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$24.99
sw ul l-tryptophan tryptopure
It's back, and better than ever! L-Tryptophan is a precursor to serotonin, and it's powerfully effective when used properly. By supporting serotonin levels, L-tryptophan not only helps us fall asleep and stay asleep, but it also promotes mental health and provides dietary support against nervousness and tension.* TryptoPure L-Tryptophan from Swanson Ultra is the purest pharmaceutical-grade tryptophan on the world market. It's produced through a fermentation process from a vegetarian source, using the most precise standards for safety and quality assurance. details
$18.78
doctors l-tryptophan 500mg 90 veg
L-Tryptophan with TryptoPure by Doctor's Best can help improve sleep and enhance mood. L-tryptophan is altered by enzymes to first form the intermediate amino acid 5-HTP and then serotonin. It is also the metabolic precursor to melatonin and to the B vitamin niacin. details
$23.13
now dbl strngth l-tryptophan
L-Tryptophan helps support relaxation, sleep, positive mood and immune function. L-Tryptophan is important in human nutrition for the synthesis of melatonin and serotonin. As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. NOW Double Strength L-Tryptophan is pharmaceutically pure
- every lot is tested to be free of Peak E and microbial contamination. Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. details
$14.29
jarrow l-tryptophan peptide 60
L-tryptophan is an essential amino acid and must be obtained from food or supplements. It is metabolized to serotonin and melatonin, which are important for healthy, restful sleep. Jarrow Formulas L-Tryptophan Peptide uses PepForm(R) technology to deliver 500 mg l-tryptophan per serving. Contains no wheat, gluten, soybeans, egg, fish shellfish or peanuts tree nuts. Please see package warnings for important information. details
$15.75
source naturals l-tryptophan 500
Get 1.5 grams of L-tryptophan with each serving of Source Naturals L-Tryptophan dietary supplement. It is an essential amino acid that supports mood, relaxation and healthy sleep. L-tryptophan plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. It also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity. details
$29.95
lidtke l-tryptophan cmplt
L-Tryptophan Complete from LIDTKE is a unique formulation designed to maximize and maintain healthy levels of serotonin in the brain. Once in your cells, L-Tryptophan can follow many pathways. The challenge is to encourage L-Tryptophan to follow the one branch that leads to serotonin
- - and to discourage L-Tryptophan from producing undesirable kynurenine or quinolinic-acid compounds. Lidtke has studied these pathways and has identified cofactors and coenzymes that uniquely help produce and sustain healthy serotonin levels, for a brighter outlook and a more productive life. Vegetarian and non-GMO. details
$35.95
lidtke l-tryptophan 500mg
L-Tryptophan, USP from Lidtke Technologies is designed to promote healthy relaxation, sleep and a calm mood. L-Tryptophan also plays an important role in nervous system function and appetite. Each serving delivers 500 mg of l-tryptophan. No added gluten, yeast, wheat, corn, soy, dairy, eggs, tree nuts, peanuts, fish, shellfish, salt, sugar, artificial colors, artificial flavors or artificial preservatives. Non-GMO; vegan. details
$19.27
now foods l-tryptophan powder 2 oz
An essential amino acid, L-tryptophan is important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating mood and stress response. L-Tryptophan helps support relaxation, sleep, positive mood and immune function. As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. NOW L-Tryptophan Powder is pharmaceutically pure--every lot is tested to be free of Peak E and microbial contamination. details
$52.45
lidtke l-tryptophan cmplt
L-Tryptophan Complete(TM) from Lidtke Technologies features a blend of ingredients that help support sleep, mood and appetite control. This formula delivers l-tryptophan, vitamin C, niacin, vitamin B-6, folic acid, curcumin and magnesium. Each serving delivers 350 mg of l-tryptophan. No added gluten, yeast, wheat, corn, rice, soy, dairy, eggs, peanuts, fish, shellfish, sugar, artificial colors, artificial flavors or preservatives. details
$14.69
sn l-tryptophan wvit b-6 1000mg
A precursor for the synthesis of melatonin and serotonin, Source Naturals L-Tryptophan may help support a healthy mood, relaxation and restful sleep. L-Tryptophan can also be converted to niacin, an important B vitamin. Contains no yeast, dairy, egg, gluten, corn, soy, wheat, sugar, salt, starch, preservatives, or artificial color, flavor or fragrance. details
