Need help?


(Search by Product Name, Catalog #, or Keyword)

To Order Enter an item's catalog # in a field below
Enter a quantity, and click the Add to Cart button

  • Catalog #


5-HTP, 5-Hydroxytryptophan (100 mg, 60 Caps)

Item # 5767

Quick Overview

5-Hydroxytryptophan (5-HTP) is a naturally-occurring amino acid that plays a vital role in the synthesis of two important neurotransmitters: serotonin and melatonin.

lifetime guarantee made in the usa

Supplement Facts
Serving Size: 1 Capsule
Amount Per Serving % Daily Value
Magnesium (56% magnesium malate and 44% magnesium oxide) 150 mg 38%
Malic Acid (magnesium malate) 465 mg *
5-Hydroxytryptophan (Griffonia simplicfolia seed extract) 100 mg *
*Daily Value not established
Other Ingredients: Hydroxypropylmethylcellulose (vegetarian capsule).

Keep container tightly closed in a cool, dry and dark place. Keep out of reach of children.

What Is 5-HTP?

5-Hydroxytryptophan (5-HTP), also known as oxitriptan, is a naturally-occurring amino acid that plays a vital role in the synthesis of two important neurotransmitters: serotonin and melatonin. Along with vitamin B6, 5-HTP acts as an intermediary when your body metabolizes tryptophan to produce healthy levels of serotonin and melatonin.*

5-HTP is found in certain foods, but only in insignificant quantities; tryptophan, which 5-HTP helps metabolize, is found in turkey, milk, potatoes, pumpkins, and various greens. As a supplement, 5-HTP is usually derived from the seeds of Griffonia simplicifolia, a woody climbing shrub native to Africa.*

Vitamin Research Products’ 5-HTP supplement includes not only high-quality 5-HTP, but also two different forms of magnesium to increase the bioavailability of 5-HTP and increase its benefits in the body, making sure you get the most out of each capsule you take. You can choose a lower dosage of 50 mg of 5-Hydroxytryptophan per capsule or a higher dose of 100 mg per capsule, depending on your individual needs.*

If you’d like to make the absolute most use of this helpful supplement, consider adding Vitamin Research Product’s tryptophan supplement, L-Tryptophan, to your daily intake of vitamins and nutrients. Together, tryptophan and 5-HTP will work synergistically in your body to produce optimal serotonin and melatonin to keep your brain and body functioning at their peak.*

The Importance of Serotonin

Serotonin is one of your brain’s most crucial messengers, and a serotonin imbalance can cost you your mental clarity, your good mood, and your healthy weight. Serotonin passes signals between neurons, relaying commands in your brain; when you don’t have enough serotonin, some of the messages don’t reach their intended recipient. An adequate supply of 5-Hydroxytryptophan is essential to ensure you’ve got enough of this vital neurotransmitter.*

To drive home the importance of healthy serotonin levels, let’s take a look at which health areas serotonin affects. Healthy serotonin levels support...

  • Healthy moods year-round*
  • Calmness and relaxation*
  • Satiety*
  • Weight management*
  • Soothing sleep*
  • Relief from occasional headaches*
  • Optimal energy levels and muscle comfort*
  • Bowel and digestive health*
  • Optimal lung health*

Since 5-Hydroxytryptophan increases production of serotonin, it’s been used to enhance all of the above health areas, as well as others for which suboptimal serotonin levels are thought to be a factor. As you can see, proper levels of serotonin are essential for your health. Research has shown that supplementing with 5-HTP, as well as tryptophan, can help you create and maintain a healthy level of serotonin and promote the optimal function of many different body systems.*

Why You Need Melatonin

Melatonin is the other important neurotransmitter and hormone that 5-Hydroxytryptophan helps create from tryptophan; like serotonin, it has a powerful and wide-ranging effect on your health and your well-being. While the body does produce melatonin in the pineal gland in the brain, many people suffer from melatonin imbalances or insufficient levels, especially since melatonin production decreases as we age. Your best bet to keep your melatonin levels healthy is to take a high-quality 5-HTP supplement, ensuring you never have to worry about the consequences of melatonin insufficiency.*

Primarily, melatonin helps regulate the sleep-wake cycle by causing drowsiness and lowering your body’s temperature in preparation for sleep. However, that’s not all this chemical does: Melatonin also acts as a powerful antioxidant that can easily cross cell membranes and the blood-brain barrier. Melatonin efficiently locates and absorbs free radicals, preventing them from exerting unwanted effects on your body via oxidative stress.*

In addition, melatonin produced by 5-Hydroxytryptophan can also help...

  • Support the integrity of DNA by fighting free radicals*
  • Enhance brain health and confer antioxidant benefits to brain tissue*
  • Support a healthy heart rhythm*
  • Promote optimal immune function*
  • Support healthy cognitive function while aging*
  • Support gallbladder health*

5-HTP’s Demonstrated Benefits

5-Hydroxytryptophan is a nutritional supplement for supporting healthy moods, promoting satiety, and enhancing sleep quality. Since all three of these areas are linked to an imbalance of serotonin and/or melatonin, 5-HTP has been shown to help by increasing production of those two crucial neurotransmitters in the human body. In fact, numerous studies on 5-HTP have been published since 1966, and several double-blind, placebo-controlled clinical trials have demonstrated the benefits of 5-HTP in promoting healthy moods.*

5-HTP has also been shown to improve musculoskeletal health and promote tissue comfort; a 1990 study concluded that several aspects of musculoskeletal comfort over the course of the test were significantly enhanced with supplementation of this important amino acid. In addition, 5-Hydroxytryptophan has also been studied for its effects on supporting normal physical coordination.*

Supplementing With 5-Hydroxytryptophan

As you can see, it’s absolutely necessary for your mental and physical well-being that you have adequate levels of serotonin and melatonin. 5-HTP can help ensure that you lack neither of these important neurotransmitters. With 5-HTP on your side, you can rest easy knowing that your body is protecting its health. Not only that, but you’re helping your body live longer and happier than ever before.*

Why wait? Order your supply of 5-Hydroxytryptophan today and take the first steps on the road to wellness!

Recommended Dosage:

5765 — 33 to 300 mg per day on an empty stomach, generally best to take at bedtime.

5767 — 33 to 300 mg per day on an empty stomach, generally best to take at bedtime.

Customer Reviews
Click here to read important information regarding customer reviews

per page
    Better sleep and better mood.

    I was looking for something to help me sleep better other than benadryl. I started out taking 5-htp with L-tryptophan and I slept amazingly well! After a few months I dropped the L-Tryptophan and just used the 5-HTP and still slept well. Eventually I dropped both but after a couple of months I was having sleepless nights randomly so went back to using 5-HTP. What I really love best about this "sleep aid" is that it helps with my daytime energy and mood! It's an added bonus! I recomend it to women who are premenopausal all the time.

    Reviewed on 1/15/15 by Karen E.

    per page

      Write Your Own Review for 5-HTP, 5-Hydroxytryptophan (100 mg, 60 Caps)

      • 1 star
        2 stars
        3 stars
        4 stars
        5 stars

      * Required Fields