It’s my second week of taking this daily. When I wake up I take 3 caplets and sometimes a few more through the day. I do tech support for a huge company and it’s very stressful. I woke up every day in panic mode that would eventually die down halfway through the day. Lately I haven’t had this anxiety when I get up or if I do it fades off and seems to go away. Today my manager stopped me right at my desk and was extremely rude and nasty towards me over a mistake I made and though it angered me, I didn’t feel the way I normally would feel and I was able to accomplish my job with minimal stress today. I feel like this has helped in some way. I was very skeptical at first but it does seem that it has helped me at least before a stressful work shift. I haven’t been getting that dreaded panic anxiety before work. That is a tremendous feat. I won’t say this supplement has done all of the work but it does seem to also require some change to how I approach as well but I do definitely feel I’ve benefited from this. I will update as time progresses.2 weeks later:I take several caplets a day. I haven’t had the panic and I skipped two days and felt pretty decent. I didn’t feel as though I focused more. In fact at work I have upped the dose and felt impatient and just a bit restless and not exactly as serious about my job as I was before. I consider this a drawback. I might lower that dose or skip a day or two a weekSix months later:I managed to stop taking them for about two months since I was sent to work from home. I didn’t feel a need to have them or notice a change with stopping them and they didn’t seem to be effective. However, I’m in a bad rut with work anxiety yet again and will try once more to see if it helps. I feel that reporting this as time goes along can help people decide if this is something to try. I’m not sure it will help but I’m desperate again. I stopped taking before because it didn’t seem to work anymore or really do anything but give me an upset stomach sometimes.2 weeks after:Not sure there’s a difference. I honestly don't feel like it’s helping much.1 year later: finally ordered a bottle and nothing. If anything i may be feeling worse after taking them. It doesn’t help my anxiety at all. I feel way worse than I have prior to taking them. It’s like taking a placebo. Another reviewer stated they felt like taking this was hit or miss. All along maybe it was just me and not the l-tyrosine helping along the way. (3/2021)December 2021: nope doesn’t help. I have a different job now and started them, they haven’t changed and I haven’t benefited from it. I just feel like it does nothing at all. I’m sure this will stop since it’s a waste of money. I didn’t want to take prescription medication for my anxiety and work stress so I tried this. It may help some people but not me.I take it with my coffee. Doesn't make me sleepy just keeps me cheery.Absorbs well and well tolerated. increased levels can be measured in the blood - proof it works.I have skin cancer so I started taking this product to build up the melanin in skin and it’s working! This girl is happy!!!This was an economical alternative to my previous brand, the price of which suddenly shot up 20%. However, I split the capsules, making 2 into 3, and this powder is puffy and a bit sticky, making that more challenging than my previous brand as it is harder to pour out of the caps without spilling, and also needs a lot of tapping to get contents to fit. Possibly this is due to fewer additives, which I can't complain about, and it won't be an issue for people taking full caps.Helps with my focus and ADHD. I take it with my meds, helps a lot more.Darnit life is stressful and that is without the corona virus monster in our midst. I did my homework on this little beauty and know that L-Tyrosine is my new best friend (sorry humans' you have too much drama). Now, I cannot attest to the quality of the products in terms of 'purity'. And it is my first go with this brand. But, so far its doing what I am expecting. Could it be the placebo effect bc I have a positive experience with another brand of L-tyrosine? Why yes! but that is the beauty of the placebo effects - those sugar pills work and that is all that matters to the recipient. I'm not saying these are sugar pills!!! I am saying: THEY WORK!I love this product and brand. I use daily and have bought multiple times.Llego en tiempoExcelente calidadMuy buenas!!