SKU: 31791055435

NutraBio | L-Tyrosine | 300 Servings

Sale price$13.49 Regular price$14.99
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

NutraBio | L-Tyrosine | 300 ServingsStraight up fermented L Tyrosine, fully labeled and easy to stack NutraBio L Tyrosine Pure Grade Amino Acid keeps it simple with just one ingredient: free form L tyrosine in a clean, fully labeled powder, no fillers or extras. That's key because tyrosine isn't for throwing into a big mix. It's a specific amino that helps with brain chemical support, perfect for custom stacks when you need better focus, stress handling, or sharp thinking during

Straight-up fermented L-Tyrosine, fully labeled and easy to stack

NutraBio L-Tyrosine Pure Grade Amino Acid keeps it simple with just one ingredient: free-form L-tyrosine in a clean, fully labeled powder, no fillers or extras. That's key because tyrosine isn't for throwing into a big mix. It's a specific amino that helps with brain chemical support, perfect for custom stacks when you need better focus, stress handling, or sharp thinking during workouts without relying on heavy stims.

L-tyrosine is the building block for catecholamines like dopamine, norepinephrine, and epinephrine. In real life, that means it helps with staying alert, motivated, attentive, and handling stress. That's why you see it in nootropic and pre-workout products with caffeine: caffeine ramps up those chemicals, and tyrosine gives your body the raw stuff to make more. The combo makes sense on paper, even if there aren't direct studies just on L-tyrosine plus caffeine in the data we have.

With 500 mg per serving, it's a solid starting point that's easy to adjust. That's lower than the 2g or even 10g doses in some studies, like ones on alertness during tough tasks or staying warm in the cold. Other research used up to 150 mg/kg for exercise but didn't boost endurance in cyclists. Bottom line: L-tyrosine isn't a surefire win for longer workouts, and 500 mg isn't a huge dose compared to big-study amounts. But it's great for mixing in stacks and dialing in your own amount. Since this is a pure powder

NutraBio L-Tyrosine by NutraBio contains 500mg L-Tyrosine (fermented), a clinical dose for muscle recovery and growth.

Key Highlights

  • 500 mg fermented L-Tyrosine per scoop — that's a clean hit of this amino that supports brain chemicals for focus. Great for folks who want targeted help without getting stuck in a stim mix or big nootropic blend.
  • Free-form amino setup — not the kind tied up in food proteins. This free-form version is easy to measure, stack, and use for pre-workout or brain-boost needs.
  • Totally clear single-ingredient label — just one active with its dose, no secret blends. In a world where tyrosine hides in 'focus complexes,' this lets you know exactly what you're getting.
  • Smart 500 mg serving — not the massive doses from studies, but perfect for tweaking your intake. Works well for newbies, caffeine pairers, or pros who like to ramp up carefully.
  • Fermented source — it's called out on the label, not some vague stuff. Fits for people wanting clean, veggie-friendly aminos without junk.
  • 300 servings in the tub — made for everyday use and fine-tuning your stacks. Gives you flexibility for regular days, gym sessions, or extra-tough times instead of just a few big hits.
  • Pairs great with caffeine — caffeine boosts those brain chemicals, and L-tyrosine helps supply the building blocks. That's why it's a go-to in solid focus and pre-workout setups.
  • Good for brain-heavy days, not only workouts — studies check it for alertness, choices under pressure, and stress spots. Makes it handy beyond just lifting.

NutraBio L-Tyrosine by NutraBio contains 500mg L-Tyrosine (fermented), a clinical dose for muscle recovery and growth.

Who Is This For?

  • Students and desk jockeys handling long focus stretches. As a brain chemical builder, this gives a simple way to stay sharp without a full nootropic pile-on.
  • Lifters who do caffeine but want a clean sidekick. Tyrosine plus caffeine just works: caffeine pushes the chemicals, tyrosine supplies the fuel.
  • Late-day gym folks skipping heavy stims. 500 mg no-caffeine here means lighter focus help or your own small caffeine add-in.
  • Stack builders who hate secrets. One clear ingredient and dose makes mixing with creatine, electrolytes, pumps, or nootropics straightforward.
  • Minimalist types who know their winners. If you skip sweeteners, stims, or filler blends and just want fermented free-form L-tyrosine, this hits.
  • Shift workers and stressed pros needing steady minds over pumps. Tyrosine fits where alertness, choices, and stress handling count.

