No Thanks

Your 10% Off Promo Code is on the Way! Thanks for signing up for emails.

You're now signed up to receive exclusive deals and savings opportunities!

Thanks again for connecting with us. Keep an eye on your inbox — your first coupon is on its way!

Thank You! This email address is already signed up

You are signed up for the following:

  • Offers
  • Recipes
  • E-Newsletter
  • Updates & Reminders

Thank you for your interest and be assured that you will continue to receive our emails at this address.

Look for your next communication from us within the next week.


We are having trouble processing your request.

Our apologies!

Please try again later.

Search Please enter an item number or keyword
Shop by
Do You
Need Help?


5-HTP Time Release

5-HTP Time Release

Item: NA385

  • Time release tablets

  • Promotes positive mood

  • 100% vegetarian

  • Read Natrol 5-HTP Time Release reviews below!

100 mg 45 Tabs

MSRP $19.29
Save 49%
Yes! I want free shipping over $50 on my next automatic shipment of this item.  days. Learn more
In Stock

Supplement Facts

Serving Size: 1 Tablet

Servings Per Container: 45

  Amount Per Serving %Daily Value
Calcium(from Dibasic Calcium Phosphate) 32 mg 2%
5-HTP (5-Hydroxytryptophan)[from Griffonia simplicifolia (seed)] 100 mg *

*Daily Value (DV) not established.

Other Ingredients: Methylcellulose, Microcrystalline Cellulose, Hypromellose, Stearic Acid, Silicon Dioxide, Magnesium Stearate, Glycerin.

Directions: Take 1 tablet, up to two times daily, with food. Do not exceed recommended dose.

WARNING: Consult your healthcare professional prior to use if you have or suspect a medical condition, or are taking prescription drugs, including drugs for depression, migraines, Parkinson's disease or psychiatric disorders. Do not use with other supplements containing L-Tryptophan or 5-HTP. Do not use if you are pregnant, lactating or under the age of 18 years.



  • NO: Milk, Egg, Fish, Crustacean Shellfish, Tree Nuts, Peanuts, Wheat, Soybeans, Yeast, Artificial Colors or Flavors, Added Sugar or Preservatives
  • 100% Drug-Free

Shipping Weight

.10 lbs

  • Time release tablets

  • Promotes positive mood

  • 100% vegetarian

  • Read Natrol 5-HTP Time Release reviews below!

Natrol 5-HTP Time Release is a plant-derived source of an amino acid that naturally increases the body's level of serotonin, the chemical messenger that affects emotions, behavior, appetite, thought and sleep. Regular use of Natrol 5-HTP helps provide a more positive outlook, promotes relaxation & calm, and greater appetite control. Natrol 5-HTP TR is 100% vegetarian and has a controlled delivery system that releases 5-HTP slowly and then steadily over a period of 12 hours. No yeast, wheat, corn, milk, egg, soy, glutens, artificial colors or flavors, added sugar, starch or preservatives. Want to hear more? Check out customer-created Natrol 5-HTP Time Release reviews below!

