Reviews / Oxin Nutrition L Theanine 100mg Capsules Pure Series 60 Vegetable Capsules

Oxin Nutrition L Theanine 100mg Capsules Pure Series 60 Vegetable Capsules

Evidence-based supplement analysis

Reviewed on 9 Mar 2026

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NootropicsCapsule·3 min read·Updated March 2026

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7.8/10
Recommended
MRP ₹2999Cost ₹4.5860 servings
Oxin Nutrition L Theanine 100mg Capsules Pure Series 60 Vegetable Capsules
7.8/10
Recommended

Oxin Nutrition L Theanine offers 100mg of pure L-theanine per capsule with perfect transparency and formula quality, ideal for stacking or beginners testing tolerance. However, at ₹49.98 per serving—57% above category average—the value proposition is weak, especially since effective doses often require 2-4 capsules. Recommended for purity-focused users willing to pay premium prices, but budget-conscious consumers should look elsewhere.

Formula10.0
Dosing7.0
Value3.3
Transparency10.0

MRP

₹2999

Based on MRP. Actual price may be lower.

Cost/Serving

₹4.58

Based on MRP. Actual price may be lower.

Servings

60

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THE BOTTOM LINE

Oxin Nutrition delivers exactly what it promises: 100mg of pure L-theanine per capsule with complete transparency and no fillers. The formula scores a perfect 10 for its singular focus and clean ingredient profile, making it ideal for users who want control over their nootropic stack or prefer to adjust their theanine intake independently.

At ₹49.98 per serving, this product costs 57% more than the nootropics category average of ₹31.87. While the formula quality justifies some premium, the value score of 3.3 reflects the steep price for a single-ingredient product. It suits consumers prioritizing purity and flexibility over budget, particularly those stacking L-theanine with caffeine or other nootropics.

FORMULA

The formula is straightforward and exemplary: 100mg of L-theanine per vegetable capsule with no additional ingredients mentioned. L-theanine is a well-researched amino acid found naturally in green tea, known for promoting relaxation without sedation and reducing caffeine jitters when paired with stimulants. The single-ingredient approach earns a perfect formula score because it eliminates unnecessary fillers, allows precise dosing control, and enables users to customize their nootropic regimen. For a category often cluttered with proprietary blends and undisclosed ratios, this transparency is refreshing.

DOSING VERDICT

The 100mg dose per capsule falls within the clinically studied range but sits at the lower end. Research on L-theanine typically uses doses between 100-400mg depending on the desired effect. For general relaxation and focus enhancement, 100-200mg is common, while anxiety reduction and deeper calm often require 200-400mg. This product delivers the minimum effective dose, which explains the dosing score of 7.0. Users seeking stronger effects will need to take 2-4 capsules, which is feasible but increases the already high per-serving cost. The moderate dose works well for beginners or those stacking with 100-200mg of caffeine (the classic 1:2 ratio).

VALUE

At ₹49.98 per 100mg serving, Oxin Nutrition charges a significant premium. The product costs 57% above the nootropics category average of ₹31.87 per serving, earning it a value score of just 3.3. For a single-ingredient supplement, this pricing is difficult to justify, especially considering users may need multiple capsules to reach clinical thresholds. A 60-capsule bottle at ₹2,999 provides only 15-30 days of supply if dosed at the more effective 200-400mg range. The purity and transparency are commendable, but budget-conscious consumers will find better value elsewhere in the market.

TRANSPARENCY

Transparency is flawless here, earning a perfect 10.0. The label clearly states 100mg of L-theanine per capsule with no proprietary blends, hidden ingredients, or ambiguous "complexes." The product name itself specifies the exact dose, and the use of vegetable capsules signals attention to dietary preferences. There's no mention of third-party testing in the provided data, but the straightforward labeling and single-ingredient formula leave little room for deception. This level of clarity allows informed decision-making and accurate dosing.

WHO SHOULD BUY / WHO SHOULD SKIP

Buy if

  • Nootropic stackers who want precise control over L-theanine dosing to pair with their caffeine intake (coffee, pre-workout, or standalone caffeine pills)
  • Beginners to L-theanine testing tolerance with a moderate 100mg dose before scaling up to higher amounts
  • Purity-focused consumers willing to pay premium prices for a clean, single-ingredient formula with vegetable capsules

Skip if

  • Budget-conscious buyers who need effective doses (200-400mg) but can't justify spending ₹100-200 per day on a single amino acid
  • Those seeking stronger effects who require 300-400mg doses and would exhaust a 60-capsule bottle in just 15 days
  • Value seekers who can find L-theanine products at or below the ₹31.87 category average without sacrificing quality
Final Word

Oxin Nutrition's L-theanine delivers on purity and transparency with a clinically viable dose, making it a solid choice for nootropic enthusiasts who prioritize formula integrity. However, the premium pricing limits its appeal to those who can justify spending nearly 60% more than category average for single-ingredient simplicity.

How It Compares

Oxin Nutrition L Theanine scores 7.8, lower than The Body Reserve L-Theanine's perfect 10.0 and Pure Nutrition L-Theanine's 9.3. Despite its high transparency score of 10.0, Oxin Nutrition's value score of 3.3 is significantly lower than competitors, with The Body Reserve at 10.0. Oxin Nutrition's cost per serving of ₹4.58 is more affordable than Trexgenics L-THEANINE's ₹8.00 but higher than The Body Reserve's ₹4.16. With only 100 mg of L-Theanine per capsule, it offers half the dosage of both Pure Nutrition and Trexgenics, each at 200 mg.

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ProductScoreCost/ServingKey AdvantageKey Weakness
Oxin Nutrition L Theanine (this product)7.8/10₹4.58High transparency scoreLow value score
The Body Reserve L-Theanine10.0/10₹4.16Perfect overall scoreNone
Pure Nutrition L-Theanine9.3/10₹5.83Optimal dosingHigher cost/serving
Trexgenics L-THEANINE 200 mg9.2/10₹8.00Double strengthHigh cost/serving

Ingredients

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IngredientDose per serving
L-Theanine100 mg

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