Bulk Glycine Powder
by Bulk
Compare Prices
Bulk Glycine Powder delivers a clinical 3g dose of pure, additive-free glycine per serving across 166 servings, making it one of the better-value single-ingredient glycine options in the UK market. Best for People optimising sleep quality or struggling with insomnia and DIY supplement stackers building a pre-sleep protocol.
According to the AIScored 0–100 scoring system, Bulk Glycine Powder by Bulk scores 77.0/100, ranking #6 out of 30 products in Amino Acids (2026). Strongest category: Ingredient Quality (87.0/100). Weakest: Certifications (68.0/100).
Is Bulk Glycine Powder worth buying?
“Bulk's Glycine Powder is a no-nonsense option that delivers exactly 3g of pure glycine per serving—the clinical dose you'd want for sleep support—across 166 servings with zero fillers or additives. Scoring 77/100, it's genuinely one of the best-value single-ingredient glycine supplements available in the UK market right now.”
What Do Reviewers Say About Bulk Glycine Powder?
Sample excerpts from currently available source material used in this product analysis.
"Good pre workout. I've been using this brand for a couple of years and I find it the most effective"
"Rich. New to pre workout supplements and I must say this stuff really works At first you’ll feel a tingling on your face and arms and that when it’s time to go to work The product also opens up airways making it easier to take deep breaths."
"Gain the most out of your supplements. This product is amazing for hair ,nails , skin and hood energy level"
"Love and recommend. Love the brand Wild nutrition! By women for women! And it really is an amazing product. So glad H&B stocks it!"
"Great!. A little disappointed with the customer service. However, the delivery was super quick and the product is great. Will definitely buy it again!"
How does Bulk Glycine Powder score?
Detailed score breakdown and key findings from our analysis of 27 reviews across 3 sources.
Pros
- +Clinical 3g serving matches research-backed dose for sleep quality improvement
- +100% pure glycine — zero fillers, flavourings, or additives
- +Excellent cost-per-serving: 166 servings at a competitive UK price
- +GMP certified and third-party tested; made in the UK with strong brand transparency
- +Widely recommended in Reddit sleep communities, often stacked with magnesium glycinate and l-theanine
Cons
- -Individual response varies significantly — some users report glycine as stimulating rather than sedating
- -At least one Reddit user reported anhedonia and worsened sleep at 3g daily; personal titration advised
- -No NSF or Informed Sport certification — relevant for competitive athletes
- -Prop 65 heavy-metal concerns raised by one user; COA should be requested for long-term high-dose use
Best For
Watch Out
- !Start at 1–2g to assess individual response before moving to the full 3g dose — glycine is calming for most but stimulating for some
- !Not suitable as a standalone sleep aid for everyone; works best as part of a broader sleep stack
- !Holland & Barrett reviews linked to this listing appear to describe unrelated products and should be treated with scepticism
- !Request the Certificate of Analysis if using long-term at high doses due to heavy metal concerns common with bulk amino acid powders
What is Bulk Glycine Powder?
Bulk Glycine Powder is a amino acids product by Bulk in powder form, scoring 77.0/100 on AIScored.
- • Bulk Glycine Powder is a pure, unflavoured glycine powder in a 500g pouch from one of the UK's leading sports nutrition retailers.
- • It is additive-free, mixes easily, and gives you flexible dosing to fit your routine.
- • Compared with NOW Foods, this option provides a slightly larger quantity while staying competitively priced in the UK.
- • It is popular with gym-goers for sleep recovery and is often used as an ingredient in homemade pre-sleep blends.
- • A simple choice for anyone who wants single-ingredient glycine without added flavourings.
What's Inside Bulk Glycine Powder?
Bulk Glycine Powder contains 1 active ingredient: Glycine.
Active Ingredients
- Glycine
- 3000mg
Clean Label Analysis
100% pure glycine with zero additives — identical purity to the NOW Foods version. Bulk wisely sets the serving size at 3g rather than 1g, matching the clinical dose for sleep.
Is Bulk Glycine Powder Independently Tested?
Third-Party Tested
This product has been independently tested by third-party laboratories for purity, potency, and safety.
Certifications
How We Score Supplements
Our methodology analyses review data, ingredient science, and product information, then scores each product on a 0-100 scale across evidence-based categories:
Effectiveness
How well the product delivers its claimed benefits, based on reviews and ingredient evidence.
Ingredient Quality
Bioavailable forms, clinically effective dosages, clean label, minimal fillers.
Value for Money
Price relative to ingredient quality, dosage count, and effectiveness.
Side Effects Profile
Higher score = fewer side effects. 100 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.
How Does Bulk Glycine Powder Compare?
See how this product stacks up against the top-rated amino acids in our database.
| Product | Score | Price |
|---|---|---|
| Bulk Glycine Powder (this) | 77.0 | £4.99 |
| BCAA Amino Hydrate Fruit Burst 450g | 80.0 | £20.00 |
Price History (90 days)
Quick Facts
- Form
- Powder
- Dose
- 3000mg glycine per serving
- Serving
- 3g (approx. 1 scoop)
- Servings
- 166
- Vegan
- Yes
- Made in
- UK
Frequently Asked Questions
Is Bulk Glycine Powder worth buying in 2026? ▼
What is the best price for Bulk Glycine Powder in the UK? ▼
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Is Bulk Glycine Powder third-party tested? ▼
How does Bulk Glycine Powder compare to BCAA Amino Hydrate Fruit Burst 450g? ▼
Disclaimer: AIScored provides research-backed 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.
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