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5-HTP & L-Tryptophan

5HTP is an essential amino acid that is critical for the formation of many life-giving bio-molecules, including structural proteins, enzymes, and the neurotransmitters, serotonin and melatonin.

5-HTP is also the least abundant amino acid in our diet. Because of this, 5-Htp is widely used to correct mental and bodily disorders such as Depression, Obesity, Alcoholism, PMS, Anxiety, Panic, Fibromyalgia, Insomnia, Migraines, Aggressiveness, Weight Loss, Food Cravings, Etc., all of which can be caused by serotonin deficiency.

Try Our Now Foods 5-HTP premium quality at a great price.

Unlike 5-HTP L-Tryptophan has many other uses in the body. It can be converted to niacin. It is a required precursor to the kynurenines, a family of biochemicals that help regulate the immune system. As an essential amino acid, L-Tryptophan is required for your body to work properly.

Even though L-Tryptophan and 5HTP are metabolized to serotonin along the same biochemical pathway, individual differences in metabolism can cause significant differences in effectiveness.

L-Tryptophan is a natural amino acid that is the precursor to serotonin and melatonin, which is a neurohormone that affects the body’s ability to sleep, relax and feel good. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. L-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity. If needed, L-tryptophan coverts 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.

American Nutrition is the largest retailer of L-Tryptophan products on the Internet. Due to the large volumes that we sell we have the lowest prices and the freshest product in the USA.

Try our NutraceuticsRX Signature™ brand 500mg 120 Caps @ $24.95 ea for exceptional quality and value.

Best Selling 5-HTP & L-Tryptophan

Now Foods 5-HTP 120 Capsules100 MG
$35.99 $19.79 Our Price
NF0106S Quantity   
Now Foods - 5-HTP 100 mg. - 60 Vegetarian Capsules
$19.99 $8.99 Our Price
NF0105 Quantity   
Now Foods 5-HTP 200 mg 60 Vcaps
$33.99 $18.69 Our Price
NF0108 Quantity   
Now Foods 5-HTP 50 mg 180 Capsules
$33.99 $18.69 Our Price
NF0101 Quantity   
Now Foods 5-HTP 50 mg 30 Caps
$7.99 $4.39 Our Price
NF0097 Quantity   
Now Foods 5-HTP 50 mg 90 Caps
$17.99 $9.89 Our Price
NF0099S Quantity   
NutraceuticsRx L-Tryptophan Bulk Powder - 100g
$99.90 $49.95 Our Price

TOP SELLER! Independently Tested For Purity! Peak E Free.


NRx_L-Tryptophan_500mg_120caps.jpg NutraceuticsRx L-Tryptophan USP 500mg 120 Caps
$49.90 $24.95 Our Price
TOP SELLER! Independently Tested For Purity! Peak E Free.

American Nutrition L-5-HTP 100mg 60 Capsules
$23.35 $15.02 Our Price
AN6642 Quantity   
CN01.jpg Colorado Nutrition 5-HTP 100mg 120 Vcaps
$39.95 $19.95 Our Price

Craig Nutraceuticals L-Tryptophan 500 mg 180 caps
$89.99 $72.95 Our Price

Craig Nutraceuticals is premium grade L-Tryptophan

Craig Nutraceuticals L-Tryptophan 500mg 120 caps
$69.95 $56.95 Our Price
Craig Nutraceuticals is premium grade L-Tryptophan

Craig Nutraceuticals L-Tryptophan 500mg 60 caps
$49.95 $30.95 Our Price

Craig Nutraceuticals is premium grade L-Tryptophan

Doctors Best L Tryptophan Doctors's Best L-Tryptophan 90 Vcaps
$44.95 $19.95 Our Price
DRBL-Tryp Quantity   
HiTech Sleep-Rx 30 Tablets
$19.95 $12.25 Our Price
Problems getting a good nights sleep. SleepRx Works!
Hyland's Calms Forte 50 Tabs
$7.99 $5.95 Our Price
HYCalmsForte Quantity   
Lidtke LTryptophan 500mg 120 Caps
$69.95 $59.95 Our Price
500 mg--Guaranteed World’s Purest L‑Tryptophan! Promotes sleep and relaxation, improves mood, and reduces cravings for carbohydrates by boosting Serotonin levels.
Source Naturals 5-HTP 100mg 120 Caps
$64.98 $33.13 Our Price
SN1696s Quantity   
Source Naturals 5-HTP 120 caps 50 mg
$34.50 $17.59 Our Price
SN1702 Quantity   
Source Naturals 5-HTP 30 caps 100 mg
$17.50 $8.92 Our Price
SN1694 Quantity   
5-HTP & L-Tryptophan Pages:
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