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Source Naturals

L-Tyrosine, Free-Form Powder, 3.53 oz (100 g)

4.7 · 706 reviews
1,627 ₽

Dietary Supplement L-Tyrosine is a free-form amino acid which 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 which ease messages of physical discomfort. L-Tyrosine is also a constituent of amino sugars (glycosaminoglycans), which play a role in numerous biological functions.

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Dietary Supplement L-Tyrosine is a free-form amino acid which 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 which ease messages of physical discomfort. L-Tyrosine is also a constituent of amino sugars (glycosaminoglycans), which play a role in numerous biological functions.

Customer reviews

5.0
verified purchase
mixed feelings about tyrosin

worked well for all that tyrosin can help with, however, it also gave me very serious side effects. I gave it five stars as there is no problem with this specific product and it delivers what it promises. just be aware that certain amino acids are strong, even in small dosages, and can affect the brain in unexpected ways.

10/2/2020
5.0
verified purchase
Stress management & mood

L-Tyrosine is a nonessential amino acid may help with stress and depression. This is a good quality product which supports a number of important biological functions. Comes in powder form and contains only L-Tyrosine unlike the capsules which include a number of fillers. Be aware that L-Tyrosine is known to have an impact on the thyroid so consult your healthcare practitioner if you're taking associated medications. *** Please 'like' this review if U found it helpful ***

4/3/2024
5.0
verified purchase
Excellent quality and unbelievable value for money!

I’ve been using the Source Naturals L-Tyrosine Free-Form Powder for a few weeks now, and I couldn't be happier with the results. It has quickly become an essential staple in my daily supplement routine. The quality of the ingredient is top-notch. I love the versatility of the powder form—I usually mix it directly into my pre-workout drink for an extra boost of focus, but it also works great when taken on an empty stomach between meals. Value-wise, this product is a steal. The 100g container might not look huge at first, but considering that a daily dose of 0.7g to 1–2g is more than enough to feel the full effects, this size will easily last you for months. If you are looking for a clean, effective, and budget-friendly L-Tyrosine supplement to enhance your focus and daily energy, this is definitely it. Strongly recommended!

7/30/2026
5.0
verified purchase
Easy to take

This product is easy to take due to its powder nature. Capsule and other forms are too strong for me, this way I can gradually introduce this powder into my system and see how much my body needs. I appreciate this brand.

7/1/2026
5.0
verified purchase
L-Tyrosine

I recently tried Source Naturals L-Tyrosine powder, and I find it quite effective. It mixes easily in drinks and has a neutral taste. I've noticed an improvement in my focus during busy days. Many reviews highlight its benefits for mood, and I can see why. The container is a good size and lasts quite a while.

12/27/2025
5.0
verified purchase

This AA is used to make dark hair pigment. Worth a try if you experience hair discoloration.

10/27/2025
5.0
verified purchase
Great for sleep deprived days

Really makes you feel how you should really feel everyday if you weren’t sucked into social media and all this extra bs that you do everyday for no reason that drain you and allows you to actually so the things that benefit your life and you should be doing like training and so on. Just have to start and oh boy this definitely gives you the ability to start things easily. Use on sleep deprived days, but do not use everyday, it will ruin your brain’s natural ability. And you won’t feel the same benefits with everyday use. I suggest you guys research what huberman recommends for this supplement. Which is usually in days where there is huge stress on you or you are massively sleep deprived and have to get through the day, it really helps on those days. Great quality and packaging is great. The taste is good I would say. Actually like it. I drink it with water whenever I need to.

8/27/2025
4.0
verified purchase

It's not as effective as another brand but I like that the powder form is an option and that it doesn't taste bad.

8/10/2025
5.0
verified purchase
I take every now and then

L-tyrosine is a non-essential amino acid that the body produces from phenylalanine. It plays a vital role in various bodily functions, including brain chemistry, melanin production, and hormone regulation

5/23/2025
5.0
verified purchase
good size

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3/14/2025