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NOW Foods

L-Tryptophan Powder, 2 oz (57 g)

4.4 · 458 reviews
2,340 ₽

Supports Relaxation Encourages Positive Mood Promotes Restful Sleep Non-GMO A Dietary Supplement Vegetarian/Vegan Amino Acids Family Owned Since 1968 GMP Quality Assured L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. L-Tryptophan is critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and proper immune system function. Every lot of NOW® L-Tryptophan is tested to be free of Peak E and microbial contamination.

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Supports Relaxation Encourages Positive Mood Promotes Restful Sleep Non-GMO A Dietary Supplement Vegetarian/Vegan Amino Acids Family Owned Since 1968 GMP Quality Assured L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. L-Tryptophan is critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and proper immune system function. Every lot of NOW® L-Tryptophan is tested to be free of Peak E and microbial contamination.

Customer reviews

3.0
verified purchase
Tablets might be a better option.

If you’re looking for a form of tryptophan that is easy to take, I strongly suggest considering tablets over this powder. It is very pure, but it is completely insoluble in water. It is also extremely bitter (similar to pure BCAA powder) and the aftertaste is absolutely awful. I usually mix 1 gram with a little water to make a paste and swallow it down with a drink. Smaller doses of around 100 mg can also be mixed into yoghurt or smoothies quite inconspicuously. Taking it during the day tends to make me drowsy, so I only take it at night before going to bed. Note: The label says that two level ¼ teaspoons is approximately 1 gram, but I found just one level ¼ teaspoon to actually be between 1.2 and 1.4 grams.

10/22/2021
5.0
verified purchase
Excellent! Great for better sleep

This product helped me through a bout of insomnia, hipnic jerks , along with adrenaline surges and anxiety. Interestingly, this was set off by taking collagen. Collagen actually depletes L-tryptophan (they give this to lab rats to purposely deplete tryptophan which in turn lowers serotonin). So I took this product to get my serotonin levels back up. I'm so glad I found it as it gave me back my sleep and my sanity.

10/23/2020
4.0
verified purchase
Convenient L-Tryptophan Powder for My Cat

This L-Tryptophan powder seems to be of good quality. I actually bought it for my cat, and it has a calming effect on him. The powder is easy to add to his diet, and it doesn’t seem to affect the taste of his food. The package size is convenient, and the benefit of having just tryptophan and cellulose in the composition is great. I gave it 4 stars because I generally prefer products without any additional ingredients, but overall, it’s a great product!

8/20/2024
5.0
verified purchase
Magical sleep solution

I take less than an eighth of a teaspoon on my tongue with cherry juice every night about thirty minutes before bed, and I fall asleep naturally — like I've never slept before! Feels almost like a sleeping pill, but with no grogginess if I decide to stay up, and no hangover the next morning. I'm really happy with the results!

7/25/2024
5.0
verified purchase
Slept Like a Baby for the First Time in Years!

I bought this little tub of magic on a whim, honestly. For months, maybe even a year, my sleep had been a constant struggle. Tossing, turning, waking up at 3 AM – you know the drill. My brain just wouldn't quiet down, and I was perpetually tired. I'd read about its potential benefits for sleep and mood support, and figured what did I have to lose? I started with just a tiny scoop, about 500mg, mixed into a glass of water, about 30 minutes before bed. The powder dissolved surprisingly well, and honestly, it’s practically tasteless. The first night, I was asleep within 20 minutes, which for me was revolutionary. Over the next week, not only did I fall asleep faster, but I was also staying asleep through the night, waking up feeling genuinely refreshed for the first time in what feels like forever. My dreams even feel more vivid and pleasant, and a subtle sense of calm has started to replace my usual anxious bedtime thoughts. It hasn't completely erased my daily stresses, but it absolutely provides a peaceful, quiet mental space before sleep that I haven't experienced in ages. If you're wrestling with your pillow every night, this could be the gentle nudge your system needs to find its zen. Highly, highly recommend trying it.

6/19/2025
5.0
verified purchase
NOW Foods L-Tryptophan is a high quality product that has been incredibly helpful in my daily life

NOW Foods L-Tryptophan is a high quality product that has been incredibly helpful in my daily life. I have noticed an improvement in my sleep and overall emotional state after starting to use it. NOW Foods L-Tryptophan powder from NOW Foods dissolves perfectly in water, making it easy to use. It does not have an unpleasant taste or odor, which makes taking it more comfortable. One important aspect of this product is its natural effects on improving mood and reducing stress. I experience greater relaxation and calmness after consuming it. Thanks to this product, I have noticed an increase in concentration and improved cognitive functions. It has become an indispensable support in my daily activities.

12/13/2023
5.0
verified purchase

I've been taking L-tryptophan supplements for a few months now, and the results have been fantastic. My sleep quality has significantly improved—I fall asleep faster and wake up feeling more refreshed. It's also helped in managing my mood swings and anxiety levels. Highly recommend it for anyone looking to improve their overall well-being naturally!

8/2/2024
3.0
verified purchase
Doesn’t work for me

I started taking this in hopes of falling and staying asleep easier, but it does not work for me. But I knew beforehand that it works for some people, others don’t react well to it. I will continue to take it for a while still since I’m taking L-Tyrosine on a regular basis and Tryptophan is advised when taking that long term

6/1/2022
4.0
verified purchase
A tryp on tryptophan!

Product use is as expected and intended. I found it does not mix well in liquids but otherwise no complaints as far as overall quality and use purpose

11/29/2025
5.0
verified purchase

It works very well for sleep. The recommended dose did not work for me but by the trial and error finally found as right one.

11/17/2025