$11.49
sw l-tryptophan 500 mg 60
Looking for effective sleep support? Swanson Premium offers500 mg of L-Tryptophan per capsule to help support healthy serotonin levels and provide restful sleep.* L-Tryptophan, an essential amino acid, has to be obtained in the diet or in supplement form. Extensive lot tests indicate no Peak-E in this product. details
$20.95
lidtke l-tryptophan mpl van 100mg
With LIDTKE L-Tryptophan Chewable, there really is no better or tastier way to promote relaxation. In a delicious maple vanilla flavor in a chewable tablet, this form of L-Tryptophan provides the essential amino acid that plays a vast number of roles
- - critical roles in enzymes and other types of proteins throughout your body. In addition, L-Tryptophan is a natural building block of serotonin, the neurotransmitter that plays an important role in appetite, mood, normal sleep patterns and nervous system health. details
$53.80
pure encap l-tryptophan 500mg 90vg
Pure Encapsulations l-Tryptophan is an amino acid used to help enhance serotonin synthesis for emotional well-being and sleep, including sleep quality, onset and duration. It also helps support relaxation. Each serving delivers 500 mg of Tryptopure(TM) l-tryptophan as well as 5 mg each of niacin and pyridoxal 5 phosphate (activated vitamin B-6). details
$24.35
now l-tryptophan 500 mg 120 veg
NOW L-Tryptophan is pharmaceutically pure--every lot is tested to be free of Peak E and microbial contamination. L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating mood and stress response. L-Tryptophan helps support relaxation, sleep, positive mood and immune function. As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. This product contains no sugar, salt, starch, yeast, wheat, gluten, corn, soy, milk, egg or preservatives. details
$33.00
l-tryptophan 500 mg 90
Serotonin is a neurotransmitter in the brain associated with positive moods and restful sleep.1-4 To produce and maintain optimum serotonin levels, your body requires tryptophan, an essential amino acid the body cant produce.1 In the body, tryptophan has been shown. details
$32.00
optimized tryptophan plus 90
Serotonin is a neurotransmitter in the brain associated with positive moods and restful sleep.1-4 To produce and maintain optimum serotonin levels, your body requires tryptophan, an essential amino acid the body cant produce.1 In the body, tryptophan has been shown. details
$34.50
metabolic l-tryptophan 500mg
Tryptophan from Metabolic Maintenance features 500 mg of trademarked TryptoPure plus 10 mg of vitamin B-6. This essential amino acid acts as a precursor to 5-HTP, serotonin and melatonin. Tryptophan assists with normal sleep patterns, appetite and mood. Use with care when combining with SSRIs or other substances that increase serotonin levels. 60 vegetarian capsules. details
$30.45
source l-tryptophan 500 mg 120
L-tryptophan is an essential amino acid that helps support relaxation and restful sleep, as well as immune health. It plays a part in the synthesis of both melatonin and serotonin, hormones involved in mood and stress response. L-Tryptophan from Source Naturals delivers 500 mg per tablet. Suitable for vegetarians. Hypoallergenic; no yeast, dairy, egg, gluten, corn, soy or wheat. details
$13.50
california natural l-tryptophan 30
To promote a healthy, restful sleep pattern, try L-Tryptophan from California Natural. This is an allergen-free dietary supplement that is made in the USA. L-Tryptophan 500 mg is USP pharmaceutical grade, ensuring top-quality supplementation to help you maintain healthy sleep patterns. details
$28.34
sn l-tryptophan wvit b-6 1000mg
Source Naturals L-Tryptophan features the precursor for the synthesis of melatonin and serotonin, which help the body regulate mood and stress response. Also helps support restful sleep, relaxation and a positive outlook. Vitamin B-6 is needed by the body to convert l-tryptophan into serotonin. Contains no yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, or artificial color, flavor or fragrance. details
$15.75
sn l-tryptophan w coenzyme b6
Source Naturals L-Tryptophan with Coenzyme B-6 supports relaxation, restful sleep, and positive mood. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response and sleep wake cycles. L-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity. If needed, it also converts 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. Coenzyme B-6 is required to convert tryptophan to serotonin. details
