Source Naturals, L-Tryptophan with Coenzyme B-6, 500 mg, 60 Tablets
You purchased this item onView this order
- You earn loyalty credit for every order you place at iHerb!
- Loyalty credit is equal to 10% of the value of your order, excluding shipping charges.
- Your loyalty credits are valid for up to 60 days from the date of your last purchase.
This product is already in your Wish List.
View Wish List
This product is now in your Wish List.
- Dietary Supplement
- Mood Enhancement and Sleep
The essential amino acid L-tryptophan helps support relaxation, restful sleep, and a positive outlook. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. This tryptophan includes the activated coenzyme form of vitamin B-6, called P-5-P, that is required to convert tryptophan to serotonin. L-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity. If needed, L-tryptophan converts to niacin in the body, which supports circulation, a healthy nervous system, the metabolism of food, and the production of hydrochloric acid for the digestive system. Source Naturals L-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality.
1 tablet three times daily, between meals and preferably with fruit juice. To support restful sleep, take 3 tablets before bed.
Dibasic calcium phosphate, stearic acid, modified cellulose gum, and silica.
Caution: If you are pregnant, may become pregnant, breastfeeding, or are taking medications such as SSRIs or MAOIs consult your health care professional before using this product.
Store in a cool, dry place.
Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.
|Serving Size: 3 Tablets|
|Servings Per Container: 20|
|Amount Per Serving||%DV|
|Vitamin B-6 (from 13 mg of pyridoxal-5'-phosphate [Coenzymated])||9 mg||450%|
|†Daily Value not established.|
I have tried varieties of L-Tryptophan. Even one compounded by a pharmacist. This version with the Coenzyme B-6 is the most remarkable. I feel better quickly and sleep very well at night. It helps with daily stress and is perfectly safe. Eliminates many cravings for sugar and caffeine. A great investment in my health. Wouldn't be without it.
The inclusion of B6 as p5p was a good choice in conjunction with tryptophan. The Dr. Best formula includes B3 as niacinamide (which is a known soporific agent), but having added my own niacinamide, I cannot perceive any difference. Melatonin is synthesized AFTER serotonin. The synthesis of serotonin (and other neurotransmitters) is catalyzed by a B6-dependent enzyme. Furthermore, B6 is required to manufacture Niacin from tryptophan. Thus a reason one might choose tryptophan over melatonin is NOT to skip any intermediary steps (there are a few studies showing that direct melatonin supplementation reduces levels of intermediary products). I use low-dose melatonin anyway (Same brand, sustained release) because sleep is scarce.
Posted by 5113275771700385711 on Jun 02, 2016
good and cheap small portions good price
Posted by 5208514601253008853 on Mar 05, 2016
This seems to do the job as described. I sometimes need a little something for sleep.
Posted by 5108625530090015951 on Feb 25, 2015
I take two of these before bed and i find I have a more restful sleep and don't wake up during the night. I like the Source Naturals brand, I have tried a few different supplements from them and I find they've worked better than other brands.
At bottom line ..didnt like it
Posted by 4918579824339987512 on Nov 24, 2014
It has nothing to do with this specific product cause i believe any other tyrptophan product will make me feel dizzy heavy and severly depressed. I myself have some liver inflamation so it might be that tryptophan clearance in my case is defected and thus i feel bad with it. But i read at the internet that it may have many adverse effects on healthy people too and i'm not sure it is a good idea to use trypthopah products from what i read, no matter who is its vendor. Use the internet to learn more about tryptophan supplements to be aware of its possible side effects.