Other products by NOW
Item #: 0106
Reg. Price: $35.99
Our Price: $25.59

Description  more details

5-HTP 100 mg - 120 Vcaps
  • Neurotransmitter Support
  • Natural Source
  • Supports Positive Mood
  • Vegetarian Formula

5-HTP (5-hydroxytryptophan) is a naturally occurring substance derived from the African plant Griffonia simplicifolia. 5-HTP is the immediate nutrient precursor to the neurotransmitter serotonin. This means that 5-HTP converts directly into serotonin in the brain. Serotonin has many profoundly important functions, including a role in sleep, appetite, memory, learning, temperature regulation, mood, sexual behavior, cardiovascular function, muscle contraction, and endocrine regulation.

Serotonin production declines with age, and at any age its abundance can be compromised further by stress. Low levels of serotonin are most commonly manifested by depressed mood, anxiety, and insomnia, seriously affecting one's quality of life. 5-HTP crosses the blood-brain barrier while serontonin can not, so supplementation with 5-HTP therefore increases production of Serotonin. Serotonin plays an important role in controlling anger, aggression, body temperature, mood, sleep, human sexuality, appetite, and metabolism.

The level of serotonin in certain areas of your brain can have a major effect on your mood. Consuming 5-HTP may increase serotonin in these brain areas, possibly lessening feelings of anxiety and helping you avoid or improve symptoms of depression. Clinical research suggests that 5-HTP might be an effective antidepressant. A German study published in "Archiv fur Psychiatrie und Nervenkrankheiten," researchers found that subjects experiencing depression who consumed 5-HTP supplements for up to 20 days had improvement of their symptoms that was equal to that experienced by others who took antidepressant medication.

5-HTP caused fewer side effects than the prescription drug. The neurotransmitter serotonin helps nerve cells in certain parts of your brain communicate with each other. These brain areas are important in regulating your pattern of sleep, mood, level of anxiety, appetite and sensitivity to pain. Your body needs a constant and adequate supply of 5-HTP, which it converts into serotonin.

5-HTP might also help relieve insomnia according to a review study in "Alternative Medicine Reviews," which concluded that taking serotonin precursors such as 5-HTP can shorten the time it takes to fall asleep and increase a type of sleep called slow-wave sleep. The University of Maryland says that 5-HTP may also help reduce symptoms of fibromyalgia, a disorder that may be caused by low serotonin levels and can cause muscle pain, insomnia, headaches and memory problems.

Taking 5-HTP might also help in a weight control program, possibly by increasing your feeling of fullness after eating and causing you to eat less. As serotonin levels increase your hunger diminishes and you feel satiated faster without feeling the need to restrict your food intake. One study found that women ate less carbs without even trying, and there was less stress-related eating.


Nutrition Info
Serving Size 1 Vcap
 Amount Per Serving
5-HTP (5-hydroxytryptophan) (Griffonia simplicifolia) (Seed)  100 mg  

Serving Size: 1 Vcaps

Suggested Usage:  As a dietary supplement, take 1 Vcap daily, preferably on an empty stomach at bedtime.  Consider taking this product in combination with NOW® Valerian Root, Relora® and Pantothenic Acid.

Other Ingredients:  Rice flour and Cellulose (capsule).
Contains no:  sugar, salt, yeast, wheat, gluten, corn, soy, milk, egg, shellfish or preservatives.  Vegetarian/Vegan Product.

Warning:  If you are currently taking antidepressant medications please consult a physician prior to use. May cause drowsiness.

Disclaimers:  *This statement has not been evaluated by the FDA.  This product is not intended to diagnose, treat, cure or prevent any disease.

Store in a cool, dry place.  Please Recycle .

 Item#: 0106
 UPC: 733739001061

 5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the bean of an African plant (Griffonia simplicifolia).

Sleep Supplements for a Good Night’s Rest

Tricks to help you fall asleep have come a long way since the days of counting sheep. Aside from giving you the feeling of being well-rested, sleep facilitates the detoxification of your brain, consolidates your memory, improves your athletic performance, helps you lose weight, and puts you in a better mood.

These days, people who have trouble falling asleep or who are restless sleepers can enlist the help of a variety of natural sleep supplements for a good night’s rest. We’ve created this natural sleep supplements guide to help you sleep so that you wake up feeling refreshed and ready to go!


