my second child (1989). I’ve been on Levothyroxine since: I’m now 62 and have gone thru menopause. My overall health is good, but I’ve gained weight and my skin has become extremely dry, my hair falls out everywhere, but I’m not bald. Would L-Tyrosine do anything for me as a post-menopausal thyroid patient?
Hi Julie,
Whether or not L-tyrosine will work for you doesn’t have anything to do with you being post-menopausal as it depends more on your serum levels and a number of other factors. I typically recommend a trial of this nutrient if you suspect that it will work for you.
Hi ,I have been on thyroxine for 14 yrs ,never felt well , I have managed thru diet to bring my dosage right down , but I have high b12 ( over 1200 level ) I was wondering about having the MHTFR test to see if I’m absorbing b12 , but the doctors don’t even know about it, if b12 is very high is it still ok to take b12 methyl type , where can I get the test done ?
Also, I was told that iodine 245mcg is ok but how much tyrosine to take as I’m feeling very tired but I was told levels were ok so I thought I’d try tyrosine to see if it helps.
Also which make do you recommend I take a multivitamin with iodine in but no tyrosine.
Thanks for your help
Hi Carrie,
I can only make recommendations for my own supplements because they are the ones that I use on a daily basis. You can learn more about them to see if they are a fit for you here: https://www.restartmed.com/product/thyroid-adrenal-reset-complex/
Hi, thanks for the article. I still do not fully speak thyroid language 😉 but I do appreciate the comprehensive explanation as well as the easy-to-read style.
I tried tyrosine a few months ago to treat my chronic depression and social phobia following the guidelines offered in The Mood Cure book by Julia Ross.
I bought 500mg capsules and started taking one in the morning and went up to take another one around mid-afternoon. It started to finally give me the motivation to exercise and that fed a positive cycle which was definitely helping.
However, soon after I took only the morning dose as it was giving me subtle restlessness and eventually sleeping problems. Then I lowered it to one pill every other day, but still felt unease. I am now considering further lowering the dose, as I really miss the motivation it gave me to move and get physical exercise.
All my thyroid labs (ordered and assessed by conventional doctors) came out normal but I suspect it’s not impossible I might have a subclinical case of hypothyroidism.
I’m 44 always been very healthy. I healthy and take a multivitamin daily. Two years ago it was suggested to me to add L-tyrosine to my daily fitness regimen to increase metabolism and increase energy and focus. I was taking 1000mg a day and I felt amazing! About 6 weeks later my hair started to break off and fall out drastically. I lost about half of it in just a few weeks. I also developed a terrible cough and respiratory problem. I saw several doctors and had lab work done and everything came back normal. I realize that the tyrosine was only thing I have been doing differently so I discontinued it. My respiratory issues and cough went away a week later. My hair never grew back and has continued to fall out over the last two years and I have gained 12 pounds. I feel like maybe the Tyrosine overstimulated my adrenal gland or thyroid and I threw all my hormones out of wack. Is this possible and how do I fix this problem?
Hi Cameron,
It’s always possible that you could have reacted negatively to it but I would say that is certainly an unusual reaction. I would look into your thyroid lab tests to see if anything comes up there first.
I have hyperthyroidism and I take 10 mil of methamazole each day. I have recently withdrew from a long time bout with pain medication which has left me agonizingly tired and depressed, brain fog etc. I have heard the l tysorone can help speed up my recovery. Is this safe for me?
Hi Liz,
It can help but it may also cause your thyroid to kick in so you need to be careful with hyperthyroidism.
I’d never heard of L-Tyrosine but it’s in my iodine supplement. My iodine was flagged low. Now I understand why they combine these two together. I’m also taking other supps with it.
Dear Dr Westin,
I have found your articles informative. Appreciate if you could clarify the following query.
I am diagnosed with Hypothyroid for the last 12 years. I am suffering from brain fog and daytime drowsiness due to disturbed sleep.
Is L-Tyrosine advisable instead of Thyroxine Sodium tablets for Hypothyroid and brainfog? If so, what is the dosage of L-Tyrosine for Thyroxine Sodium 75 mcg?
Thanks
Hi Murthy,
They serve different purposes so you wouldn’t use one over the other. In terms of dosing, I typically recommend 50-150mg per day: https://www.restartmed.com/product/thyroid-daily-essentials-thyroid-multivitamin/
Hello Dr. Childs,
I have Hashimoto’s for the last 30+ years.
I have been taking either Levothyroxine or Synthroid medications over the years and up until recently have never been tested for t3 or r T3.
Under the guidance of my ND I have been on tyrosine 3000mg for the last 2 years. I will begin taking this supplement with the Adrenal Support and T3 converter that I just purchased from you.
Currently I was taking the Tyrosine 3000mg (4 tabs) at the same time as my Synthroid med (125mcg) in the evening. (away from food and coffee).
