NOW Foods Supplements, L-Tyrosine 500 mg, Supports Mental Alertness*, Neurotransmitter Support*, 120 Capsules

I keep this at my bedside and take 1 after my alarm goes off, with a full glass of water. I'd usually have 2 or 3 cups of coffee once up but since taking these I only have one cup now. My mind feels a lot sharper and clearer, and without the caffeine jitters!

I wanted to wait until I had used this awhile before I gave a review to see how the effects last. I was very skeptical when getting this product because I was skeptical that something over the counter could make as big a difference as some people claimed. I researched a lot about its effects and how it works and since it made sense, I thought I would give it a try, but honestly didn't expect much. For years I have suffered from a "foggy head". It doesn't seem to matter if I sleep 8 hours a night, or 4, or 10, I always wake up tired and with brain fog that persists. Along with that, I've also dealt with depression over the years and some major irritability.As I tend to be pretty sensitive to most medications, I wanted to start out with a smaller dose to see how it would affect me. I opened the capsule and dumped half the contents out, then closed it again and took it with a glass of water. I had eaten about an hour before. I noticed some mild effects and that at work I was breezing through things that usually took me a lot longer to do. There was no stomach upset at all. After reading up on it, I saw that its most effective if taken on an empty stomach, but talking anything on an empty stomach makes me nervous as I've had so many meds make me incredibly nauseous if I didn't eat. The next morning I again dumped about half of it out and took it on an empty stomach and noticed a big difference. Within maybe half an hour the brain fog cleared and I felt truly alert for the first time in years with no jitters or stomach upset at all. The effects lasted until the afternoon and I took another half which got me through the rest of a long day at work. That night I slept great, and felt pretty good when I woke up. Since then I take a full one immediately when I wake up and before I eat anything. I've noticed if I eat anything high in protein before I take it the effects are greatly lessened. This is because l-tyrosine and protein use the same transporter to the brain, so it competes with the protein if you have them both at the same time. Taking a full one every morning keeps me alert and focused all day with no nervous energy, no anxiety, no jitters and no crash. I've been on this same dose for several weeks and it still works just as well. This is now a permanent part of my morning when waking up. I was amazed at the huge difference it made in my ability to concentrate, my focus, energy and my mood. It keeps me feeling pretty uplifted and happy. My life seems much better since I started taking this. This is the only brand I've used, so I have nothing to compare it to, but I will stick with this one. If it ain't broke...

Works just as it should. I’ve been taking NOW Foods L‑Tyrosine 500 mg to support mental alertness and overall focus, and it delivers. The capsules are easy to swallow and don’t upset my stomach. I’ve noticed sharper concentration during busy workdays. Definitely a product I’ll reorder.

I was pleasantly surprised by the initial results with L-tyrosine. Within the first few days, I noticed a clear improvement in focus, mental clarity, and overall mood. It provided a subtle yet effective boost that felt natural and helped me stay productive throughout the day without any jitters or crashes.However, after continued use, I observed that the effects began to diminish noticeably. It seems that my body quickly adapted to the supplement, and the initial benefits were no longer as pronounced. While it may still offer support at a baseline level, the initial sharpness I experienced was not sustained over time.This could still be a worthwhile supplement for short-term use or occasional support, but for long-term daily use, the diminishing returns are worth considering.

Noticing a change in awareness and energy levels. Working well as a supplement. The price and quantity is hard to match.

I take this brand of l-tyrosine daily, every morning, and it has helped me noticeably with my energy and anxiety levels. I have a fructose malabsorption problem that interferes with my uptake of certain neurotransmitter precursors, and supplementing with this on an empty stomach seems to help me focus and feel a little more motivated. I do take a much lower dose than recommended - I split the contents of each capsule up into four capsules, effectively taking 1/4 of a capsule every day, about 125mg, but I am so sensitive to medications/supplements that I typically take 1/4 to 1/3 the regular-strength dose for really everything (including things like ibuprofen and claritin). Taking a larger dose of tyrosine has a noticeable effect on my libido and also makes me feel extremely calm (and a little uncoordinated). As long as I wait an hour to eat after taking a small dose, I have mild, but positive effects. (Eating right away means I have no noticeable effects; I assume this is because other amino acids in the food I eat have higher priority and out-compete tyrosine.) If I stop taking it for a few days, I don't notice any awful withdrawal symptoms. This seems to be a much more predictable and less dependency-inducing supplement than I have heard L-DOPA to be, although I have not tried L-DOPA myself.On the flip side...I recommended this to my husband, who struggles with lack of focus and motivation (he's in a really thought-intensive occupation, so this is particularly disruptive). He took a full capsule every morning for a week or so. The first few days, he felt like he had a little more energy and motivation, and that he was able to lift a bit more on his workouts; he said it was about the same as a cup of coffee, except without the jitteriness, and the effect was strongest about 2-3 hours after taking it on an empty stomach and lasted several hours. However, after about three days, his mood shifted so drastically that he was really impossible to live with. He became extremely angry, on-edge, defensive, aggressive, critical, negative, and prone to violent outbursts. It was a complete and terrifying transformation; he became a brute, where normally he is a patient, gentle, kind man. It took a few days before I realized what was causing the change, and he stopped taking it. The next day, he returned to being gentle and loving, with no noticeable traces of the monster he'd been.Perhaps he needed a smaller dosage, although we weren't willing to try, and I'm not sure this would have helped. Really, I think his physiology wasn't meshing with the tyrosine supplementation, but I don't know how we would have predicted that before we tried it. Biochemistry is a complicated business.So, do I recommend it? I recommend that if you have difficulty focusing, getting motivated, and dealing with crippling anxiety, you try it, in low doses, and watch your moods carefully. Be prepared for the possibility that you become a raging monster, and if you do, stop taking this stuff ASAP. However, there's a chance that you'll have wonderfully positive effects from it, too, like I did. I say try it and see, just be mindful of what's happening.TL;DR: It made me calmer and more focused in small doses, but it turned my husband into a raging demon with regular-strength doses. Try it in small doses and watch the effects carefully. It may or may not be worth it. It was for me, definitely not for him.

High quality product

take these every morning as part of my routine. Not sure exactly how they work, but I do feel a bit more awake and focused since I started using them. Simple capsules, no side effects so far.