0167Active ingredients: L-Tryptophan

Did you know? Have you ever heard a dad or uncle blame the tryptophan in turkey for causing the sudden drowsiness that means he only has the energy to watch football for the rest of the day? Well, while that old wives’ tale has some basis in science, the tryptophan in turkey is not the reason for sleepiness after Thanksgiving dinner. The tryptophan levels in turkey are similar to other meats, but studies have shown that eating foods rich in carbohydrates (like potatoes and desserts) can stimulate the release of insulin and the concentration of competing amino acids in the blood, thereby favoring tryptophan, and allowing it into the brain. Once in the brain, tryptophan is ultimately converted into serotonin and melatonin to promote relaxation, and potentially drowsiness. So the reason for sleepiness is really overeating in general at Thanksgiving, as well as the combination of turkey and all the high carbohydrate desserts. 

Effects on body and sleep: Tryptophan promotes better sleep by promoting healthy levels of serotonin and melatonin - chemicals that are naturally produced by the body which can promote a positive mood and better regulation of the sleep cycle.*


0106Active ingredients: 5-HTP (5-hydroxytryptophan)

Did you know? 5-HTP is the intermediate metabolite between the amino acid L-tryptophan and serotonin. It’s extracted from the bean of the African plant Griffonia simplicifolia.

Effect on body and sleep: 5-HTP supports the production of serotonin in the brain and central nervous system; serotonin can impact sleep, mood, appetite, and body temperature. 5-HTP therefore, is typically used as a sleeping supplement because it supports the production of serotonin, which is in turn, converted to melatonin. Melatonin is a neurotransmitter that helps to regulate healthy sleep/wake cycles. Studies have shown that taking a dietary supplement containing 5-HTP can help people feel more rested upon waking up and can give people an increased energy level during the following days.*



3257Active ingredients: Melatonin

Did you know? Some animals (typically reptiles and amphibians) use melatonin to change the color of their skin.

Effects on body and sleep: Melatonin is naturally produced by the body and is one of the chemicals most directly involved in sleep regulation. Melatonin is also a key regulator of the immune and gastrointestinal systems, and taking a melatonin supplement can further support these systems. The supplemental use of melatonin has been shown in studies to have a positive effect on occasional sleeplessness in some people.*



Valerian Root

4770Active ingredients: Valerian root

Did you know? Valerian root has a long history of use as a supplement to promote sleep. In fact, it was recommended for relief of sleeplessness by Galen, the personal physician to the Roman emperor Marcus Aurelius and an early writer on medicine.

Effects on body and sleep: Valerian has been shown to calm the brain and nervous system, making it useful for some as a supplement for sleep. Valerian is also used for conditions linked to nervousness and typical everyday psychological stress, such as occasional minor breathlessness, headaches, or upset stomachs. Studies have shown that taking a dietary supplement containing valerian root can help users fall asleep faster and wake up less often during the night, leading to improved feelings of rest upon waking and an increased energy level during the day following supplement use.*


Passion Flower

4763Active ingredients: Passion flower extract

Did you know? Passion flower was discovered by Europeans in the 16th century, when Spanish Jesuit priests encountered native Peruvians making a tea from the plant and using it to treat occasional sleeplessness and nervousness. It was soon exported to Europe, where it became extremely popular for its calming benefits and its beautiful flowers.

Effects on body and sleep: Passion Flower extracts have been shown to aid in relaxation and reduce tension and restlessness without creating dependency, and it’s typically used to treat occasional sleeplessness and nervous tension. Studies have shown that taking a dietary supplement containing passion flower can help users fall asleep faster and wake up less often during the night, leading to improved feelings of rest upon waking and an increased energy level during the day following supplement use.*

*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.




Be the first to submit a review on this product!
Review and Rate this Item

Other Items In This Category

NOW 5-HTP 50 mg, 90 Caps
Our Price: $13.99
Retail Price: $17.99
NOW 5-HTP 100 mg, 60 Vcaps
Our Price: $14.99
Retail Price: $19.99
Now Silymarin 2X, 300mg, 200 caps
Our Price: $30.00
Retail Price: $44.00