How to Use

Stir 1 scoop into a bit of water and down it 30-60 minutes before lifting, studying, or anything brain-heavy. It's unflavored pure amino, so shake or stir well for no clumps. Start with 1 scoop to see how it hits, especially with coffee, energy drinks, or stim pres. Pros might double up, but the label's 500 mg, and studies go higher, so adjust thoughtfully. Empty stomach is common for aminos, but with food's okay for comfort. Stacks awesome with caffeine, creatine, electrolytes — no big overlaps. No stim crash worries from tyrosine, so no need to cycle like heavy pres. Keep it sealed in a cool spot, and clumping's normal in no-filler powders.

What to Expect

First 0-10 minutes: don't expect much from L-tyrosine alone at 500 mg — it's not a stim or feel-good hitter. 10-30 minutes: with coffee or pre, that's when you might feel a cleaner mental kick-in, more from the combo than tyrosine solo. 30-90 minutes: it works quietly, backing up focus while your stack handles the upfront stuff. Days 1-7: figure out your sweet spot — solo for light brain help or with caffeine for more punch. Weeks 2-4: no buildup needed, so it's all about smart, steady use for better stacks. Basically, it's for specific spots, not long-term loading.

Key Ingredients

  • L-Tyrosine — 500 mg — Catecholamine precursor support for cleaner focus under demand

NutraBio L-Tyrosine by NutraBio contains 500mg L-Tyrosine (fermented), a clinical dose for muscle recovery and growth.

Frequently Asked Questions

How much L-tyrosine is in each serving?

Each scoop provides 500 mg of fermented L-tyrosine. That is a modest, stack-friendly serving rather than a large standalone clinical dose, which is why many users appreciate it for precision dosing.

Is 500 mg of L-tyrosine a clinical dose?

Not relative to much of the higher-dose literature. Studies in the provided research set used 2 g, 10 g, or bodyweight-based protocols up to 150 mg/kg, so 500 mg is better described as a conservative, useful entry dose for flexible stacking.

What does L-tyrosine actually do in the body?

L-tyrosine is a precursor to catecholamines such as dopamine, norepinephrine, and epinephrine. That is why it is commonly used in formulas aimed at focus, alertness, and stress-demand support.

Will I feel this immediately like caffeine?

Usually not. At 500 mg and with no stimulants in the formula, the effect is typically subtle and more noticeable when stacked with caffeine or used during mentally demanding situations.

Can I stack this with coffee or a pre-workout?

Yes, that is one of the most logical ways to use it. Caffeine promotes catecholamine activity, while tyrosine provides precursor support for catecholamine synthesis, making the combination mechanistically complementary.

Is this a good pre-workout on its own?

Not in the traditional sense. This is not a full pre-workout because it contains no caffeine, pump ingredients, creatine, or endurance support—just L-tyrosine for targeted focus-pathway support.

Do I need to cycle L-tyrosine?

There is no standard requirement to cycle tyrosine the way many users cycle heavy stimulant products. Its use is typically guided by need, stack design, and how often you want extra catecholamine-precursor support.

Are there any fillers or other ingredients in this powder?

No. The formula is just fermented L-tyrosine with absolutely no other listed ingredients, which is a major advantage for users who want a clean stack-building product.

Who should avoid L-tyrosine?

People using MAO inhibitors, individuals with bipolar disorder or related psychiatric conditions, those with a history of melanoma, and pregnant or nursing women should not use it without medical guidance. Thyroid-medication users should also consult a healthcare professional first.

Why choose a powder instead of capsules for tyrosine?

