Best Seller
5-HTP Elite, 50 mg 120 tablets, Carlson Labs

5-HTP Elite, 50 mg 120 tablets, Carlson Labs

Healthy Mood 5-HTP Elite 5-HTP supports healthy functioning of the blood vessels in the head. A healthy vascular network may help hypersensitivity to light, noise, and smells. By supporting serotonin productions, Carlson Healthy Mood 5-HTP Elite may... more

$26.17

go to store
5-HTP 200 mg, Serene Science, 60 Capsules, Source Naturals

5-HTP 200 mg, Serene Science, 60 Capsules, Source Naturals

Source Naturals Serene Science® 5-HTP Dietary Supplement. High Potency. Balanced Mood. 5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid tryptophan to serotonin, a brain chemical associated with... more

$16.82

go to store
Best Seller
"5-HTP Enhanced with Vitamin B6 & C, 120 Veggie Caps, Doctor's Best"

"5-HTP Enhanced with Vitamin B6 & C, 120 Veggie Caps, Doctor's Best"

"5-HTP (5-hydroxy L-tryptophan) is a naturally occurring metabolite of the amino acid tryptophan. 5HTP is converted in the brain to serotonin, a neurotransmitter substance found at the junctions (synapses) between neurons. Doctor's Best 5HTP is... more

$18.48

go to store
5-HTP Elite, 50 mg 60 tablets, Carlson Labs

5-HTP Elite, 50 mg 60 tablets, Carlson Labs

Healthy Mood 5-HTP Elite 5-HTP supports healthy functioning of the blood vessels in the head. A healthy vascular network may help hypersensitivity to light, noise, and smells. By supporting serotonin productions, Carlson Healthy Mood 5-HTP Elite may... more

$16.12

go to store
5-HTP 200 mg, Serene Science, 30 Capsules, Source Naturals

5-HTP 200 mg, Serene Science, 30 Capsules, Source Naturals

Source Naturals Serene Science® 5-HTP Dietary Supplement. High Potency. Balanced Mood. 5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid tryptophan to serotonin, a brain chemical associated with pos more

$12.59

go to store
5-HTP, 60 Vegetarian Capsules, FutureBiotics

5-HTP, 60 Vegetarian Capsules, FutureBiotics

FutureBiotics 5 HTP Extracted from Griffonia seeds. Easy-to-swallow vegetarian capsules. 100% vegetarian. 5HTP (5-Hydroxytryptophan) is an amino acid that is a precursor substance to serotonin, a vital neurotransmitter in the body. Futurebiotics® 5-HTP... more

$14.24

go to store
5-HTP 200 mg Sustained Release, 90 Tablets, NOW Foods

5-HTP 200 mg Sustained Release, 90 Tablets, NOW Foods

NOW 5-HTP 200 mg Sustained Release Tabs Dietary Supplement. Neurotransmitter Support. Supports a Positive Mood. Sustained Release - Amino SR™. 5-HTP is a naturally occurring amino acid that's a precursor for the neurotransmitter serotonin, which... more

$23.49

go to store
"5-HTP Elite, 50 mg 60 tablets, Carlson Labs"

"5-HTP Elite, 50 mg 60 tablets, Carlson Labs"

"Healthy Mood 5-HTP Elite 5-HTP supports healthy functioning of the blood vessels in the head. A healthy vascular network may help hypersensitivity to light, noise, and smells. By supporting serotonin productions, Carlson Healthy Mood 5-HTP Elite may... more

$16.12

go to store
"5 HTP 100mg Time Release, 45 Tablets, Natrol"

"5 HTP 100mg Time Release, 45 Tablets, Natrol"

"Natrol 5-HTP Time Release Promotes Positive Mood. Helps Control Appetite. Natrol 5-HTP TR 100mg Time Release is a drug-free plant-derived source of an amino acid that naturally increases the body's level of serotonin, the chemical messenger that... more

$13.42

go to store
5-HTP 200 mg, Serene Science, Value Size, 120 Capsules, Source Naturals

5-HTP 200 mg, Serene Science, Value Size, 120 Capsules, Source Naturals

Source Naturals Serene Science® 5-HTP Dietary Supplement. High Potency. Balanced Mood. 5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid tryptophan to serotonin, a brain chemical associated with... more

