Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free vs Jarrow Formulas Taurine 1000mg Capsules 100 Count

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free and Jarrow Formulas Taurine 1000mg Capsules 100 Count.

Last verified: 07 Apr 2026 · Based on 27 reviews

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76.0

Quick Answer

Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free scores 76.0/100 vs Jarrow Formulas Taurine 1000mg Capsules 100 Count at 75.0/100. Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free wins on effectiveness. Jarrow Formulas Taurine 1000mg Capsules 100 Count is stronger on ingredient quality and value for money.

How Do the Scores Compare?

Nutricost L-Theanine 200mg,...

Jarrow Formulas Taurine 100...

	Nutricost L-Theanine 200mg,... Nutricost	Jarrow Formulas Taurine 100... Jarrow Formulas
Overall Score	76.0	75.0
Effectiveness	82.0/100 Best	70.0/100
Ingredient Quality	75.0/100	82.0/100 Best
Value for Money	62.0/100	78.0/100 Best
Side Effects	90.0/100 Best	90.0/100 Best
Certifications	58.0/100	68.0/100 Best
Best Price	£7.84 Amazon UK → Cheapest	£18.77 Amazon UK →
Price per Serving	£7.84 1 servings	N/A
Form	Capsule	N/A
Dose	2.2 Ounces	N/A
Third-Party Tested	✗ No	✗ No
Reviews Analysed	16	11

Nutricost L-Theanine 200mg, 120 ...

Pros

✓Strong anxiety and stress reduction reported across the majority of reviews
✓Highly effective for smoothing caffeine jitters and improving focus quality
✓Notable sleep improvement, especially when combined with magnesium glycinate
✓Well-tolerated with no side effects reported across all 12 reviews

Cons

✗Price flagged as expensive relative to equivalent products on the market
✗Sleep benefits may take 4–6 weeks to fully manifest for some users
✗Third-party testing claimed in marketing copy but contradicted by product specs
✗Not vegan — capsule shell may contain gelatin

Best For

Coffee and pre-workout users seeking to eliminate jitters Light sleepers or those with difficulty switching off at night People managing mild to moderate daily anxiety or stress Nootropic stackers looking for a clean calming base Anyone sensitive to sedating sleep aids who wants a gentler alternative

Amazon UK £7.84

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Jarrow Formulas Taurine 1000mg C...

Pros

✓Well-researched amino acid with broad cardiovascular and neurological evidence base
✓Reputable brand with high GMP manufacturing standards
✓1000mg dose aligns with doses used in clinical research
✓Excellent tolerability — taurine is among the safest amino acid supplements

Cons

✗Effects are often subtle and may take weeks to become noticeable
✗Not suitable for those who prefer powder form for flexible dosing
✗Limited UK user review data makes real-world performance harder to assess
✗Capsule shell may be large for those with swallowing difficulties

Best For

cardiovascular health support athletes seeking recovery and endurance benefits over 50s concerned with heart and eye health those with high blood pressure or metabolic concerns people supplementing for neurological or mood support

Amazon UK £18.77

View full review →

What does the data say about Nutricost L-Theanine 2... vs Jarrow Formulas Taurin...?

Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free Winner 76.0/100

Nutricost L-Theanine 200mg is a well-dosed amino acid supplement backed by a strong body of research supporting its calming, focus-enhancing effects.

Effectiveness

Nutricost L-Thea..

82.0/100

Jarrow Formulas ..

70.0/100

Ingredient Quality

Nutricost L-Thea..

75.0/100

Jarrow Formulas ..

82.0/100

Value for Money

Nutricost L-Thea..

62.0/100

Jarrow Formulas ..

78.0/100

Side Effects

Nutricost L-Thea..

90.0/100

Jarrow Formulas ..

90.0/100

Certifications

Nutricost L-Thea..

58.0/100

Jarrow Formulas ..

68.0/100

What are the key differences?

Nutricost L-Theanine 20.. is best for: Coffee and pre-workout users seeking to eliminate jitters, Light sleepers or those with difficulty switching off at night

Jarrow Formulas Taurine.. is best for: cardiovascular health support, athletes seeking recovery and endurance benefits

Frequently Asked Questions

Which is better, Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free or Jarrow Formulas Taurine 1000mg Capsules 100 Count? ▼

Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free scores 76.0/100 overall while Jarrow Formulas Taurine 1000mg Capsules 100 Count scores 75.0/100. Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free comes out ahead, scoring higher on effectiveness (82.0 vs 70.0). Nutricost L-Theanine 200mg, 12 is best suited for Coffee and pre-workout users seeking to eliminate jitters and Light sleepers or those with difficulty switching off at night. Jarrow Formulas Taurine 1000mg is better for cardiovascular health support and athletes seeking recovery and endurance benefits.

Is Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free worth the price compared to Jarrow Formulas Taurine 1000mg Capsules 100 Count? ▼

Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free costs £7.84 while Jarrow Formulas Taurine 1000mg Capsules 100 Count is £18.77. For value, Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free scores 62.0/100 vs Jarrow Formulas Taurine 1000mg Capsules 100 Count's 78.0/100. Jarrow Formulas Taurine 1000mg Capsules 100 Count delivers better value relative to its quality.

Which has fewer side effects? ▼

Nutricost L-Theanine 200mg, 120 Capsules, Double Strength - Non-GMO, Gluten Free scores 90.0/100 for side effects (higher means fewer reported issues) while Jarrow Formulas Taurine 1000mg Capsules 100 Count scores 90.0/100. Both have similar side effect profiles based on user reviews. For certification and testing, Nutricost L-Theanine scores 58.0/100 vs Jarrow Formulas Taur's 68.0/100. Always consult a healthcare professional before starting any supplement.

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

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