Helps support natural restful sleep.*. What is L-tryptophan? L-tryptophan is an essential amino acid. The body does not produce L-tryptophan; it must be obtained through diet. L-tryptophan is a precursor to neurotransmitters serotonin and 5-hydroxytryptophan (5-HTP) the hormone melatonin and the B vitamin niacin. . How does L-tryptophan support health? Helps maintain serotonin levels for healthy mood.*. Supports a normal healthy attitude during PMS.*. Plays an important role in supporting natural restful sleep.*. May support a normal appetite.*. Why choose Vitacost L-Tryptophan? Supplies 500 mg of L-tryptophan per 1-capsule serving. Contains 120 servings per bottle. Suitable for vegetarians. Exceptional quality at an extraordinary value. About Vitacost. Vitacost nutritional products are manufactured to high standards of quality efficacy and safety. Each Vitacost product meets or exceeds the standards and requirements set forth in the FDA’s Code of Federal Regulation (21 CFR 111) Current Good Manufacturing Practices (CGMP). . . . *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose treat cure or prevent any disease.
(61 reviews) 41
Rating breakdown61 reviews
55 out of 61(90%)customers recommend this product.
"I have had trouble sleeping for about as long as I can remember. I take L-Tryptophan and your Melatonin plus Theanine every night about an hour before bedtime and it helps me to relax so I sleep better. There is no groggy or slow feeling when I need to get up, so for me, these are a great product."
"I like this product but It's best to get to bed within an hour after taking this because you can start to feel wired. I woke up 4 hours later a couple of times after taking this product and had trouble getting back to sleep, but because I was getting off of pain medications that helped me sleep."
"This doesn't work to put me to sleep. I have found that melatonin and a GABA supplement work best, but this seems to have no effect and it might even keep me awake. I think we are all different and since this can be processed differently in the brain, it might not work for one person but could work for another person. Just not for me though."
"this product has great reviews, but unfortunately it left me so groggy the next day. i didn't know what was happening to me. once i decided to stop taking this product it took about 3 days for me to get back on track and feel normal again. i know it works for other people, just not for me."
"This works similar to turkey and much easier to swallow in pill form. If you care about your health then NSI L-Tryptophan -- 500 mg is what you want in your body, My health and body feels so great inside and out with this pill. I am so happy to have found this pill."
"Must be taken on an empty stomach (at least two hours after eating) in order to realise optimal results. Also, best if you can set aside eight hours of sleep, otherwise you may feel a bit groggy with less sleep time. I take it two hours BEFORE retiring. I also take 3 mg of melatonin 20 minutes before I go to bed as well."
"I have been a restless sleeper for over a year now. I was recently in the hospital and needed my sleep. A friend recommended NSI L-Tryptophan, I didn't think it would work. But I was very pleased with the results. I'm sleeping just like I used to, all through the night. I think it's wonderful."