$44.79

go to store
"5-HTP 200 mg, Serene Science, 30 Capsules, Source Naturals"

"5-HTP 200 mg, Serene Science, 30 Capsules, Source Naturals"

"Source Naturals Serene Science® 5-HTP Dietary Supplement. High Potency. Balanced Mood. 5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid tryptophan to serotonin, a brain chemical associated with... more

$12.59

go to store
5-HTP Enhanced with Vitamin B6 & C, 120 Veggie Caps, Doctor's Best

5-HTP Enhanced with Vitamin B6 & C, 120 Veggie Caps, Doctor's Best

5-HTP (5-hydroxy L-tryptophan) is a naturally occurring metabolite of the amino acid tryptophan. 5HTP is converted in the brain to serotonin, a neurotransmitter substance found at the junctions (synapses) between neurons. Doctor's Best 5HTP is... more

$18.48

go to store
5-HTP 200 mg, Serene Science, 30 Capsules, Source Naturals

5-HTP 200 mg, Serene Science, 30 Capsules, Source Naturals

Source Naturals Serene Science® 5-HTP Dietary Supplement. High Potency. Balanced Mood. 5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid tryptophan to serotonin, a brain chemical associated with... more

$12.59

go to store
Best 5-HTP 100 mg, Value Size, 180 Vegetarian Capsules, Doctor's Best

Best 5-HTP 100 mg, Value Size, 180 Vegetarian Capsules, Doctor's Best

5-HTP (5-hydroxy L-tryptophan) is a naturally occuring metabolite of the amino acid tryptophan. 5HTP is converted in the brain to serotonin, a neurotransmitter substance found at the junctions (synapses) between neurons. Doctor's Best 5-HTP is... more

$20.72

go to store
"5-HTP 200 mg, Serene Science, Value Size, 120 Capsules, Source Naturals"

"5-HTP 200 mg, Serene Science, Value Size, 120 Capsules, Source Naturals"

"Source Naturals Serene Science® 5-HTP Dietary Supplement. High Potency. Balanced Mood. 5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid tryptophan to serotonin, a brain chemical associated with... more

$44.79

go to store
"5-HTP, 60 Vegetarian Capsules, FutureBiotics"

"5-HTP, 60 Vegetarian Capsules, FutureBiotics"

"FutureBiotics 5 HTP Extracted from Griffonia seeds. Easy-to-swallow vegetarian capsules. 100% vegetarian. 5HTP (5-Hydroxytryptophan) is an amino acid that is a precursor substance to serotonin, a vital neurotransmitter in the body. Futurebiotics®... more

$14.24

go to store
"5-HTP 200 mg, Serene Science, 60 Capsules, Source Naturals"

"5-HTP 200 mg, Serene Science, 60 Capsules, Source Naturals"

"Source Naturals Serene Science® 5-HTP Dietary Supplement. High Potency. Balanced Mood. 5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid tryptophan to serotonin, a brain chemical associated with... more

$16.82

go to store
5-HTP 100 mg, Value Size, 180 Vegetarian Capsules, Doctor's Best

5-HTP 100 mg, Value Size, 180 Vegetarian Capsules, Doctor's Best

5-HTP (5-hydroxy L-tryptophan) is a naturally occuring metabolite of the amino acid tryptophan. 5HTP is converted in the brain to serotonin, a neurotransmitter substance found at the junctions (synapses) between neurons. Doctor's Best 5-HTP is... more

$20.72

go to store
5-HTP Enhanced with Vitamin B6 & C, 120 Veggie Caps, Doctor's Best

5-HTP Enhanced with Vitamin B6 & C, 120 Veggie Caps, Doctor's Best

5-HTP (5-hydroxy L-tryptophan) is a naturally occurring metabolite of the amino acid tryptophan. 5HTP is converted in the brain to serotonin, a neurotransmitter substance found at the junctions (synapses) between neurons. Doctor's Best 5HTP is... more

$18.48

go to store
"5-HTP, 60 Vegetarian Capsules, FutureBiotics"

"5-HTP, 60 Vegetarian Capsules, FutureBiotics"

"FutureBiotics 5 HTP Extracted from Griffonia seeds. Easy-to-swallow vegetarian capsules. 100% vegetarian. 5HTP (5-Hydroxytryptophan) is an amino acid that is a precursor substance to serotonin, a vital neurotransmitter in the body. Futurebiotics®... more