Powder gives you finer control over intake and makes it easier to scale up if you want more than 500 mg. It is also easier to combine into a customized pre-workout or nootropic stack without swallowing multiple capsules.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 31791055435

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 675 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Steve Hall
Fort Morgan, US
★★★★★ 5
These Budget Earbuds Actually Impressed My Wife (and Our Wallet)
Style: Standard, Color: Ocean Blue
We’re retired and try to be smart with money, so when my wife wanted a pair of wireless earbuds for her daily walks and audiobook listening, I wasn’t about to drop $150+ on a big name brand. After researching, I took a chance on these TAGRY earbuds and I’m honestly glad I did. She’s been using them almost every day for a few months now, and they still work great. The battery life is legitimately impressive — the case shows the charge level with a little LED display, which is surprisingly handy, and we easily get several days of use before needing to recharge. The wireless charging is convenient too. Sound quality is clear and perfectly decent for the price — good enough for her favorite music, podcasts, and even taking phone calls in the house. They stay in her ears well during walks, and the IPX5 waterproof rating gives us peace of mind when it’s drizzly out. The only small complaint is that they’re not quite as comfortable for really long wear (she sometimes switches ears after a couple hours), and the bass isn’t super deep compared to premium models. But for everyday use, that’s a very minor gripe. Overall, these have been a solid, no-fuss purchase that delivers way more than we expected for the money. If you’re a senior, on a budget, or just don’t want to overpay for earbuds, these are worth trying. Hope this helps someone!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
D
Verified Purchase
Derrick Lopes
Lexington, US
★★★★★ 5
Really great pair of headphones
Style: Standard, Color: Black
These headphones work really well. They charge up quickly and the battery lasts a long time. These are way better than my old pair that I replaced with these. Great price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
M
Verified Purchase
Matthew
Boise, US
★★★★★ 3
Good Wireless Earphones Option for Price
Style: Standard, Color: Black
Works well compared to similar products. For around two years I was using a similar, different brand of wireless earphones also purchased off of Amazon, and they worked okay. I had originally switched over to wireless because my old headphone jack finally stopped working, unfortunately; now, of course, my new phone doesn't even have a headphone jack in the first place. I started buying these when I was no longer able to purchase from the previous brand off of Amazon. They were both around the same price and looked relatively similar. After a few months of using these, I can say that these are better than my previous brand, which I will refer as P.B. for short moving forward. As an avid music listener, these get the job done. For starters, they pair to my phone much faster (3 seconds max) as opposed to P.B. (7-12 seconds), they're also much better at keeping debris, junk, and other foreign materials out of the inner parts; I'd have to buy new earphones from P.B. every 3-5 months for this very reason. Perhaps my biggest compliment is the fact that the interactive "buttons" on the top sides of these earphones are far less sensitive than P.B. I'm personally not a huge fan of these buttons in the first place, but I can confidently say that I've accidentally pressed those sensors on these earphones relatively far less (maybe 2 or 3 times a week) then P.B. (at least 10 times a week). The case is also pretty durable; if I were to have dropped P.B.'s case with the earphones inside, there would have been a 100% chance that they would have gone flying; these, however, from the few times I've dropped the case, have stayed inside the case, undamaged. Battery life for both is about the same (about 4-5 hours but haven't really noticed a whole lot), as is/was audio quality. Overall a good product for the price; my only complaint is with the occasional, accidental, button press, pausing my music, which can't be disabled as far as a know. Frustrating, as this was a problem that I had with P.B. as well, but not a deal breaker. For casual music listing, this shouldn't be a problem. Originally had to return my first pair for issues with the hinge on the case breaking, but was sent a new product at no cost and haven't had any problems with the new one. 10/10 for price, 8/10 for audio quality, and 7.5/10 for battery life. Update: after a few more months of further usage the earphones still function well and as intended. My only new complaint is regarding the charging case used for the earphones. Normally, you place the earphones in their respective charging slots, close the case, and done, that's it. That's all that needs to be done in order to unpair and charge your earphones. Unfortunately, as of recently, the case itself doesn't seem to be closing all the way anymore. I didn't even notice at first, since the case appears to still close as it used to, but the case now requires extra emphasis when closing to ensure proper charging. The