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Customer Reviews

4.5 out of 5 · 358 reviews

Reviews are a representative sample of real customer reviews aggregated from public data and matched to this product; written reviews are representative samples, not verified individual purchases.

4.5

out of 5

In this case, used as a source of serotonin - deficiency of which was causing constipation; but, yes, it does also promote sleep

I am not using it for relaxation - in fact I slightly dislike its soporific effect, and hope this will diminish with use. I switched from 5-HTP to L-Tryptophan, because one should not take 5-HTP for more than 8 (maybe 12) weeks maximum, as doing so will deplete dopamine (after which the 5-HTP is also no longer effective). I was using 5-HTP as a natural prokinetic, though I know it is touted as an aid to sleep/relaxation, as is L-Tryptophan. My problem was lack of intestinal peristalsis and ensuing constipation, both in relation to SIBO-C. 100mg of 5-HTP each night provided me with peristalsis/normal bowel movements, because one's body makes serotonin of 5-HTP, and 85-90% of the body's serotonin is used in the gut for peristalsis. Tryptophan can also be converted, by the body, into serotonin (though it can also be made into other things, such as niacin). My hope was that 1500mg L-Tryptophan, nightly, might be an adequate replacement for the 500mg 5-HTP, relative to maintaining intestinal peristalsis & correcting constipation due to lack of peristalsis. 30 days into the experiment, it does seem to be working.

Chloe P.·August 6, 2017·51 found this helpful

Best supplement ever for sleeping!

I have had some sleep problems for a few years, perhaps due to fibromyalgia or medications. I wanted a natural product to help me sleep; I've never wanted to try sleeping pills, Rx or not. I tried Valerian-- did not do the trick for me. I couldn't believe how well this L-Tryptophan product works. It's a blessing. Helps me get to sleep faster and stay asleep, yet I'm alert enough if my son needs me during the night & I wake up to strange noises in the house, etc. I really recommend this!

Liam F.·May 17, 2012·30 found this helpful

This is my second order...

This is excellent quality L-tryptophan. If you take this with with a b-complex or b-1 it will calm you and help you sleep. If you take it alone it is also calming without making you feel drowsy. This is my go-to de-stress and sleepy-time supplement. A++

Kevin H.·September 9, 2011·29 found this helpful

Worth A Try

If you're experiencing severe pms, insomnia, hot flashes, intense cravings for sugar then these are worth a try. So far I've been sleeping better. I have less anxiety and my appetite feels more controlled. Follow the directions and take on an empty stomach.

Dean G.·July 30, 2017·23 found this helpful

Great for those with low serotonin

Can't sleep without it. I consider this a necessity for those of us who have defective MTHFR methylation genes. Does not cause high blood pressure like 5-HTP can.

Mason R.·July 18, 2017·19 found this helpful

Works great... for my wife

I'm a repeat buyer of this stuff - I take it every night, as does my wife. I don't think it does much for me, perhaps a bit of relaxation benefit. But it seems to work wonders for my wife, she swears by it. I guess it's a case of "everybody's different" - but give it a roll, I'd say you've got a 50% chance of getting some benefit anyway.

Tara A.·July 11, 2012·15 found this helpful

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