$14.24

go to store
5-HTP 100 mg Fast-Acting Lozenges, 90 Chewable Tablets, NOW Foods

5-HTP 100 mg Fast-Acting Lozenges, 90 Chewable Tablets, NOW Foods

NOW Foods Chewable 5-HTP 100 mg Dietary Supplement. Neurotransmitter Support. Supports Positive Mood. Natural Citrus Flavor! Vegetarian Formula. 5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the... more

$16.79

go to store
5-HTP Elite, 50 mg 60 tablets, Carlson Labs

5-HTP Elite, 50 mg 60 tablets, Carlson Labs

Healthy Mood 5-HTP Elite 5-HTP supports healthy functioning of the blood vessels in the head. A healthy vascular network may help hypersensitivity to light, noise, and smells. By supporting serotonin productions, Carlson Healthy Mood 5-HTP Elite may... more

$16.12

go to store
"5 HTP 100mg Time Release, 45 Tablets, Natrol"

"5 HTP 100mg Time Release, 45 Tablets, Natrol"

"Natrol 5-HTP Time Release Promotes Positive Mood. Helps Control Appetite. Natrol 5-HTP TR 100mg Time Release is a drug-free plant-derived source of an amino acid that naturally increases the body's level of serotonin, the chemical messenger that... more

$13.42

go to store
"5-HTP 50 mg, 180 Capsules, NOW Foods"

"5-HTP 50 mg, 180 Capsules, NOW Foods"

"NOW Foods 5-HTP 50 mg Neurotransmitter Support. Natural Source. Supports Positive Mood. 5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the bean of an African plant (Griffonia simpicifolia).... more

$20.39

go to store
5-HTP 200 mg Sustained Release, 90 Tablets, NOW Foods

5-HTP 200 mg Sustained Release, 90 Tablets, NOW Foods

NOW 5-HTP 200 mg Sustained Release Tabs Dietary Supplement. Neurotransmitter Support. Supports a Positive Mood. Sustained Release - Amino SR™. 5-HTP is a naturally occurring amino acid that's a precursor for the neurotransmitter serotonin, which... more

$23.49

go to store
5 HTP 100mg Time Release, 45 Tablets, Natrol

5 HTP 100mg Time Release, 45 Tablets, Natrol

Natrol 5-HTP Time Release Promotes Positive Mood. Helps Control Appetite. Natrol 5-HTP TR 100mg Time Release is a drug-free plant-derived source of an amino acid that naturally increases the body's level of serotonin, the chemical messenger that... more

$13.42

go to store
"5-HTP 200 mg, Serene Science, 30 Capsules, Source Naturals"

"5-HTP 200 mg, Serene Science, 30 Capsules, Source Naturals"

"Source Naturals Serene Science® 5-HTP Dietary Supplement. High Potency. Balanced Mood. 5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid tryptophan to serotonin, a brain chemical associated with... more

$12.59

go to store
5-HTP 200 mg, Serene Science, 60 Capsules, Source Naturals

5-HTP 200 mg, Serene Science, 60 Capsules, Source Naturals

Source Naturals Serene Science® 5-HTP Dietary Supplement. High Potency. Balanced Mood. 5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid tryptophan to serotonin, a brain chemical associated with pos more

$23.09

go to store
"5-HTP 200 mg Sustained Release, 90 Tablets, NOW Foods"

"5-HTP 200 mg Sustained Release, 90 Tablets, NOW Foods"

"NOW 5-HTP 200 mg Sustained Release Tabs Dietary Supplement. Neurotransmitter Support. Supports a Positive Mood. Sustained Release - Amino SR™. 5-HTP is a naturally occurring amino acid that's a precursor for the neurotransmitter serotonin, which... more

$23.49

go to store
5-HTP 100 mg Fast-Acting Lozenges, 90 Chewable Tablets, NOW Foods

5-HTP 100 mg Fast-Acting Lozenges, 90 Chewable Tablets, NOW Foods

NOW Foods Chewable 5-HTP 100 mg Dietary Supplement. Neurotransmitter Support. Supports Positive Mood. Natural Citrus Flavor! Vegetarian Formula. 5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the... more

