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Pure Lab Vitamins L-Theanine 250 mg provides a clinically studied amino acid derived from green tea that helps promote relaxation while maintaining mental clarity and focus. L-theanine was first identified in green tea in 1949 and has since been widely studied for its ability to help calm the mind without causing drowsiness.
This unique amino acid works by supporting key neurotransmitters in the brain that regulate mood, stress response, and relaxation. L-theanine helps reduce feelings of nervousness and restlessness while promoting a calm, focused mental state. It is particularly beneficial for individuals experiencing stress, stress-induced anxiety, or difficulty concentrating during demanding situations.
Unlike many calming supplements, L-theanine promotes relaxation without sedation. It supports mental clarity and alertness, making it suitable for daytime use or during periods of mental strain. After consumption, L-theanine typically reaches circulation and the brain within 30 to 40 minutes, helping calm racing thoughts while supporting improved concentration.
• Helps promote relaxation without causing drowsiness
• Helps reduce nervousness and stress-related tension
• Supports focus and mental clarity during stressful situations
• Helps calm racing thoughts and restlessness
• Fast-acting formula that reaches the brain within 30–40 minutes
• Suitable for daytime stress support or focus
• Vegan, gluten free, and preservative free
• Canadian owned brand
Medicinal Ingredients (per capsule)
L-Theanine – 250 mg
Non-Medicinal Ingredients
Vegetable capsule, Cellulose, Magnesium Stearate (vegetable source).
Helps promote relaxation and reduce nervousness during times of stress.
Adults: Take as directed by a healthcare practitioner.
Gluten, wheat, sugar, yeast, milk, egg, shellfish, soy, corn, or preservatives. Suitable for vegans.
Each capsule contains:
L-theanine 250mg
100% vegetarian capsule, Cellulose, Magnesium Stearate (veg.)
sugar, yeast, wheat, gluten, milk, egg, shellfish or preservatives.
Nature's Source is committed to ensuring the complete and absolute accuracy of product images and information on our website. However, please be aware that there may be pending updates to packaging or ingredients due to manufacturing changes.
Occasionally, some items may be shipped with alternate packaging that has been recently updated by the supplier or manufacturer. It's important to note that while packaging may change, the ingredients usually remain the same. We always advise you to read labels, warnings, and product directions before use. Please do not solely rely on the information provided by Nature's Source.
Our probiotics are stored in our warehouse under refrigeration to guarantee quality and maintain optimal potency. Additionally, we include a FREE ice pack with probiotic shipments. Although the product may not arrive cold, the ice pack helps in preserving a cooler temperature during transit. We recommend taking into account potential weekend or holiday delays when placing your order. For example, it's best to order on a weekday and avoid ordering on Fridays, Saturdays, or during holidays
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