NOW Foods L-Theanine 200mg vs Bulk Glycine Powder

Side-by-side AI analysis based on real user reviews from Reddit, Amazon, YouTube & more.

Score Comparison

NOW Foods L-Theanine 200mg
Bulk Glycine Powder
NOW Foods L-Theanine 200mg
NOW Foods
Bulk Glycine Powder
Bulk
Overall Score 8 8
Effectiveness 7/10 8/10
Best
Ingredient Quality 9/10
Best
 9/10
Best
Value for Money 9/10 10/10
Best
Side Effects 10/10
Best
 10/10
Best
Certifications 7/10
Best
 5/10
Best Price £23.80 £4.99
Cheapest
Form Capsules Powder
Dose 200mg L-theanine 3000mg glycine per serving
Third-Party Tested ✓ Yes ✓ Yes
Reviews Analysed 3 2

NOW Foods L-Theanine 200mg

Pros

  • +Patented Suntheanine for verified L-isomer purity
  • +120 capsules — four months' supply
  • +Includes 100mg inositol as a bonus ingredient
  • +Clinical 200mg dose per capsule

Cons

  • -Standard NOW Foods filler profile
  • -Effects are subtle — not a strong anxiolytic
  • -Some users report no noticeable benefit

Best For

Caffeine stacking for focused productivity Mild anxiety and stress relief
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Bulk Glycine Powder

Pros

  • +Cheapest pure glycine available in the UK
  • +500g pouch — over five months at 3g per day
  • +Clinical 3g serving size on the label
  • +UK manufactured with zero additives

Cons

  • -Pouch packaging less convenient than a tub
  • -Only GMP certified — fewer certifications than NOW Foods
  • -No scoop included — need to weigh or estimate

Best For

Budget sleep supplementation UK buyers wanting domestic production
View full review →
AI

AI Comparison Analysis

NOW Foods L-Theanine 200mg vs Bulk Glycine Powder

NOW Foods L-Theanine 200mg: NOW Foods L-Theanine is arguably the best value L-theanine product for UK consumers. The use of patented Suntheanine ensures pure L-isomer content, which is the bioactive form. 120 capsules at 200mg matches the clinical dose and provides a four-month supply. The bonus inositol adds complementary calming effects. A staple recommendation in the nootropics community for good reason.

Scores: effectiveness: 7/10, ingredient_quality: 9/10, value_for_money: 9/10, side_effects: 10/10, certifications: 7/10, overall: 8/10

Bulk Glycine Powder: Bulk's Glycine Powder offers the same pure amino acid as NOW Foods in a larger 500g quantity at a lower UK price. The sensible 3g serving size matches the clinical dose, unlike NOW's 1g label serving. Quality is comparable — pure glycine is pure glycine regardless of brand. The main advantage is price; the main disadvantage is the pouch packaging versus a rigid tub.

Scores: effectiveness: 8/10, ingredient_quality: 9/10, value_for_money: 10/10, side_effects: 10/10, certifications: 5/10, overall: 8/10

Disclaimer: AIScored provides AI-generated comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.