battery power display on the front of the case will let you know if the case has closed all the way by displaying the "charging" animation for either/both of the earphones. I must admit, this is by far the only truly frustrating experience I've had with this product; if the case isn't properly closed, the earphones not only won't charge, but they'll continue to broadcast audio from your phone. A few times now I've attempted to play audio through my phone speaker, only to realize that one or both of my earphones aren't properly charging in their case. This is my replacement pair, which I received because of the hinge falling apart on my original pair; I've had this current set of earphones for around two months now, and just started having this problem with the case about a week ago. Very disappointed to have a problem this prominent only two months out. Right now the issue is 50/50, but if I put in the extra thought to ensure that the case is closed, that does seem to help quite a bit. Still leaving this as a positive review because at the end of the day the earphones still work just as well as when I received them, although it is disappointing that the case is now uncooperative half the time after two months of gentle/normal use. Perhaps a third-party "skin" for the case would help with this issue; if it persists I will consider that option. Wish I could rate 3.5/5 stars.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
J
Verified Purchase
Justin
Chelsea, US
★★★★★ 5
Great headphones
Color: Black
So far im really enjoying these headphones, for the price I paid these are amazing. Significantly better than the slightly cheaper bluetooth headphones I usually get, twice the volume, base and sound quality. Its very light weigh and comfortable to wear too. Battery also appears to be exceptional, ive used it for hours now and the battery is still nearly full. Downloading the app is essential, it dramatically helps with improving and customizing the sound to your personal preference, the apps easy to install and use so there's no reason not too. Assuming these last awhile, its easily 5 stars for the price alone.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
A
Verified Purchase
Alan F. Jordano
Dallas, US
★★★★★ 5
I AM IMPRESSED
Color: Black
The product arrived well packaged. There was a delivery delay but it was not horrendous and to be expected given that it was ordered during Parime Days, The headphones arrived almost fully charged, Set up was relatively easy, but you really do need to use their app to complete the set up process. The app also allows you to change some settings and select equalizer settings that work for you. The switches have a nice feel to them. They do have raised areas designed to help you find the correct switch by feel. There are times however when I find that it is easier to adjust the volume using the phone or I remove the headphone to make a change. This is a very subjective items so you may not have the same issue. No stars were deducted for that reason. These are an on ear device. It was not uncomfortable to me, but it did take some getting used to and here again...Personal preference comes into play. On a warm and humid day you may experience some sweating where the ear cup rides on your ear. That may allow for some movement / shifting of the headphone depending on what you are doing. They may thus not work out well for use doing exercising as an example. The sound quality is great at this price point. I have Bose ear buds. The sound from this device is not Bose quality and you should not expect it to be Bose quality. It is good to very good however. The equalizer settings allow you to control all five typical equalizer settings PLUS a separate adjustment for th4 bass. Paring was easy and fast. The connection remains stable most of the time. There is a selection that allows you to select either top quality sound or a more stable connection. I chose sound quality an the vast majority of the time the connection was stable with no noise present. There may be times however, that due to local conditions / interference you may have a little popping or very brief drop out. I have worn these headphones a LOT since they arrived and while I have experienced that, it was very limited. Now I also have a lot of electric / electronic devices in use on my property and that will may explain what I experienced. I did have some interference from some household devices when I wass very close to them. The battery life seems to be very good. I have worn m for several hours and the voice system still indicates 100% at startup. Unlike my Bose products the battery monitoring system is not linear where it will call out 100%, 90%, 80%b etc... It may call out 100% until the battery hits 50% (As an example) and then te voice system will drop from stating 100% to 50%. I do not see that as an issue or negative given the very long stated by the manufacturer battery life, and I have no disagreement with their claims about battery life aty this point in time, So again...Thus far I am very pleased with the fit, quality, and sound quality of these headphones. Do bed aware that tey are NOT noise cancelling. There will be some outside noise reduction dur to the ear cups of course.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 31, 2024

recommand products