L Tyrosine capsule 500 mg

Tyrosine is not an essential amino acid since tyrosine can be made from the amino acid phenylalanine. Tyrosine can be converted into dopamine and norepinephrine. Supplementation with both tyrosine and phenylalanine leads to alertness and arousal.
   Phenylalanine and tyrosine are sometimes prescribed as antidepressants, usually in combination with other nutrients and herbs that have mood elevating properties. Some doctors also recommend these amino acids for appetite control. Phenylalanine may trigger the release of an appetite-suppressing hormone in the gut called cholecystokinin. Most individuals who take either of these amino acids notice improved alertness, mental arousal, and mood, and slight loss in appetite.
      A combination of ginger, cinnamon, green tea extract, spirulina, acetyl-l-carnitine, choline, guggul, and several other herbs and nutrients, as found in Diet Rx, a very effective herbal diet pill for weight loss. Users of Diet Rx have lost several pounds within a week or two. Diet Rx does not have tyrosine.

Tyrosine 500 mg, Club Natural
Supplement Facts
L Tyrosine - 500 mg per capsule

If you plan to take tyrosine, limit your dose initially to a third or half a capsule until you find out how tyrosine reacts in your system.

Click here to buy L tyrosine and Mind Power Rx brain enhancer
 

Conversion of Tyrosine
Phenylalanine to Tyrosine to L Dopa to Norepinephrine to Epinephrine

L Tyrosine supplement Questions
Q. I wanted to write to you about Tyrosine. I started taking 500 mgs. of Tyrosine once a day, after about 2 months, I noticed that a lymph node began to appear in my throat area, I discontinued using the Tyrosine, and the lymph node went away. When my fibromyalgia symptoms reappeared after about 1 year. I decided to try it again. I began the 500 mg dose again for another 2 months, and then one morning I awoke to a swollen neck on the right side. After months of tests to rule out everything from thyroid disease to Lymphoma, they could not find anything. But I remembered that the Tyrosine had caused the lymph node from before. Ever since then I discontinued it. Why would it seem like the Tyrosine caused these symptoms? Would a smaller dose be more beneficial because when I did use the Tyrosine, I did not suffer from any other symptoms, and it did help me feel better.
   A. Hi this is interesting, this is the first we have heard of this connection between tyrosine and lymph node enlargement.

Q. I have been taking 500mg a day of L-Tyrosine since June 2006 in combination with 500 mg of Para Thyrolate, and vitamin B (as prescribed by a nutritionist.) Also, I have high blood pressure and have been taking hydrocholorathiazide for the past two years. On Friday December 22 I had a Grand Mal Seizure followed by a second one 5 hours later. I have never had a seizure before in my life and I am 36 years old. The day of the seizure I had been feeling like I was coming down with a cold or flu and barely ate anything all day. I have been reading up on the side effects of L-Tyrosine and realized that I have been experiencing side-effects for quite some time; heart palpitations
and what appeared to be mini panic attacks. Has L- Tyrosine ever been documented to cause seizures? At the hospital they ran lots of tests and could not seem to find anything wrong with me so the seizure remains unexplained.
   A. Although we have not come across any published studies regarding the role of l tyrosine on seizure inducement, we can not rule out the possibility, that, in some people, it is possible that high doses of l tyrosine could reduce the threshold for a seizure to occur. This is just speculation since we have not seen actual research blaming l tyrosine supplement use and seizure occurrence.

Q. Can one over-dose on 500 mg. L-Tyrosine on a daily basis for one month or two? What side effects might be expected L-Tyrosine? Thank you. I've learned so much from your website already.
   A. Yes, tyrosine can cause heart rhythm problems.

Q. Is it safe to keep taking l tyrosine while on prescribed Remeron medication?
   A. Remeron is the product name for mirtazapine, an antidepressant that became available in 1997. Remeron is used for moderate or severe depression, for treating anxiety, motor retardation, and cognitive and sleep disturbances associated with depression. Remeron has a tetracyclic chemical structure that makes it different from other common antidepressants (SSRIs, MAOIs, and tricyclics). While stimulating norepinephrine and serotonin release, Remeron also blocks two specific serotonin receptors. When combining supplements and medications, potential side effects are mostly dependent on the dosage used and the person taking the supplement. Many factors are involved and what works for one person may not work for another. A low tyrosine dosage may cause no side effects, but a higher one could.

Q. Can L Tyrosine can be used in place of or in addition to Carbidopa for Parkinson's disease?
   A. L Tyrosine is not an effective supplement for those with Parkinson's disease. We have no experience using tyrosine as an add on to Carbidopa, so we don't know.

