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๐งฌ Unlock your brainโs full potential with every capsule!
Doctor's BEST L Tyrosine Supplement offers 500mg of pure L-Tyrosine per serving, designed to enhance brain function, neurotransmitter synthesis, and thyroid health. This non-GMO, gluten-free formula supports focus, energy, and stress management, backed by over 35 years of scientific research and trusted quality.

| ASIN | B00Q8N4LYE |
| Age Range Description | Adult |
| Allergen Information | Gluten Free, Non-GMO |
| Best Sellers Rank | #83,235 in Health & Household ( See Top 100 in Health & Household ) #3,276 in Blended Vitamin & Mineral Supplements #3,511 in Sales & Deals |
| Brand | Doctor's BEST |
| Brand Name | Doctor's BEST |
| Color | No Color |
| Container Type | Bottle |
| Customer Reviews | 4.4 out of 5 stars 1,080 Reviews |
| Diet Type | Gluten Free |
| Dosage Form | Capsule |
| Flavor | Unflavored |
| Global Trade Identification Number | 00753950003163 |
| Item Dimensions | 2.38 x 2.38 x 4.44 inches |
| Item Form | Capsule |
| Item Highlight | L-Tyrosine 500mg Capsules, Brain Support for Adults, Amino Acid Support 500 mg, Precursor for Thyroxine Production by Thyroid |
| Item Weight | 3.68 ounces |
| Manufacturer | Doctor's Best |
| Manufacturer Part Number | DRB-00316 |
| Material Features | GMO Free |
| Model Name | Doctor's Best L-Tyrosine, Healthy Brain Function, Amino Acid, Healthy Glandular Function, Non-GMO, Gluten Free, 120 VC |
| Model Number | DRB-00316 |
| Number of Items | 1 |
| Primary Supplement Type | Magnesium |
| Product Benefits | Brain Health Support, Energy Management, Stress Relief |
| Recommended Uses For Product | Brain Health Support, Stress Relief, Energy Management |
| Special Ingredients | Amino Acid |
| Supplement Formulation | Individual Supplement |
| Total Servings Per Container | 120 |
| UPC | 753950003163 |
| Unit Count | 120 Count |
A**R
I recall...!
I was Pleasantly surprised by how much my memory improved after I took this 2-3 times a day for about a month. I suffered a head injury some years ago that significantly affected my memory. I took a shot with this (like we do when nothing has helped a health problem, so we just start throwing spaghetti noodles at the wall hoping one may stick), and I began to remember things...long term memories I never thought Iโd have back! Iโm not saying everything came back but it was definitely a noticeable change! It feels good to remember the little things, like how my dad would see if the spaghetti was cooked by throwing it at the wall lol! ๐ Thank you for that.
D**.
Do You Need Energy Or Umph To Get Up & Get Going? Here's Your help!
This L-Tyrosine helps me get up & go! It along with L-Tryptophan helped me get off of antidepressants!!! Now I did this with the help my psychiatrist, an MD & only suggest getting off antidepressants with your doctor's help. But this was my ticket to freedom from meds, sluggishness & an ultra dry mouth. The science that backs up conditionally essential amino acid is real & highly effective. I found this brand to work the best for me & I believe it can help others, so I highly recommend it. I believe you should talk to your doctor as I did & work with him/her as I did & you'll be yourself again & have energy. Now lots of prayer & a good counselor was necessary too, but all were a blessing to help me get up & get going again!
D**A
Effective for my ADD
I've been looking for an alternative to ADD drugs for a while but the amino acids I've tried, such as 5-htp, l-theanine, A LA, DHEA, and other blends I've tried helped with my depression and anxiety, but with the added element of daily physical pain, it's hard to keep focused and push myself to be productive. I was almost always mentally checked out. I was trying so hard not to fall apart emotionally that I just didn't deal with anything. L-tyrosine has helped me to turn things around. While not a miracle drug, it does help me to be focused, less anxious, and more productive. Definitely worth a shot if you've been stagnant due to anxiety, depression, physical illness, or ADD, and just want to get on with life. I take 2 in the morning with a b vitamin, followed by a 500 mg l-theanine at lunch time. ( it keeps me upbeat, and sociable) and I feel like a normal human being. Like myself. Solaray's l-theanine chewable works quickly but capsules are a better value.
W**E
3 things to keep in mind
1- Always balance with 5-HTP, otherwise you end up in a serotonin depletion situation. More on this in a book called the Mood Cure by Julia Ross 2- Add a small amount of EGCG to avoid breakdown of the amino precursors (tyrosine and 5-HTP) into neurotransmitters outside the brain. Otherwise this can cause long term health issues if you plan on supplementing long term 3- experiment with dosing until you get it right. I tried 500mg and it caused me increased anxiety/fidgetiness. I bought some empty capsules, a small scale and spatula and now I make my own 250mg capsules. Does my office look like a scene from breaking bad? yes. Does my wife think I'm a drug dealer? yes, but hey it's worth it
D**D
Good product
I started using this supplement for energy and also to help my thyroid function. I can definitely tell you that I know when I forget to take it because I don't have the energy that I normally would have.
S**H
I canโt tell
I have used other brands that I think gave me more energy. I canโt really tell a difference with this one.
F**S
Awesome
Gives me plenty of energy and more focus, I am taking vitamin C to help with absorption. I am very happy will order again thanks
R**H
Helps our sleep tremendously!
This helps my husband and I relax and sleep. Wouldn't be without it! It seems to work for those who have problems with their brain calming enough to sleep peacefully. So if you are one whose brain keeps working after you are almost asleep, try this. It might help. (Always check with a doctor before starting or stopping any meds or supplements. I am not a doctor and do not offer advice as a doctor. ;-)
H**I
Good
Good
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A**H
very effective product
After using more than 1year of this product , i notice the effect of this product ,i feel myself very active , mentally refresh and i realise that my memory power is much more better than before , due to too many research i found that Tyrosine has a very important role in the process of Increasing a DOPAMINE , EPINEPHRINE , AND NOREPINEPHRINE . its actually a precursor , and due to some reason of Studying ,i feel that i am wasting my 8 hr on only sleeping ๐ด , so Now I reduce sleep to 4hr ,soo due to my incomplete sleep , my brain neuro transmitters are not working Normally , i was feeling so sleepy ๐ช , tiredness , and uncomfortable , AND by Taking / Using this product ,I have totally forgotten My all Mental problems , And NOW I am using my 20 hr from a day I Have facing No problem by Sleeping Only a 4hr in a whole day . from this product i INCREASE my DOPAMINE Level.
D**H
Orignal and good
I'm glad that this is an original package. It's really hard to find good tyrosine in India.
R**H
Bad smell
Caspule smell like fevicol glue ๐คง
Trustpilot
2 months ago
2 weeks ago