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
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
- BrandDouble Wood Supplements
- Size5.30
- Medicine strength1,000 mg
- Vitamin & supplement typeMultivitamin Supplements
- Count300
- Age groupAdult
Current price is USD$25.50
Price when purchased online
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Sold and shipped by iHerb
4.556992836775854 stars out of 5, based on 14379 seller reviews(4.6)14379 seller reviews
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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
Health Concern
Immune System Support
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
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Showing 1-3 of 13 reviews
Apr 5, 2025
Poppy
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
May 25, 2026
Jane H.
5 out of 5 stars review
Seller Verified Purchase
After years of search for a reliable sleep aid I finally found Double Wood glycine. It works fast with no tossing and turning. Thank you!
Review from http://doublewoodsupplements.com
Helpful?3P616XFRTKFP274507923
Mar 15, 2026
Mark Z.
5 out of 5 stars review
Seller Verified Purchase
A perfect supplement for a sound sleep. Every night!
Review from http://doublewoodsupplements.com
Helpful?3P616XFRTKFP274507923
