Your Cart is Empty
But it doesn't have to be.
Continue Shopping.
Added to Cart
Cart Total:
Customers Also Bought:

Natural Factors, Stress-Relax, Tranquil Sleep, 60 Chewable Tablets

Our Price:
You Save:
$9.58 (30)
Earn 10% Loyalty Credit ?

This product is already in your Wish List.

View Wish List

This product is now in your Wish List.

Sorry, this product is no longer in stock.

In Stock
  • Expiration Date: Jun 2018
  • Shipping Weight: 0.41 lbs (0.19 kg)
  • Product Code: NFS-02831
  • UPC Code: 068958028316
  • Package Quantity: 60 Chewable Tablets
  • Dimensions: 4.7 x 2.8 x 2.8 in, 0.35 lbs (0.16 kg)
  • Due to Japanese Custom’s regulations, a maximum of two bottles per order can be imported into Japan.

Bundle Offer
Save $4.00 when you purchase these items today for only $29.32
Total: $33.32
Combo Discount: - $4.00
Together: $29.32

Sorry, this product is no longer in stock.

Product Overview


  • Dietary Supplement
  • Advanced Fast Acting Formula
  • 5-HTP, Suntheanine & Melatonin
  • Recommended by Dr. Michael Murray
  • Purity & Potency Guaranteed

Tranquil Sleep formula provides a unique combination of natural compounds that support relaxation and enhance sleep quality. In a tasty fruit flavored chewable tablet.

All Natural Factors products are manufactured in accordance with the Government of Canada's Good Manufacturing Practices (GMP), among the highest standards in the world.

Suggested Use

Chew 2 tablets at bedtime or as directed by a health professional.

Other Ingredients

Organic cane sugar, stearic acid, xylitol, silica, natural flavors (pineapple, banana, pomegranate, mango, passion fruit, peach), citric acid, magnesium stearate (vegetable grade).

Contains no artificial preservatives, colors or sweeteners; no dairy, soy, wheat or yeast.


Keep out of reach of children.

Sealed for your protection. Do not use if seal is broken. For freshness, store in a cool, dry place.

Supplement Facts
Serving Size: 2 Tablets
Servings Per Container: 30
  Amount Per Serving % Daily Value
Calories 15  
Total Carbohydrate 3.5 g 1%‡
Sugars 3 g **
Suntheanine L-Theanine 200 mg  
5-Hydroxytryptophan (5-HTP) (from Griffonia simplicifolia) (seed) 30 mg **
Melatonin 3 mg **
‡ Percent Daily Values are based on a 2,000 calorie diet.
** Daily Value not established.
iHerb Customer Reviews

Perfect formula

Posted by 4977705355401123290 on Oct 12, 2016

Very helpful in aiding calming and falling asleep when feeling restless.

Verified Purchase

Was this review helpful to you?


Posted by Reviewer2004538 on May 03, 2016

Works really good.

Verified Purchase

Was this review helpful to you?

best sleep help ever

Posted by Reviewer1469541 on Mar 20, 2015

very happy with how these help me fall fast asleep. I had really bad jet lag and this sorted it out quickly.

Verified Purchase

Was this review helpful to you?

Did not like

Posted by Reviewer3100355 on Feb 03, 2015

These did not work for me. I've since learned that I do not like any product with melatonin in it. I now take 5-htp and suntheanine, but separately for their own purposes.

Verified Purchase

Was this review helpful to you?


Posted by Reviewer3231995 on Jul 15, 2014

I probably have the worst insomnia in the entire world!! Tried everything and then discovered Natural Factors Tranquil Sleep formula (lozenges)... I take half of one lozenge and I'm drowsy very quickly. If I take more than half, then the melatonin dose is too much for me and I wake up with a headache. I am over-the-moon with how wonderful these lozenges are. But... I find that with all sleep formula's, it's best to change around every 3-4 days and then they work wonderfully! Now, on to their other formula: Sleep Relax. These are as wonderful as the lozenges, if not better! I just don't know which is better... they both work phenomenally! I just take one and it's plenty... I think two would be too much for me.... suggest you try one first and see how you do.

Verified Purchase

Was this review helpful to you?