$30.45
sn l-tryptophan wcoenzyme b6
Source Naturals L-Tryptophan with Coenzyme B-6 supports relaxation, restful sleep and positive mood. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response and sleep wake cycles. L-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity. If needed, it also converts 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. Coenzyme B-6 is required to convert tryptophan to serotonin. details
$15.75
sn l-tryptophan 500 mg 60
The essential amino acid L-tryptophan helps support relaxation, restful sleep, and feeling better. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. Source Naturals L-TRYPTOPHAN is extremely pure and is regularly tested to ensure the highest standards of quality. Hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor or fragrance. details
$13.39
now foods l-tryptophan 500 mg 60
L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating sleep, positive mood and immune function. As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. NOW L-Tryptophan is pharmaceutically pure--every lot is tested to be free of Peak E and microbial contamination. Contains no sugar, salt, yeast, wheat, gluten, soy, milk, egg, shellfish or preservatives. details
$27.99
source naturals l-tryptophan
The essential amino acid l-tryptophan helps support relaxation, restful sleep, and positive mood. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response and sleep wake cycles. l-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that promote immunity. If needed, l-tryptophan converts 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. Source Naturals l-Tryptophan is extremely pure and is regularly tested to ensure the highest standards o [...]. details
$23.29
source naturals l-tryptophan 90
Source Naturals L-Tryptophan promotes healthy mood, relaxation and sleep. This essential amino acid plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response and sleep cycles. L-Tryptophan also supports immune system function and can convert to niacin in the body to support circulation, a healthy nervous system, metabolism and digestion. Source Naturals L-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality. Contains no yeast, diary, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor or fragrance. Hypo [...]. details
$30.45
source naturals l-tryptophan 500
Source Naturals L-Tryptophan promotes positive mood, relaxation and sleep. This essential amino acid plays a part in the synthesis of melatonin and serotonin, the hormones involved with mood, stress response and sleep wake cycles. L-Tryptophan also supports the body's immune system. Hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, salt, starch, preservatives or artificial color, flavor or fragrance. details
$22.95
lidtke l-tryptophan 500mg
With LIDTKE L-Tryptophan, USP, there really is no better, no more-natural way to feel relaxed. Tryptophan is a natural building block of serotonin, the neurotransmitter that plays an important role in appetite, mood, normal sleep patterns and nervous-system function. Serotonin has become a goldmine for the makers of patent ingredients, but there are two vastly different approaches to making your body think it has more serotonin: one is to mimic it, the other is to make it. This product contains no added gluten, yeast, wheat, soy, milk, dairy products, eggs, nuts, tree nuts, peanuts, fish, shellfish, sugar, preservatives, artificial color or artificial [...]. details
$16.30
db 5-htp enh wvit b6 amp c
Doctor's Best(R) 5-HTP Enhanced with Vitamins B6 and C is enhanced with vitamins B6 and C to help maintain mental and emotional well-being. 5-HTP (or 5-hydroxy L-tryptophan) is a naturally occurring metabolite of the amino acid tryptophan. It is converted in the brain to serotonin, a neurotransmitter substance found at the synapses between neurons. 5-HTP helps maintain healthy sleep patterns and support overall mental health and wellness. details
$11.99
horses prefer tryptophan plus gel
Horses Prefer Tryptophan Plus Gel is formulated with nutrients that are essential to energy production and performance in horses. It also works to keep your horse hydrated and calm, making it ideal for competitions and suitable for other stressful situations, such as a visit to the veterinarian. The gel can be fed directly to your horse and features an appetizing apple flavor. Horses Prefer Trytophan Plus Gel comes in a 32ml syringe-style dispenser that makes administration simple. This supplement is manufactured in the USA to ensure that it's safe for your horse. details