Recent labs indicate quite low t3 and still dealing with brain fog, irritable, and afternoon lower energy.
Your thoughts please?
Joyce
Hi Dr. Childs,
Thank you for all the information that you provide. Do you think that someone with hyperthyroidism could try to avoid or limit foods rich in tyrosine, such as meats? (assuming dairy already avoided).
Thank you very much.
Hi Aura,
I don’t think that you necessarily need to worry about excess tyrosine intake. There are people with hyperthyroidism who have done very well on the carnivore diet which is naturally very high in tyrosine. Your mileage may vary, however, so keep an eye on how you feel as you adjust your diet.
Dr Child’s, thanks for your info.
I had an overactive (G Dis)
Thyroid as a teenager, and after a few years and lots of medication I went from being very skinny to slightly over weight, eating the same (fairly healthy and exercising).
Blootests showed my thyroid as “normal” yet I struggled with weight, and even when I was at my skinniest I didn’t feel comfortable in a bikini as an adult.
When I was pregnant my thyroid went to underactive (which Think it was on the boarderline of), so I went on 50 levothyroxin (Hashimoto’s probably from hormones).
The doctor said just to take a 25 (half the 50 tablet) per day after Bub was born.
Then she slightly upped it to the same 5 days and a full one on weekends. I just take a full one each day and my levels are a bit better.
I can’t tone up or get my KGs any lower.
Bub is a year old and after an emergency c section and finding it hard to exercise more than waking, people ask if I’m pregnant again, most of the weight is around the midsection and arms, a bit all over with my eyes/chin puffier and dark circles. I’m taking iron and probiotics tablets.
I was at a healthy weight 57kg before pregnancy.
Up to 73kg (third trimester).
When I was breastfeeding I got down to 63kg.
Now almost a year later I’m up to 69kg (from 71kg) the heaviest I’ve ever been in my life (other than during pregnancy).
I’ve just started to take a thyroid support supplement with similar ingredients to your brand (zinc, selenium, iodine etc).
They only test for TSH and free T3/T4. The doctors won’t test for reverse, lepton, adrenals, etc.
They say I have a little kidney cyst. An umbilical hernia and a “fatty liver”. I don’t eat a lot of fried food and never drink alcohol.
I’m thinking of taking a otc T3 supplement.
I don’t want to change things too much as I have had yo-yo diets.
I would like to take the diabetic stuff if it helps with weight loss, yet my BMI is (thankdully) “too low” as it’s 26.
I would also like a little brother or sister for my little boy one day so I didn’t want to mess things up.
My skin is a bit better (used to get hormonal acne), yet it’s a bit dryer.
After colouring and trimming my hair I can’t get it longer than bra length, and my hair used to be longer before pregnancy.
I’ve started to take ox bile supplements.
I also use a hair treatment.
My muscles hurt and I get headaches/dizziness. My eyes and sinus hurts and I have ETD (even got grommets in ears as they feel full and pop/crack).
I get asthma and heyfever and itchy palms (had pregnancy cholistasis).
My hands and feet get a bit numb and my stomach almost feels like “kicks” again (not currently pregnant) so I think it’s the nerves.
Your advice would be great.
Thank you.
I take tyrosine. I eat approx 6 oz of meat/fish daily. The tyrosine makes a very positive difference in my energy and mood levels. There is a lot of info on the internet that states tyrosine is a precursor to thyroxine production AND then the cycle goes on to produce dopamine. This article does not mention that. I take thyroid meds, Amour and liothyronine. The addition of liothyronine and tyrosine were a life saver. I thought, and am still concerned, that I was headed into Alzheimer’s with the way I felt. Now my TSH lab returned being < than low end range has made me wonder if reducing liothyronine and increasing tyrosine might be better. Based on your article I get the impression you don't believe that Tyrosine impacts thyroid levels but what about impact on TSH test results?
Hi, Not sure I’f you will see this, but I am also taking the same thyroid meds as you are and I just recently added a collagen powder that has tyrosine in it. I’m trying to find out if it’s ok to take it because I’m afraid the tyrosine will mess with my thyroid and make me hyperthyroid. Are you still taking the tyrosine? If so how are you feeling on it? Thanks
Hi Tammy,
Tyrosine can be very beneficial for those with thyroid dysfunction, depending on what dose is being used and how much you are taking.
After studying this article am I correct in concluding you believe the tyrosine is more likely to convert to dopamine then norepinephrine and then epinephrine which would help adrenal issues? Would this be the same as high cortisol or would it be low cortisol? It might convert to thyroxine, but you feel it more likely would take the path to create neurotransmitters? Since fatigue is the issue I constantly fight (lifetime), then I believe I should focus on adrenal health. But I still am confused because when I tried taking SSRI that supposedly processed norepinephrine I was overwhelmingly sleepy and gut was a mess. Based on article above my TSH should not be less than 1! Is there anything else that impacts a TSH test?