• No Sales Taxes
  • Free No-Hassle Returns
  • All Products 100% Guaranteed
  • Fast Free Shipping On All Orders

M-F 9-10 EST Hablamos Español
Orders placed before 5 PM EST ship the same day FREE SHIPPING on all orders Details

5-Hydroxytryptophan 90 Vegetarian Capsules

Item # TR1228
Our Price: $27.90
Free Shipping Included for all US addresses and territories
Magnesium Citrate 90 Capsules
Regular Price: $9.64
Our Price: $8.03
See Details
Ultra Preventive X 240 Vegetarian Capsules
Regular Price: $42.98
Our Price: $35.82
See Details
5HTP 100 mg 90 Vegetable Capsules
Regular Price: $53.90
Our Price: $53.90
See Details
5-Hydroxytryptophan 90 Vegetarian Capsules
5-Hydroxytryptophan 90 Vegetarian Capsules5-Hydroxytryptophan 90 Vegetarian Capsules5-Hydroxytryptophan 90 Vegetarian Capsules5-Hydroxytryptophan 90 Vegetarian Capsules5-Hydroxytryptophan 90 Vegetarian Capsules5-Hydroxytryptophan 90 Vegetarian Capsules

Product Q & A
MFG # SA503
UPC # 693749503026
Official Website: http://www.thorne.com

5-Hydroxytryptophan (5-HTP) is the intermediate metabolite produced when the body initiates the process of converting the essential amino acid L-tryptophan to serotonin. Serotonin levels in the body are associated with the regulation of sleep‚ mood‚ aggression‚ appetite‚ temperature‚ sexual behavior‚ and pain sensation.

Supplementing with 5-HTP to facilitate serotonin production is preferable to supplementing with L-tryptophan because‚ unlike L-tryptophan‚ 5-HTP cannot be shunted into niacin or protein production. Supplementation with 5-HTP bypasses the conversion of L-tryptophan into 5-HTP by the enzyme tryptophan hydroxylase‚ the rate-limiting step in the synthesis of serotonin and a step that can be inhibited by a number of factors‚ including stress‚ insulin resistance‚ increasing age‚ and deficiencies of vitamin C‚ folate‚ and iron.

5-HTP is well absorbed when taken orally‚ with about 70 percent ending up in the bloodstream. Intestinal absorption of 5-HTP doesn’t require the presence of a transport molecule and is not affected by the presence of other amino acids; therefore‚ it may be taken with meals without reducing its effectiveness. 5-HTP easily crosses the blood-brain barrier and effectively increases central nervous system (CNS) synthesis of serotonin.

5-HTP has been shown to have a beneficial impact on mood‚ discomfort associated with fatigue‚ sleep‚ and carbohydrate craving. Several studies of individuals with negative mood status have shown significant positive response with 50-300 mg of 5-HTP daily.

To further facilitate serotonin production‚ Thorne Research's 5-HTP formula contains the active form of vitamin B6‚ pyridoxal 5'-phosphate‚ which is necessary in order to convert 5-HTP to serotonin. 5-HTP is commercially produced by extraction from the seeds of the African plant‚ Griffonia simplicifolia.

Each dose of two capsules provides 100 mg of 5-hydroxytryptophan. One bottle of 5-Hydroxytryptophan by Thorne Research provides 90 vegetarian capsules‚ which will last for about 45 days at the recommended dosage.

Thorne Research strives to provide pure‚ high-quality supplements to people looking to enhance their health and well-being. Its products are commonly used in prestigious research studies‚ and are recommended by many doctors and health care practitioners. The company always goes the extra mile to ensure that Thorne Research dietary supplements are safe and effective for immune-compromised‚ allergic‚ and chemically sensitive patients.

These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose‚ treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.

Serving Size 2 Capsules
Servings Per Container 45

Amount Per Serving / %DV

Vitamin B6 (as Pyridoxal 5'-Phosphate) 6.8 mg / 340%
5-Hydroxytryptophan 100 mg / *

*Daily Value not establsihed.

Other Ingredients: Microcrystalline Cellulose‚ Hypromellose (derived from cellulose) capsule‚ Leucine‚ Silicon Dioxide.

This product does not contain wheat‚ gluten‚ corn‚ yeast‚ soy‚ egg‚ dairy products‚ or artificial colors‚ sweeteners‚ or flavors. This product also does not contain lactose‚ palmitic acid‚ or magnesium‚ calcium‚ or vegetable stearates.

Take 1-2 capsules three times daily or as recommended by a health-care practitioner.

WARNING: This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. If pregnant‚ nursing‚ or trying to conceive‚ consult your health-care practitioner before using this product.5-Hydroxytryptophan should be used with caution in an individual currently being treated with an SSRI‚ MAO inhibitor‚ or other antidepressant medication.

5-Hydroxytryptophan 90 Vegetarian Capsules
4.5 Stars based on 15 Review(s)
Salt Lake City, UT
5/5 Stars
I would recommend this item to a friend.

highly recommended
November 18, 2013
I'm truly a bit surprised, but I think this product takes the edge of my anxiety for food.

1/5 Stars

Not my favorite
September 19, 2013
5-Hydroxytryptophan gave me stomach ache. I prefer the sub lingual version as it doesn't create a stomach ache.
Stomach ache

SF Bay Area, CA
5/5 Stars
I would recommend this item to a friend.

good recommendation
May 19, 2013
My ND recommended 5-Hydroxytryptophan to help sleep, taking one at night. I was also very anxious and overwhelmed at work and the next time I saw her she said to take one in morning as well. It really helps with the anxiety and sleep but my mind is still very sharp and creative at work and I don't have the side-effect of vivid dreams that some people do.

