Label snapshot
What the product contains and what one serving costs, according to our catalog. Label amounts are not personal dose recommendations.
| Ingredient | Amount per serving |
|---|---|
| Glycine | 1,000 mg |
Amounts are per label serving as recorded in the catalog and are not a recommendation. Testing status reflects what the brand lists. Nothing here is medical advice.
These calculations describe our scoring method. They are not a recommended dose or proof of benefit from this product.
Public lab certificate, tested by independent lab, top 10% value.
Read the evidence (1 study)Evidence gates dose: the evidence grade sets the ceiling, and the dose decides how much of that ceiling the product reaches. Value = inverse of price-per-trial-dose-day. Community = mean sentiment of external reviews. Safety caps applied after weighting.
This score is our editorial judgment, not a scientific standard. We combine published evidence, dose, price, transparency, and consumer signals into one composite: this is our method, not a peer-reviewed clinical rating. A higher score means a product does better on the factors we weight, not that it is medically proven to work.
This Double Wood Supplements Glycine Supplement scores 7.6, making it a strong scorer. It delivers 1000mg of Glycine, inside the studied range of 1000–10000mg with grade B evidence (promising human data, not yet comprehensive). Transparency is a clear strength (score: 9.0), with third-party testing and a public lab certificate.
The science behind each active ingredient, independent of which brand sells it.
Cheap amino acid with better sleep and glutathione-precursor benefits.
The specific product: dose, price, transparency, and what buyers report.
Safety flags, transparency gaps, dosing concerns, and recurring buyer complaints.
The main ingredients of this product, in plain language.
Cheap amino acid with better sleep and glutathione-precursor benefits.
Read about Glycine →Hard numbers and independently checked status. Expand each block for its source.
All product data is checked against original sources. Prices, doses, and testing status are updated when product pages change. Evidence grades are reviewed when new human RCTs are published. Read how we verify.
3.8 out of 5 across 169 verified reviews on 5 platforms.
Medium confidenceConsumer sentiment compiled from 3 public sources.
positive sentiment
Amazon reviewers report good value and effectiveness for relaxation, though a few note added fillers in capsules.
Compiled from Amazon listing located during research; verified at build time.
169 reviews · 3.8/5 · mixed sentiment
Double Wood Supplements' company-wide Trustpilot rating is a mixed 3.8/5 from 169 reviews.
Compiled from Trustpilot listing located during research; verified at build time.
2 threads discussed · mixed sentiment
Reddit's r/Supplements has repeated threads questioning Double Wood Supplements' overall product reliability across its catalog.
Compiled from Reddit listing located during research; verified at build time.
Same brand profile on Trustpilot country sites: New Zealand 3.6.
These are consumer sentiment signals. They do not measure whether the product actually works. See our evidence section for that.
No external reviews aggregated yet for this product.
Published evidence, claim checks, regulatory status and what could not be verified.
The studies that established the trial dose and evidence grade for each active ingredient in this product. Click through to read the original paper.
Large 240-capsule bottle at budget pricing. Flexible dosing guidance (1000-2000mg standard, up to 5000mg) covers both sleep-support and general amino-acid supplementation use cases.
If you are the manufacturer or brand owner of Glycine Supplement and believe any data on this page is incorrect (wrong dose, wrong ingredient, wrong price, missing certification, outdated status), you can request a correction.
We review every request, verify it against primary sources, and publish any accepted change with a dated note. Corrections from brand owners are treated the same as corrections from anyone else: verified before they move.
Request a correction →The next highest-scoring products in Amino acid, same scoring method, same rules.
Thorne HealthTechStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
BulkSupplementsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
BulkSupplementsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Double Wood SupplementsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Double Wood SupplementsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Double Wood SupplementsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Double Wood SupplementsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.
Double Wood SupplementsStatus as recorded in the catalog from brand materials; not independently verified by NO1GEVITY.
Editorial score, not proof that this product works. Research-dose calculations are not dosing advice.