Glycine Supplement - 1,000mg (300 Capsules) Amino Acid for Sleep Quality Support (Glicina) by Double Wood Supplements
Glycine Supplement - 1,000mg (300 Capsules) Amino Acid for Sleep Quality Support (Glicina) by Double Wood Supplements
Hero image 0 of Glycine Supplement - 1,000mg (300 Capsules) Amino Acid for Sleep Quality Support (Glicina) by Double Wood Supplements, 0 of 4

Glycine Supplement - 1,000mg (300 Capsules) Amino Acid for Sleep Quality Support (Glicina) by Double Wood Supplements

|24 ratings

Key item features

  • IMPROVES SLEEP QUALITY: Glycine
  • a semi-essential amino acid
  • may support relaxation and the ability to fall asleep due to its potential calming effect on the brain
  • IMPROVES COGNITIVE CLARITY: Studies suggest glycine may support memory performance.
  • INGREDIENT PURITY: Our gluten-free
  • Glycine contains 1000 mg per serving
  • a higher dose than many other brands supplements
  • maximizing potential benefits

Specs

Brand, Double Wood SupplementsSize, 5.30Medicine strength, 1,000 mgVitamin & supplement type, Multivitamin SupplementsCount , 300Age group, Adult

About this item

Product details

Glycine is an amino acid and neurotransmitter which can be produced by the body to some degree but is primarily obtained through diet and is found in protein rich foods such as meat, dairy, and legumes.

  • IMPROVES SLEEP QUALITY: Glycine
  • a semi-essential amino acid
  • may support relaxation and the ability to fall asleep due to its potential calming effect on the brain
  • IMPROVES COGNITIVE CLARITY: Studies suggest glycine may support memory performance.
  • INGREDIENT PURITY: Our gluten-free
  • Glycine contains 1000 mg per serving
  • a higher dose than many other brands supplements
  • maximizing potential benefits
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

Brand

Double Wood Supplements

Size

5.30

Medicine strength

1,000 mg

Vitamin & supplement type

Multivitamin Supplements

Indications

Directions

Instructions

We recommend taking 1000 mg – 2000 mg (2-4 capsules) of Glycine per day on an empty stomach. If using Glycine to support sleep quality, take the full day’s dose 1-2 hours before going to sleep. We do not recommend exceeding a dosage of 5000 mg (10 capsules) per day.

Warranty

Warranty information

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Customer ratings & reviews

4.8 out of 5 stars
stars
24 ratings12 reviews
Includes global ratings and reviews
How item rating is calculated
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 12 reviews

Apr 5, 2025
Reviewer name: Poppy
Sold byDouble Wood SupplementsDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

5 Fuggin Stars – Life-changing. I finally slept.

I don't even know how to put this into words. I've struggled with severe sleep issues for years—both falling and staying asleep. I've tried everything: melatonin, Benadryl, Dramamine, even prescriptions like Xanax and Ativan. Nothing ever gave me more than a few broken hours… until now. I took the full 1,000mg serving of Double Wood glycine (two 500mg pills), and for the first time in years, I slept from 10:30 PM to 4:00 AM without waking up once. No grogginess, no melatonin nightmares, no side effects—just deep, peaceful, real sleep. I honestly got emotional. It's been so long since my body felt safe enough to truly rest. I have POTS, which makes my heart race and makes it extremely hard for me to relax enough to sleep. I'm also hard to sedate—most medications barely touch me, even at high doses. For glycine to calm my nervous system enough for that kind of sleep… it's honestly unbelievable. If you're struggling with sleep, especially if you're neurodivergent, sensitive, or dealing with a condition like POTS that keeps your body in overdrive—please try this. I've been so desperate for so long, and this has given me hope. It might just help you too. It's truly changed my life.

Helpful?3P616XFRTKFP274507923
Dec 10, 2025
Reviewer name: Jose B.
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

all their products' are great

Review from doublewoodsupplements.com
Helpful?3P616XFRTKFP274507923
Jun 24, 2023
Reviewer name: Fred R.
5 out of 5 stars
5 out of 5 stars review

I have difficulty with sleep onset. I found 4000 mg of glycine 45 minutes before lights out with 2000mg of magtein and 400mg of L-theanine has soled the problem

Review from doublewoodsupplements.com
Helpful?3P616XFRTKFP274507923
Current price is $25.50
Price when purchased online
  • Free shipping
  • Free Holiday returns until Jan 31

How do you want your item?

How do you want your item?
Ships to
Arrives by Tue, Nov 17
|
Sold and shipped by iHerb
4.577021631607175 out of 5 stars
4.6 stars out of 5, based on 16781 seller reviews(4.6)
Extended holiday returns
Free Holiday returns until Jan 31