Price History (90 days)
Quick Facts
- Form
- Powder
- Dose
- 1000mg glycine per serving
- Serving
- 1/4 teaspoon (approx. 1g)
- Servings
- 454
- Vegan
- Yes
- Made in
- USA
NOW Foods Glycine Pure Powder
by NOW Foods
Pure pharmaceutical-grade glycine powder providing 1000mg (1g) per quarter-teaspoon serving. Glycine is the simplest amino acid and plays crucial roles in sleep quality, collagen synthesis, and neurotransmitter function. Research shows 3g before bed significantly improves subjective sleep quality and next-day alertness. The 454g tub provides excellent value for a powder-format amino acid.
AI Review Summary
NOW Foods Glycine Powder is one of the highest-value sleep supplements available if you follow the clinical dose of 3g before bed. The zero-additive formulation is as pure as supplementation gets. Research specifically supports glycine for sleep onset, sleep quality, and next-day cognitive performance. The pleasant sweet taste makes it one of the few powder supplements that's genuinely easy to take. A hidden gem that most people overlook in favour of more heavily marketed sleep aids.
Pros
- +Pure amino acid with zero fillers or additives
- +454g tub lasts 5+ months at clinical 3g dose
- +Strong clinical evidence for sleep quality improvement
- +Pleasant naturally sweet taste
Cons
- -Requires measuring out powder — less convenient than capsules
- -1g serving size on label is sub-clinical (3g needed for sleep)
- -Powder format not travel-friendly
Best For
Watch Out
- !Label serving (1g) is below clinical dose (3g) — take 3 servings for sleep
- !May cause mild morning grogginess initially as your body adjusts
Ingredients & Composition
Active Ingredients
- Glycine (free form)
- 1000mg
Clean Label Analysis
Genuinely zero fillers — this is pure glycine powder with nothing else added. As clean as a supplement can possibly be. The slightly sweet taste makes it easy to mix.
Quality & Testing
Third-Party Tested
This product has been independently tested by third-party laboratories for purity, potency, and safety.
Certifications
Additional Specifications
- Type
- Amino Acid
- Form
- Powder
- Dose
- 1000mg glycine per serving
- Serving Size
- 1/4 teaspoon (approx. 1g)
- Fillers Analysis
- Genuinely zero fillers — this is pure glycine powder with nothing else added. As clean as a supplement can possibly be. The slightly sweet taste makes it easy to mix.
- Allergens
- Free from: gluten, dairy, soy, eggs, nuts, shellfish
- Made In
- USA
How We Score Supplements
Our AI analyses reviews from Reddit, Amazon, YouTube, and specialist forums, then scores each product on a 1-10 scale across six evidence-based categories:
Effectiveness
How well the product delivers its claimed benefits, based on aggregated user experiences.
Ingredient Quality
Bioavailable forms, clean label, minimal fillers, no artificial junk. Higher = cleaner.
Value for Money
Price per serving relative to ingredient quality and effectiveness.
Side Effects Profile
Higher score = fewer side effects. 10 means virtually no adverse reactions reported.
Certifications & Testing
Third-party lab testing, GMP certification, and independent quality verification.
Overall Score
Weighted combination of all factors. Our bottom-line recommendation.
Disclaimer: AIScored provides AI-generated summaries based on publicly available reviews and product information. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Affiliate links may earn us a commission at no extra cost to you.