Q. Tyrosine even at 1200 mg doesn't do much for me (minor concentration boost) and I find that it puts more of a lid on my functioning if I take it for more then a day or two at a time, not to mention it only seems to help for about 2 hours. N-Acetyl Tyrosine has been said to be more potent (what dosage of regular Tyrosine compared to the Acetyl version) and marketing for it says that it is more stable, does that mean that it will stay in the blood stream longer?
   A. We have not seen scientific comparisons between acetyl tyrosine and regular tyrosine, but the dosage of acetyl tyrosine may be a third or quarter of the tyrosine dosage in many people. We don't find tyrosine to be as good a mind booster as some of the other supplements.

Q. I have often thought that I have hypothyroidism because it runs in my family. I have a lot of the symptoms too. So, I took L Tyrosine for a couple of days and I started getting hot flashes. So I stopped but the hot flashes continued and now it has been over 2 weeks. I was supposed to start menstruating around the same time but it hasn't happened yet. I'm wondering if I kick started my body into menopause by speeding up my thyroid. Have you heard of anything like that before? And, if so, should I start up the L Tyrosine again in smaller doses for the hypothyroid symptoms?
   A. Tyrosine can elevate body temperature but this should go away within a day or two or a few days after stopping it. We can't make recommendations whether to restart or not take the l tyrosine supplement since that is a decision you and your doctor would need to make.

Q. I'm a little confused about which neurotransmitter is most directly affected by L-tyrosine, norepinephrine or dopamine? I guess I'm wondering if mimics something like Effexor or Paxil more closely? And, have you heard any reports of L-Tyrosine causing fatigue or sedation?
   A. Taking a L tyrosine supplement causes alertness. L tyrosine converts to dopamine but it can convert to several other substances. Taking a L tyrosine supplement is not a reliable or efficient way to provide dopamine. 5-HTP mimics Paxil more closely.

Q. I continue to learn from Mind Boosters book. It is the one source that I continually return to when exploring nutritional approaches. My question concerns Tyrosine. I have recently begun taking Acetyl L-Tyrosine, one 300 mg. tablet in the morning. It seems to increase energy, and even give a little boost in the area of verbal fluency (an area that I am very interested in improving). I seem to "feel like talking" more than I normally would, and the words seem to come a little more easily. However...I'm having a lot of trouble sleeping, even with this small (I think) dosage, I seem to have a "wired" feeling. I would hate to give up the benefits of tyrosine.
   A. 300 mg of acetyl-tyrosine is actually, in our opinion, a high dose. Acetyl-tyrosine is probably much more active that tyrosine by itself. The alertness it produces does cause insomnia. A lower dosage may reduce the side effects.

Q. I have read alot on the site about the cautions of 5-HTP and would like to ask about whether there are any risks of using L-Tyrosine in the long-term. For me, this supplement really helps with my mood but I would like to know whether the amino acid is safe for daily consumption at a high dose(12 grams). I do not experiences any side-effects from this amino acid and have not read any reports of toxicity ever occurring from its use.
   A. Twelve grams of tyrosine is a very high dose. Side effects could include irritability, anxiety,  heart irregularities and perhaps  over the long run could have a pro oxidant effect on certain brain cells, but this is just my hypothesis. Tyrosine seems to be more effective in those whose depression is due to low dopamine levels. It's probably best to not use one particular nutrient to treat depression for prolonged periods but to alternate different ones such as St. John's wort, SAMe, 5-HTP, etc.

Q. I have mild depression and depersonalisation and had to start St Johns wort which caused me a lot of arrythmias and feelings of mania, restlessness-at least now the symptoms are gone. I had to cut them down and my depression got much worse but now I am thinking to get some l-tyrosine-would you say 250 mg could possibly help me? I am also taking 500 mg l-lysine which calms me down. Do you think their combo is a bad idea?
   A. We can't predict any person's response to supplements. L Tyrosine may help some people with depression, but there are other supplements that could also help such as SAM-e and 5-HTP. It is important to use low dosages since these supplements can have side effects when taken in high dosages. We are not aware of any bad interaction between lysine and tyrosine supplements.

Q. I have a question about l-tyrosine. There is a tanning pill called pro tan e-z caplets with 1000mg of l-tyrosine in them. Could you tell me (before I decide to make my purchase of them) if this is a safe dose? It says it is ephreda free also. I would like a professional opinion before my l tyrosine purchase. That way I can decide if pro tan e-z caplets is a good purchase as a tanning pill.
   A. L-tyrosine, in dosage greater than 300 or 500 mg, may, in some people, cause heart rhythm problems, anxiety, and restlessness. We have not seen any evidence that taking a tyrosine supplement helps with tanning. You may wish to ask the company selling this product to show scientific papers that their product enhances tanning and does so safely.

Q. Antidepressants have induced anhedonia. Should I take tyrosine pills to correct the anhedonia?
   A. See the page on depression for ideas. We can't advice whether you should or should not take tyrosine or any supplement.

