In Stock
Source Naturals

L-Tryptophan, 90 Tablets

4.7 · 235 reviews
3,901 ₽

Dietary Supplement With Vitamin B-6 Mood, Relaxation, Sleep The essential amino acid L-tryptophan is the precursor for the synthesis of melatonin and serotonin, a hormone and a neurotransmitter involved with mood and stress response. It helps support relaxation, restful sleep, and a positive outlook. This tryptophan tablet includes vitamin B-6, which is required to convert tryptophan to serotonin. If needed, L-tryptophan is converted to niacin in the body, an important B vitamin. Source Naturals L-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality.

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Dietary Supplement With Vitamin B-6 Mood, Relaxation, Sleep The essential amino acid L-tryptophan is the precursor for the synthesis of melatonin and serotonin, a hormone and a neurotransmitter involved with mood and stress response. It helps support relaxation, restful sleep, and a positive outlook. This tryptophan tablet includes vitamin B-6, which is required to convert tryptophan to serotonin. If needed, L-tryptophan is converted to niacin in the body, an important B vitamin. Source Naturals L-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality.

Customer reviews

5.0
verified purchase
I sleep like a baby!

With this one-ingredient supplement, I sleep like a baby! I take 2 capsules at night, they are a bit big in size, so beware if you have difficulty swallowing. But otherwise, it definitely has the benefit of promoting deep and long sleep, and I wake up the next morning well-rested and full of energy.

8/25/2022
5.0
verified purchase
It works!

This really works helping me to sleep. I do recommend to people who has insomnia problem. One thing to suggest would be the size of the pill is quite big if you get 1000mg bottle. Better get 500mg and it’s way more easier to swallow. You can see the size difference for 500 and 1000 mg in the photo.

6/11/2025
5.0
verified purchase
sleep aid

taken 3 + magnesium fall a sleep easiely . taken this for a years .

8/26/2024
5.0
verified purchase
Great product for better sleeps.

Two tables within 30 minutes before bed help me fall asleep faster and improves my quality of sleep.

11/8/2024
5.0
verified purchase
Better than Valium

Excellent product. Very calming and sleep assisting. Good for anxiety and inability to sleep. It realy does what it is supposed to do and more! Highly recommended!

2/27/2024
5.0
verified purchase
Essential Supplement

This dosage of 1000mg of tryptophan with cofactor vitamin b6 works extremely well. It helps lift my depression and helps with fatigue. I fall asleep easily and feel rested when I wake up. Other cofactors that are necessary are magnesium and vitamin b5 to convert tryptophan to serotonin and melatonin. These could be taken separately. I found the 500mg to be insufficient.

8/16/2016
5.0
verified purchase

This is a good supplement. It's supposed to help me sleep better or not, I'm not so sure. But I have no allergic reaction to it.

3/27/2026
5.0
verified purchase

Quality ingredient for a good night sleep, increase energy after a good night rest.

4/12/2025
5.0
verified purchase
Прекрасно!

Thank you very much for this product, it suited me, I like the packaging, comfortable and stylish, I will order more of these products, and recommend them to all my friends and relatives! good!!

2/23/2025
5.0
verified purchase
Works good for sleep.

Are we great products from source and naturals. Convenient tablets. Takes longer to breakdown.

12/19/2024