L-Tryptophan (500mg) 180ct by Pure Encapsulations

Pure Encapsulations


$ 93.00
$ 93.00

What Is It?

The essential amino acid l-tryptophan is a serotonin
precursor. It promotes serotonin synthesis to support
emotional health and restful sleep.*

Uses For l-Tryptophan

Positive mood: Research indicates that l-tryptophan
supplementation may support emotional well-being. In
a double blind placebo-controlled study, l-tryptophan
supported healthy emotional processing and promoted
positive outlook in women. In a separate study, it
supported healthy mood and lessened irritability during
the menstrual cycle. Niacinamide and vitamin B6 provide
enhanced support as important cofactors involved in the
metabolism of l-tryptophan.*

Restful sleep and relaxation: Research indicates that
l-tryptophan supports healthy sleep quality, onset and
duration. Additionally, studies suggest that tryptophan
may promote relaxation and help control occasional

What Is The Source?

l-tryptophan is derived from corn dextrose fermentation.
It is tested for contaminants, including EBT (peak E)
and endotoxin. Niacinamide and pyridoxal 5'phosphate
(activated B6) are synthetic. Ascorbyl palmitate is derived
from corn dextrose fermentation and palm oil. Hypoallergenic
plant fiber is derived from pine cellulose.

These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose, treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.

one vegetable capsule containsniacinamide...................................................................................... 5 mg.pyridoxal 5'phosphate (activated B6)................................................. 5 mg.Tryptopure l-tryptophan.............................................................. 500 mg.
Pure Encapsulations recommends 2-6 capsules daily, in divided doses, between meals.
Are There Any Potential Side Effects Or Precautions?Not to be taken by pregnant or lactating women. l-Tryptophan can cause gastrointestinal (GI) side effects, including heartburn, belching and flatulence, nausea, vomiting or diarrhea. It has also been related to headache, dry mouth, visual blurring, ataxia, drowsiness and anorexia. Consult your physician for more information.Are There Any Potential Drug Interactions?Tryptophan is contra-indicated with serotonergic medications, including SSRI and MAO inhibitor medications. It is also contra-indicated with sedative and antipsychotic medications. Consult your physician for more information.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.


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