Sleep Soundly™ Melatonin | GNC
Note: This product cannot be sold in Japan

Product Information



Melatonin 3.5 mg per serving

Instant Acting Liquid to Help You Get a good nights sleep*

Sleep Soundly™ is a natural dietary supplement designed to help give you the peaceful sleep you need.

Sleep Soundly™ gives you 3.5 mg of Melatonin per serving. Melatonin is a hormone that is naturally secreted in people. Studies suggest that Melatonin helps regulate a person’s internal clock to help support a good night’s sleep.*

Don’t let another day go by feeling tired and drained. Awaken feeling refreshed and energized instead. Take Sleep Soundly™, the natural supplement designed to help you get the rest you need.*


Nutrition Facts
Serving Size  2 Dropper(s)
Servings Per Container  30

Amount Per Serving     % DV

Melatonin  3.5 mg   **

** Daily Value (DV) not established.
Other Ingredients
Filtered Water, cane juice crystals, Vegetable Glycerin, Natural Flavor, Propylene Glycol, Citric Acid, Potassium Sorbate, Sodium Benzoate
Label (click image to enlarge)

How To Use

DIRECTIONS: Take 2 dropperfuls shortly before bedtime.
For adult use only at bedtime. This product is not to be taken by pregnant or lactating women. If you are taking medication or have a medical condition, consult a physician before using this product. Do not use in conjunction with alcoholic beverages, when driving a vehicle, or while operating machinery.
©2009 Windmill Health Products™
All Rights Reserved. Made in the U.S.A. Manufactured by:
Windmill Health Products™ 6 Henderson Drive
West Caldwell, NJ 07006


4.5 / 5.0
11 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I like this for me is very good
August 2, 2018
4 months ago
Works great!
This product does not PUT you to sleep. It helps you to have a restful and peacefull sleep during the night. My family and I use this product and have been for a while. It has no side effects.
July 14, 2017
They increased the price from $6 per bottle to over $9 per bottle.
January 30, 2017
Sleep Soundly Works wonderfully
In the past I have used prescription sleep aids that worked but had side effects and we terrible to get off of. Sleep Soundly works quickly without side effects and no morning grogginess. I am very grateful to the GNC salesperson who recommended it to me.
April 7, 2013
Works Great !!!
My aunt had bought this for me to try because my daughter has medical conditions and is very hyper around bed time and told me to give her a low dose and see if it helps her fall asleep because she also gives it to my cousin who has autism and said it worked well for him and now she does not have to give it to him. Its wonderful because it is taste less and my daughter does not give me any issues.Im very pleased with this product.
February 24, 2013
This Poduct is Great!
Our doctor recommended this product for our grandchild at a very low dose. It works GREAT!!!!!.
February 11, 2013
Awesome sanity saving product
We have 3 autistic children ages 6, 5, and 3. We have the worst problem with uncontrollable hyperness that can last till 12am-3am, you just never know. This product is safe, has been recommended by at least 20 medical professionals to use for the kids when needed. Sometimes a little morning grogginess, but that's also from not enough sleep too. Son is very picky about taste to a fault, and he WILL take this product from the dropper with no fighting. Slight sweet taste but nothing else. Kudos, thank you!
December 1, 2012
I have been a life long insomniac so falling asleep is always a battle for me. I don't like taking Tylonel PM or prescribed sleep medications because of real and/or potential side effects. Melatonin sublingual pills work, but not always.

This product has never failed me! I squeeze two droppers of Sleep Soundly under my tongue and within 15 minutes I am nodding off.

If I awaken during the night, I squeeze another dropper, go to sleep again and still don't get that awful 'hangover' feel like some products.
June 10, 2012
Works Well
Our doctor prescribed melatonin to our daughter who has trouble sleeping. She could stay up until after midnight every night if she didn't have melatonin. We put 2.5 in a drink and she drinks it about 30 min before bedtime. It works fine and she is rested and ready to go in the mornings. We had 6 years of very few hours sleep until our doctor told us about melatonin.
June 11, 2011
Great for Kids!
I give one dropper full to each of my children 30 minutes before bedtime. This stuff works fantastic! My kids really like it because it helps them settle down. We mix it with a little bit of juice. Works wonders! I use it too! No groggy feeling in the morning! I highly recommend!
January 6, 2011
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 4 questions Browse 4 questions and 3 answers
Why did you choose this?
GNC Store
this did not work - would not buy again
s h on Apr 7, 2015
this did not work - would not buy again
s h on Apr 7, 2015
Regarding Nutritionworks Melatonin Sleep Soundly liquid. I see it recommends 3.5 mg per serving but it is not clear how many mgs are in a single dropper. Can you clarify how many droppers it takes to achieve 3.5mg?
A shopper on Aug 22, 2016
What will i feel like if i take the recommended amount and don't get a full eight hours sleep?
A shopper on Oct 2, 2013
BEST ANSWER: If you don't sleep the recommended amount, you will feel tired.
I have a one year old Son that does not Sleep at night and take awhile going back to sleep. Hes waking up 3-4 times a night we have dry rocking him, patting him and feeding him but he still waking up. Can he take Sleep Soundly?
A shopper on Aug 27, 2012
BEST ANSWER: No, this is meant for adult consumption only.
Is there a taste to this, and if so, what is it?
A shopper on Aug 9, 2012
BEST ANSWER: There is a slightly sweet natural taste.