Phoenix, Az
4/5 Stars
I would recommend this item to a friend.

it works
April 26, 2013
Within days of starting 5-Hydroxytryptophan I experienced reduced carbohydrate cravings and feel more rested. So far I am taking 5-Hydroxytryptophan at bedtime only as it does seem to cause some drowsiness.

5/5 Stars
I would recommend this item to a friend.

good sleep
April 12, 2013
I can sleep through the night and wake up rested when taking 5-Hydroxytryptophan.
makes me sleep

5/5 Stars
I would recommend this item to a friend.

It works
April 4, 2013
I needed something to help with depression. My ND recommended 5-Hydroxytryptophan to me. This does work to lift my mood. It also helps control my anxiety. I found too, that it helps promote healthy sleep. I take one in the morning and one in the evening.
works quickly small pill

Maricopa, AZ
5/5 Stars
I would recommend this item to a friend.

Great Product!
December 12, 2012
I have been taking Thorne 5HTP for over 2 weeks now. I am feeling great! I was taken it because my Serotonin level was very low. 5-Hydroxytryptophan has helped alot.
How it has made me feel better.
It did give me an upset stomach at first and it at times does give me heartburn.

Phoenixville , PA
5/5 Stars
I would recommend this item to a friend.

GREAT product!!
October 30, 2012
My Doctor recommended taking 3 capsules of 5-Hydroxytryptophan with Melatonin to sleep. It works GREAT!! 99% of the time, I get a good nights sleep, and I'm not usually drowsy at all when I get up!

New Orleans,la
5/5 Stars
I would recommend this item to a friend.

Been a blessing
December 22, 2011
Weened off antidepressant with no issues. Then moved up my mg of 5htp week by week. Been taking 5-Hydroxytryptophan everyday for 6 mos. I will only use this brand.
Helps with anxiety, low mood and sleep.
sometimes makes me drowsy in day

Oregon, United States
5/5 Stars
I would recommend this item to a friend.

Improves Mood, Helps Sleep
May 31, 2011
I've been using this 5HTP for about 10 months now. It helps me sleep like i did when i was a teenager, plus it improved my mood very quickly. I felt better the next day. I had been on a low dose of Paxil for 9 months prior because of a difficult work situation (which i quit) but wanted off because of the side effects. the only side effect i've had from this is very vivid dreams. My 21 yr old college son was on Celexa for anxiety and depression for about 1 year and also wanted off. He waited 4 months before starting the 5HTP and also felt better immediately. He's now been on it for 6 months and after years of insomnia he's sleeping well at night. He also has some seasonal depression because it is dark & rainy in our area throughout the winters. Now my 19 yr old daughter has begun taking it - pressures of freshman year of college were making it hard for her to sleep and very prone to tears. she also felt better within 2 days. I have nothing but good things to say about it, although after passing it out to several friends, most weren't as thrilled as i was. To me, it's all good.
low cost; fewer side effects than prescription drugs; better sleep; better mood
i only take 1 capsule a night - taking 2 makes me too sleepy the following morning. some weird dreams.

san diego
5/5 Stars
I would recommend this item to a friend.

5-Hydroxytryptophan 90 Vegetarian Capsules by Thorne Research
May 18, 2011
This is a new supplement for me. I have been using melatonin to avoid taking prescription sleep aids. So far it has helped my sleep pattern. Excellent user friendly and quick access website. The products are the lowest on the 'net and always free shipping with every purchase. It just doesn't get any better than PUREFORMULAS!
2 small easy to swallow pills

Bedford, New York
5/5 Stars
I would recommend this item to a friend.

Very nice graphics.
May 6, 2011
Effective for relaxation at night which is why I purchased it.
Relaxing properties.

bellingham, WA
5/5 Stars
I would recommend this item to a friend.

5-hydroxytryptophan vegetarian capsules by Thorne
February 21, 2011
good reliable product. Is prescribed by my naturopathic physcian for my ADD along with other medicine.
it works. able to focus better
nothing I don't like

Twin Cities, Minnesota
5/5 Stars
I would recommend this item to a friend.

Thorne has best product
February 18, 2011
On the advice of my doctor, I am taking 5-HTP for improved sleep. I've tried several other brands and Thorne is hands down the most effective. I will continue to take this brand because of it's high quality. There really is a difference. After sleeping better, my mood is more even and less anxious. I love being able to get a good night's sleep again.

southern maine
4/5 Stars
I would recommend this item to a friend.

amazing results
October 17, 2010
I have been taking hydrosytryptophan for two months now. My dr reccomended them to me for a lifelong anxiety/sleep related problem. I am on meds for sleep and anxiety which worked inthe beginning, but the effectiveness has worn down. I started this product taking one , twice a day on an empty stomach. Increased to 2 - twice a day. I have such a feeling of "well being" now. When I wake at night, I no longer go into "oh my god, i'll never get back to sleep" panic mode. I just go back to sleep! I have never expeerienced this feeling before due to an auto immune and nervous system disorder.
works well with meds.
slight nausia after taking.

We don't share or sell your information. EVER.
Read our privacy policy.

PureFormulas stands behind the
authenticity of everything we sell.

PureFormulas has made it our mission to
provide you with an outstanding selection
of health and beauty products at highly
competitive prices.

Read our guarantee

Domestic orders placed by 5 PM Eastern
Time will be packed and shipped
the same day, pending verification of billing
information and the shipping method
selected. Orders containing out-of-stock
items or refrigerated items will be
processed as quickly as possible, but
won't necessarily be shipped out the same day.

Excludes all orders placed during
weekends and on major US holidays
(Memorial Day, Independence Day, Labor
Day, Thanksgiving Day, Christmas Day
and New Years Day).

Read our shipping policy