L-Theanine is a naturally occurring amino acid that helps you feel calm, focused, and less stressed, without making you drowsy. It supports your brain by balancing mood-related chemicals like serotonin and dopamine, improving both relaxation and concentration. Plus, it enhances alpha brain waves, promoting a sense of calm alertness, so you can stay sharp and focused even during stressful moments.

L-Theanine offers a wide range of benefits, making it an excellent choice for those looking to enhance both mental and physical wellbeing:

• Stress Reduction: Studies have shown that L-Theanine can help reduce stress and anxiety. Research published in Nutrients (2019) demonstrated that L-Theanine intake significantly reduced stress-related symptoms.
• Improved Cognitive Function: A study in the Journal of Medicinal Food (2021) found that L-Theanine improves attention, memory and executive function, making it a great option for boosting mental acuity.
• Elevated Mood: A systematic review and meta-analysis in Nutrition Reviews (2014) found evidence that L-Theanine positively influenced mood, improving alertness, calmness and contentedness.
• Better Sleep Quality: If you struggle with sleep issues, L-Theanine can help you wind down and fall asleep faster. A systematic review and meta-analysis published in Sleep Medicine Reviews (2025) found that L-Theanine improved sleep quality, reduced time to fall asleep and improved daytime wakefulness.
• Antioxidant Support: Research in Toxicology and Applied Pharmacology (2024) found that L-Theanine has antioxidant properties that protect cells from oxidative stress and free radical damage.
• Works together with caffeine: L-Theanine works synergistically with caffeine, improving cognitive performance, reducing caffeine-induced jitters and preventing an energy crash. Studies in Nutritional Neuroscience (2008) and the Journal of the International Society of Sports Nutrition (2023) confirmed this powerful combination for sustained focus and energy, with greater cognitive benefits than caffeine alone.

These benefits make L-Theanine a valuable addition to your daily routine for stress reduction, cognitive enhancement and overall wellbeing.

At Everyday Supplements, we know that when it comes to supplements, quality and purity matter most. That's why we rigorously test every batch of our products in ISO 17025 accredited third party labs for purity, heavy metals, and microbiology. Our L-Theanine is over 99% pure, with no unnecessary fillers or additives.

For your peace of mind, you can easily verify the quality yourself by accessing the lab reports on our website using the batch number located on the bottom of your packaging.

All of our packaging is plastic-free and thoughtfully designed with sustainability in mind:

• Supplement Packaging: Made from FSC-certified, food-grade kraft paper and greyboard, it's fully recyclable, giving you peace of mind about its environmental impact.
• Shipping Packaging: Our shipping boxes are made from FSC-certified cardboard, which is both compostable and recyclable, ensuring your order arrives sustainably.
• Recyclable Seal: The packaging seal is made from recyclable aluminium, which be recycled indefinitely, keeping everything secure without plastic waste.
• Moisture Control Sachet: The eco-friendly Dri Clay® sachets utilise naturally occurring bentonite clay which has excellent moisture absorbing properties. The clay is contained within a biodegradable FSC-certified Kraft paper sachet, making the desiccant completely non-toxic.

By choosing Everyday Supplements, you're not only supporting your own wellbeing, you’re also helping reduce waste and contributing to a more sustainable future.

Absolutely! Our thoughtfully designed, letterbox-friendly packaging makes receiving your L-Theanine supplements hassle-free, even when you're not at home. No need to wait around for deliveries or deal with missed packages. Your order will fit right through your letterbox, ready and waiting when you get back.

Yes, our capsules are made from hydroxypropyl methylcellulose (HPMC), a plant-based material derived from wood pulp. They’re completely vegan, clear, and tasteless, offering a clean and easy way to take your supplements without any unwanted flavors or additives.