$16.79

go to store
Jarrow Formulas 5-HTP 100 mg 60 Capsules

Jarrow Formulas 5-HTP 100 mg 60 Capsules

Jarrow Formulas 5-HTP 100 mg 60 Vegetarian caps Jarrow Formulas 5-HTP (5-Hydroxytryptophan) is an extract of Griffonia simplicifolia seeds from coastal West Africa. Purity is assured by HPLC. 5-HTP is the direct metabolic precursor of serotonin. more

$15.99

go to store
5-HTP 200 mg, Serene Science, Value Size, 120 Capsules, Source Naturals

5-HTP 200 mg, Serene Science, Value Size, 120 Capsules, Source Naturals

Source Naturals Serene Science® 5-HTP Dietary Supplement. High Potency. Balanced Mood. 5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid tryptophan to serotonin, a brain chemical associated with pos more

$44.79

go to store
"5-HTP Elite, 50 mg 60 tablets, Carlson Labs"

"5-HTP Elite, 50 mg 60 tablets, Carlson Labs"

"Healthy Mood 5-HTP Elite 5-HTP supports healthy functioning of the blood vessels in the head. A healthy vascular network may help hypersensitivity to light, noise, and smells. By supporting serotonin productions, Carlson Healthy Mood 5-HTP Elite may... more

$16.12

go to store
"5-HTP 100 mg Fast-Acting Lozenges, 90 Chewable Tablets, NOW Foods"

"5-HTP 100 mg Fast-Acting Lozenges, 90 Chewable Tablets, NOW Foods"

"NOW Foods Chewable 5-HTP 100 mg Dietary Supplement. Neurotransmitter Support. Supports Positive Mood. Natural Citrus Flavor! Vegetarian Formula. 5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from... more

$16.79

go to store
5-HTP Elite, 50 mg 120 tablets, Carlson Labs

5-HTP Elite, 50 mg 120 tablets, Carlson Labs

Healthy Mood 5-HTP Elite 5-HTP supports healthy functioning of the blood vessels in the head. A healthy vascular network may help hypersensitivity to light, noise, and smells. By supporting serotonin productions, Carlson Healthy Mood 5-HTP Elite may... more

$26.17

go to store
"5-HTP Elite, 50 mg 120 tablets, Carlson Labs"

"5-HTP Elite, 50 mg 120 tablets, Carlson Labs"

"Healthy Mood 5-HTP Elite 5-HTP supports healthy functioning of the blood vessels in the head. A healthy vascular network may help hypersensitivity to light, noise, and smells. By supporting serotonin productions, Carlson Healthy Mood 5-HTP Elite may... more

$26.17

go to store
NOW Foods, 5-HTP 50 mg, 180 Capsules

NOW Foods, 5-HTP 50 mg, 180 Capsules

NOW Foods 5-HTP 50 mg Neurotransmitter Support. Natural Source. Supports Positive Mood. 5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the bean of an African plant (Griffonia simpicifolia).... more

$20.39

go to store
5-HTP 50 mg, 180 Capsules, NOW Foods

5-HTP 50 mg, 180 Capsules, NOW Foods

NOW Foods 5-HTP 50 mg Neurotransmitter Support. Natural Source. Supports Positive Mood. 5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the bean of an African plant (Griffonia simpicifolia).... more

$20.39

go to store
"5-HTP Elite, 50 mg 120 tablets, Carlson Labs"

"5-HTP Elite, 50 mg 120 tablets, Carlson Labs"

"Healthy Mood 5-HTP Elite 5-HTP supports healthy functioning of the blood vessels in the head. A healthy vascular network may help hypersensitivity to light, noise, and smells. By supporting serotonin productions, Carlson Healthy Mood 5-HTP Elite may... more

$26.17

go to store
5-HTP 200mg (120 Capsules)

5-HTP 200mg (120 Capsules)

5-HTP is a precursor to serotonin, which is a neurotransmitter involved in sending messages through the nervous system. 5-HTP is extracted from an African plant called Griffonia Simplicifolia and it is the intermediate between the amino acid... more

$14.95

FREE shipping

go to store

More information about Vitamins & Nutrition

Best prices on 5 htp serotonin in Vitamins & Nutrition online. Visit Bizrate to find the best deals on top brands. Read reviews on Health & Beauty Supplies merchants and buy with confidence.