Natrol 5-HTP Time Release Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

5-HTP Time Release is rated 4.9 out of 5 by 27.
Rated 5 out of 5 by from Great purchase!!! I love this brand of 5HTP, not only is the price right and shipping convenient,but it works really well and does everything I expected from this supplement. Very pleased!!
Date published: 2016-08-12
Rated 5 out of 5 by from Good product My son sleeps better and seems much calmer.....
Date published: 2013-07-03
Rated 3 out of 5 by from Def' helps Has worked for me, I notice after I miss a day or two my agitation comes back; lg qtys not good in general; but for me at 250lbs, 2 a day has done well...
Date published: 2013-05-21
Rated 5 out of 5 by from mood stabilizer When my dog died I couldn't stop crying and someone in my local health food store recommended Natrol 5-HTP to help my mood. I started taking it and it really helped a great deal. When I saw it in your catalog I was thrilled because it cost less than what I was paying locally even with your low shipping costs. Getting it in the mail has made it really convenient - no fighting the traffic. Thank you - it has been a great all around.
Date published: 2013-04-03
Rated 5 out of 5 by from Don't give up. The non-timed release made me nauseated and wound me up instead of putting me to sleep, so I quit taking it. After three nights with a total of 10 hours' sleep, I thought, "If I'm never going to get another decent night's sleep, I could really use something like that during the daytime." I bought the timed release 100mg and it did help keep me more alert at work, with better concentration. Four nights later, I slept until my alarm went off for the first time in well over two years. The next night (Friday) I slept until nearly noon and woke up bounding with energy. That's another thing that hasn't happened in years. It's an ongoing experiment. Hint: if 5-htp winds you up, don't take 12 hour timed release *at noon*.
Date published: 2012-06-03
Rated 5 out of 5 by from Love this Works great...keeps me focused all day
Date published: 2012-05-16
Rated 5 out of 5 by from Best Time- Release 5-HTP This product has helped me manage negative emotions and bad moods. This product is very effective.
Date published: 2012-04-14
Rated 5 out of 5 by from Terrific This supplement is terrific. I recommend it to friends and swear it by. I think the time-released formula helps it's effectiveness and increases mood stability. I often cut the pills in a half, which seems to suffice. It does everything the bottle suggests - enhances mood, helps control appetite and regulates sleep. The one drawback I've found is some days when I don't take it I might be slightly more irritable or grumpy. I take that as a sign that it works. Swanson's pricing is the best I've found.
Date published: 2012-04-06
Rated 5 out of 5 by from Happy that it is Time-Release 5htp is a great mood booster. I'm very happy that Natrol has produced a time-release form; this makes it very convenient to use and avoids drowsiness.
Date published: 2012-03-17
Rated 5 out of 5 by from Love it! This works great. I think it has improved my quality of sleep a lot!
Date published: 2012-03-14
Rated 5 out of 5 by from Very Happy This was my first experience with 5-HTP. I needed a seretonin supplement. I found this one to be much more than I expected. I am very happy, calm and sleep well. I have since tried other brands, but always come back to this one. It is powerful but gentle on my system.
Date published: 2011-07-14
Rated 5 out of 5 by from Good product, great price Bought this from Swanson for less than half of what I paid in a local vitamin shop. I read reviews before purchasing - I feel it's a beneficial product for mood support. It doesn't cause jitters or any other negatives. And as a bonus, it seems to help with sleep as well as appetite (suppressant). I will continue taking this product and will recommend to others.
Date published: 2011-07-05
Rated 5 out of 5 by from 5HTP Works I have been on the product for about 6 weeks, and find I have no real food cravings at all. I began taking it in hopes it would help me fend off the nighttime snacking binges. I believe this is a product that works, and it is helping me to lose weight. Would definitely recommend it to others.
Date published: 2011-06-07
Rated 5 out of 5 by from Super-terrific value Highly effective mood settler. Zero side-effects. Quick service and excellent value. Doesn't get any better than this product or provider.
Date published: 2010-10-22
Rated 5 out of 5 by from Recommended I was having problems with nightmares and my overall outlook on life. This supplement helped me greatly it is the one supplement that i make sure i never run out of.
Date published: 2010-07-10
Rated 4 out of 5 by from the only 200 mg for the most count i can find I take these because they are the lowest priced 200 mg 5HTP i can find, but I don't like the tablets as compared to the capsules and I don't think these are as good as the ones with the yellow label. I'd really like it if they put more 200mg capsules in a package. I also don't understand why 5HTP is so expensive. I don't know if these are working like the other brand i used to use but i tried going with them and noticed the difference. so they must be doing something.
Date published: 2010-06-09
Rated 5 out of 5 by from Really fantastic product I usually get the Swanson's brand 5 htp but they were having a sell on the time release...Swanson's products are amazing but I was finding that every time I took a pill it would knock me out so i could only take it at night. With time release I can take it now anytime without feeling tired. I love this product it really helps with the lawls. My sleep is extremely restful, and my moods have mellowed in there extremes
Date published: 2010-04-18
Rated 5 out of 5 by from Relax Time release is the way to go with 5-HPT. Works well and seems to last all day. It's a keeper.
Date published: 2010-02-24
Rated 5 out of 5 by from Best 5 HTP for Time Release I order often from Swanson and have enjoyed the savings and quality. They also have a large varity of name brands. I use all Swanson except for the Natrol 5 HTP because it is a time release. Well, I ran out. I have just placed my order for more. This supplement really helps me deal with stress. I'm 59 pushing 60 in June and work the 12midnight - 8AM tour 40 hours a week in a hospital. I can really feel the emotional and energy level drain when I don't use this product. Thanks Swanson for all you do for me and my family!
Date published: 2010-02-19
Rated 5 out of 5 by from works for me Had to buy this product because the regular 5htp was out of stock. Really can tell the difference in the time release formula in the afternoon. Take one every morning and dont get the blahs all day. Little more expensive than regular, but well worth it for me
Date published: 2009-12-11
Rated 5 out of 5 by from works like a charm This time released 5htp is fantastic. I take it early in the evening and it gives me a wonderful nights sleep without a hangover in the morning. The time release keeps it working all night long. I have tried many brands and by far this works the best!!!
Date published: 2009-10-31
  • y_2018, m_1, d_11, h_9
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasreviews, tv_6, tr_21
  • loc_en_US, sid_NA385, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_swansonhealth
Swanson Quality Assurance

Why Shop Swanson®?

We know how important your health is to you and your loved ones. That’s why we’re focused on delivering only high quality products you can trust at the best value.

Our lab evaluates every product to make sure it’s compliant with strict standards and government regulations, and we fully believe in and stand behind our products. If you’re dissatisfied for any reason, we’ll give you a full refund and pay return shipping.

Swanson's Standards

We are dedicated to offering the highest quality products at the best price. Find out more about how we ensure such a high standard in everything we do.

Learn More
Customer Service

Easy Refill

  • Get your favorite products delivered automatically
  • 10% off future orders of Swanson brand products in your subscription
  • FREE standard shipping on all future orders over $50
  • Control the frequency, delivery date, item quantity... or cancel at any time
  • Email reminders before each delivery
See all FAQs here