Q. I suffer from severe M.E. and have a border line thyroid function test and low DHEA. I felt better at first on the natural thyroid Westhroid which my doctor prescribed but then started with palpitations and pain at the back of my neck at night and some strange sensations in my chest. I heard about Thyrosine and after surfing the web read many sites talking about thyrosine and tyrosine. My question to you is are these two substances the same thing? I want to know if Thyrosine and tyrosine are one and the same first.
   A. We had not heard of thyrosine before, but a search on the internet shows it is the name of a product that has many different ingredients. Therefore, Thyrosine and tyrosine are not the same thing.

Q. Are there concerns to take L-Tyrosine and Kelp - when taking Amour or Synthroid? When I discontinued L- Tyrosine or L-Phenylalanine) and Kelp i felt sluggish. Does L-Phenylalanine have the same interactions and/or concerns as L- Tyrosine and Kelp when taking Amour or Synthroid ?
   A. It depends on the dosage used and your overall health and function of thyroid gland. Phenylalanine and tyrosine pills have a similar effect.

Q. Are Sam-e, L-Tyrosine, L-Phenylalanine, L Tryptophan, habit forming?
   A. There is no evidence that these supplements are habit forming.

Q. Q. I read info for brain production of dopamine for obesity, specifically over eating on a medical doctor's website. "Nutritional supplements can have a positive effect on brain dopamine levels and help with focus and energy. I often have my patients take a combination of of tyrosine (500-1,500 milligrams two to three a day), OPC grape seed or pine bark (1 milligram per pound of body weight) and gingko biloba (60-120 milligrams twice a day). These supplements help increase dopamine and blood flow in the brain and many of my patients report that they help with energy, focus and impulse control." Is N-Acetyl Tyrosine better than L-tyrosine?
   A. Some people prefer tyrosine others prefer N acetyl tyrosine. It is best, when combining different medications or supplements, to first learn how each one works for you by itself in order to prevent potential side effects with the combinations.

Q. I wanted to inform you that I took a yohimbe bark supplement in the evening. That morning I had taken 500 mg of a tyrosine pill. Soon after I took the herb, I noticed rapid heart beat. I had not had this effect as much with the tyrosine supplement alone.

Q. I've been experimenting with different vitamins, minerals, and herbs for about 10 years now to avoid synthetic medications, and I seem to have found a combination that works for me. One of the supplements I take is tyrosine, and I've been reading a lot lately that lower doses such as under 300mg are probably better. I take 1000 mg a day (and have been for years now) with short breaks of a few days once every month or two, and I've never had a problem with it. It is when I stop taking it for longer than about a week that I have what I call withdrawals, and start getting many of the symptoms that people report when they take too much of it, along with depression, OCD, and either insomnia or sleeping too much. I also take 500mg of taurine, 100mg of 5-HTP, 200 mcg of chromium picolinate, 1000mg of Omega-3, small amounts of ginkgo and DMAE, a good B-complex, and B-12. These are to help with bipolar, symptoms of ADD, such as poor memory, poor attention span, and feeling "foggy" (debilitatingly so), and to help with symptoms of hypoglycemia. My moods remain consistently stable when I maintain this regimen, I feel comfortably alert, my memory is better, and I don't have any issues with low blood-sugar levels. I'm writing because I'm curious about a few things, and if you're able to answer any of these questions I'd be most grateful! Am I taking too much tyrosine, even though anything less than 1000mg a day doesn't seem to do much of anything for me? I know each person is different, but I'm wondering if there's an amount that is too much, and if there's a drawback to taking it for extended periods of time, such as years. Also, why in the world would I have the opposite reaction to other people? Is that even heard of? And if you happen to know if this combination of supplements is harmful in any way, I would love to find that out too.
   A. Each person's body chemistry is different and therefore one has to find out through trial and error which supplements and in what dosages and combinations are most helpful. Long term studies with tyrosine supplements in terms of treatment for many months or years have not been done and therefore it is difficult to predict what kind of potential side effects may occur. Taking breaks from supplements certainly reduces the risk of the adverse effects. People do have quite varied effects to the same supplement or medications, including caffeine. Some people are able to drink coffee at night and sleep well whereas for most others caffeine will keep them awake.
      Q. Thank you so much for writing back. This information is helpful for my peace of mind! Funny you should mention caffeine - I'm one of those people who can sleep fine after consuming it. I will continue to "listen" to my body, and try to stay updated on research as I always have.

I am interested in a product Mind Power Rx with Bacopa, one of the ingredient is tyrosine - I have/ had cancer, is it OK to to take a supplement that contains tyrosine.
  The amount of tyrosine is small and we have not seen any human studies with such supplements to indicate any issues with cancer.

 
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