Nutricost Caffeine with L-Theanine Supplement 100mg of Each 240 Capsules
Analysis updated July 2026 · How Scout scores
At a glance
Summary
This supplement contains caffeine and L-theanine, which are known for their synergistic effects on focus and relaxation. However, the presence of several additives such as microcrystalline cellulose, magnesium stearate, and silicon dioxide, while common in supplements, slightly detracts from its overall purity. The formulation lacks harmful substances but could be improved by reducing the number of non-active ingredients.
Key ingredients 5
rice flourNeutral
Rice flour is used as a filler and carrier in supplements, providing bulk without adding significant nutritional value.
See more about rice flour →gelatin capsuleNeutral
Gelatin capsules are common for encapsulating ingredients, offering a convenient and stable delivery method without affecting health negatively.
See more about gelatin capsule →microcrystalline celluloseNeutral
Microcrystalline cellulose is a plant-derived filler and binder, widely used in supplements for its inert properties.
See more about microcrystalline cellulose →magnesium stearate (vegetable source)Neutral
Magnesium stearate acts as a flow agent to prevent ingredients from sticking during manufacturing, with no known adverse effects when used in small amounts.
silicon dioxideNeutral
Silicon dioxide is used as an anti-caking agent to ensure powder flow and stability in the supplement capsule.
See more about silicon dioxide →Processing
Processed Foods
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