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Tryptophan  / Source Naturals  / Gluten Free 
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L-Tryptophan

L-tryptophan is an essential amino acid that is found naturally in many plant and animal proteins. This protein building block is considered “essential” because your body cannot make it on its own, rather it must rely on dietary sources (food) or dietary supplements. So what does L-tryptophan do and how does it work? L-tryptophan supports healthy serotonin levels, which in turn promote healthy sleep patterns. It also plays important roles in the development and functioning of many organs in your body. It’s converted in your body into 5-HTP and then to serotonin, a natural hormone associated with healthy, restful sleep.

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L-Tryptophan
In Stock , quick look 
Save 47%
Retail $19.98
Swanson $10.49
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L-Tryptophan
In Stock , quick look 
Save 44%
Retail $38.50
Swanson $21.56
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L-Tryptophan
Usually Ships Within 2-4 Business Days
Usually Ships Within 2-3 Business Days.
, quick look 
Save 47%
Retail $38.98
Swanson $20.49
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L-Tryptophan
Usually Ships Within 2-4 Business Days
Usually Ships Within 2-3 Business Days.
, quick look 
Save 47%
Retail $28.98
Swanson $15.49
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Products 1-4 of 4