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CA
4.7
Based on 512 Ratings
5 Stars
411
4 Stars
68
3 Stars
23
2 Stars
3
1 Stars
7

4.7
Based on 512 Ratings
5 Stars
411
4 Stars
68
3 Stars
23
2 Stars
3
1 Stars
7

Most helpful positive review

Posted on Aug 2, 2021
14
0
1
12

I love this free-form powder as it is easy to dose according to how I am feeling. When taking a full teaspoon I felt irritated to the verge of being very pushy . But cutting it down to a quarter to a teaspoon daily makes me tackle my chores easily without being agitated.

Global reviews (512)

Product reviews solely reflect the views and opinions expressed by the contributors and not those of iHerb. iHerb does not verify or endorse any claims made in these reviews. Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Show more
Posted on Jun 5, 2023
8
0
0
0
Verified Purchase
Rewarded Review

L-Tyrosine is a free-form amino acid which rapidly crosses the blood-brain barrier. It is a precursor for the neurotransmitters dopamine, norepinephrine and epinephrine, as well as for thyroid hormones and enkephalins, important peptides ease messages of physical discomfort. L-Tyrosine is also a constituent of amino sugars (glycosaminoglycans), which play a role in numerous biological functions.

Posted on Jun 2, 2023
70
1
0
117
Verified Purchase
Rewarded Review

Tyrosine is a precursor to dopamine helps calm and makes me feel good , the ingredient is quality and mixes well into juice tastes pleasant , this product gives me energy and supports my underactive thyroid. I like this product as it is easy to take and has no side effects. Highly recommend it

Posted on May 8, 2023
60
0
0
3
Verified Purchase
Rewarded Review

The substance is involved in lipid metabolism, regulates appetite, improves melanin synthesis, normalizes the functioning of the adrenal glands, pituitary gland, and thyroid gland. I took for the thyroid gland and adrenal glands. I chose the powder form, because. it is more profitable and more convenient to receive. The capsule must be opened, and then immediately from a spoon under the tongue. By the way, my dosage is 1/3 teaspoon. Excellent in combination with iodine and selenium reduces TSH. It also helps the adrenal glands. I highly recommend. Great shape.

Posted on Jan 21, 2023
85
0
10
313
Verified Purchase
Rewarded Review

Pure powder, no fillers- love it! 1/4 tsp is 660 mg, it's big saving. I give it to my mom mornings in a glass of water. It doesn't dissolve completely but has no taste. It is easy to choose needed dosage especially if you know how to perform muscle testing. Tyrosine is amino acid needed by thyroid to produce hormones.Like it if it's helpful,please

Posted on Oct 5, 2022
73
0
0
75
Verified Purchase
Rewarded Review

I trust the quality of this brand and the ingredients they use. This product benefits me the way it’s supposed to, it does the job! It gives more energy, has no taste whatsoever. The package could be way smaller, no need to to use so much plastic for this amount of product.

Posted on May 19, 2023
47
10
0
33
Verified Purchase
Rewarded Review

Great quality ingredients, powder composition, easy to dose with a scale. Gives me a boost of energy and clarity. Taste is chalky but not unpleasant. Good to take before exercises!

Posted on Mar 14, 2023
2,005
0
0
272
Verified Purchase
Rewarded Review

I use it for the thyroid gland, I really liked it, because it was in the form of powder. It has no smell, taste and can dissolve in the mouth. I highly recommend this.

Posted on Feb 1, 2023
113
0
0
15
Verified Purchase
Rewarded Review

I like this because it's a powder rather than capsules. I use it to increase my dopamine. When taking it, I feel more able to accomplish what I need to do each day.

Posted on Dec 18, 2022
80
0
3
20
Verified Purchase
Rewarded Review

I really feel calmer when I use this and sleep better at night. But the price have gone up by almost 10$ fiancé I bought it 6 months ago!!

Posted on May 18, 2023
79
0
0
0
Verified Purchase
Rewarded Review

Is it normal for it to be slightly damp? It works well. Packaging could be a little smaller as there is lots of unused space inside.