Superior Labs L-Tyrosine 500 mg, Pure Non-GMO Nootropic Amino Acid, High Absorption, Mood & Focus Support, Stress Relief, Cognitive & Mental Clarity, Thyroid & Alertness Support,120 Veg Caps

I have been buying from SUPERIOR LABS for some time now, always High Quality very good products.

Gentle sleepiness. Non addictive. No hangover. I take 3 pills at bedtime. Don't eat right before taking. Take on a mostly empty stomach for full potency. On difficult nights you could add one more pill without oversleeping concerns.

It's definitely gave me energy and clarity of mind for about 4 hrs. It has side effects like head ache and joint pain. I only took it 2 days and the head ache lasted 4 days. Way to strong for me

It was great

Yes it works, but if you have high blood pressure proceed with caution. My blood pressure was elevated at my doctors office. It was 190/99 heart rate 124. My doctor told me to stop taking it immediately. This amino acid could elevate blood pressure in some people.

Works as advertised. Improved my energy level, which was very low.

I'll be honest, I don't know much about it, but my healthy sister really wanted this, so apparently makes a good gift for people who have a fit lifestyle. She was happy with it.

I started taking this to support my thyroid function. I was pleased with the energy level that I noticed increasing and the all around better well being. The crazy thing that I thought at first must be my imagination- I swear my hair color started coming back. My hair stylist wanted to know when I started coloring my hair again.( I had used henna a couple of years ago as a lark, and it was a fiasco. ) Realizing if she noticed I must be on to something, I looked it up on the Internet can natural hair color come back -and the answer was a connection between tyrosine and hair color. I hadn't even thought of it being the supplement! I will continue taking it to support my thyroid and reap the benefits.