Swanson Suntheanine L-Theanine is a dietary supplement featuring the unique amino acid L-theanine (Suntheanine®), delivering 100 mg per vegetarian capsule with 60 capsules per bottle. L-theanine has been extensively studied and is shown to promote a sense of relaxation without drowsiness.
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Description
Swanson Suntheanine L-Theanine is a dietary supplement featuring the unique amino acid L-theanine (Suntheanine®), delivering 100 mg per vegetarian capsule with 60 capsules per bottle. L-theanine has been extensively studied and is shown to promote a sense of relaxation without drowsiness.
Benefits
Suntheanine L-Theanine supports balanced mental and emotional wellbeing, helping maintain a calm state while remaining alert and focused.
Suggested Use
Ingredients
Suntheanine® L-Theanine — 100 mg; Other ingredients: Brown rice flour, hypromellose (vegetarian capsule), magnesium stearate.
Warnings
Product Information
Delivery - terms and prices
After placing an order, delivery is processed on business days. Package design and product images may differ. Delivery time depends on the selected method - on average up to 5 days.
International Omniva post - from 7 € (price depends on parcel weight). For other options (DPD, FedEx), standard rates and transit times apply.
In addition to the thresholds listed above, we can consider free delivery options depending on the order amount and for deliveries to other countries. Contact us and we will suggest the best option.
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On average - up to 5 business days (depends on the selected delivery method).
Loyalty program - 5% cashback on purchases
Registered customers receive 5% cashback on purchases. Bonus points are credited automatically and can be used to pay for future orders.
1) Register on the website - create an account to participate in the program.
Log into your account - bonuses are credited only to logged-in users.
Make purchases - cashback is credited automatically after invoice creation.
Swanson Suntheanine L-Theanine 100 mg is a food supplement for people who want to feel calmer without becoming sleepy. L-theanine is an amino acid best known from tea leaves, where it is associated with a clear, settled state of mind. Many people choose this type of supplement during tense work periods, before demanding study sessions, or in the evening when they want to unwind but still stay mentally present.
Its effect is not the same as a sedative. In simple terms, L-theanine is valued because it can help the brain shift away from an overstimulated, “always on” mode while preserving attention. That is why it is often used when a person feels mentally crowded, distracted or internally restless, yet still needs focus. This makes it different from ingredients that are mainly taken for sleepiness.
What makes this product notable is the use of Suntheanine®, a branded form of L-theanine produced for purity and consistency. For many shoppers, the form matters: not all amino acid supplements are equally standardised, and Suntheanine® is the version most often mentioned in discussions around calm alertness. The 100 mg strength in vegetarian capsules is a practical option for those who prefer a moderate amount that can fit easily into a busy schedule.
Swanson L-theanine may suit adults who want a gentler way to ease into a more balanced mental state—for example before presentations, during intensive screen-based work, while travelling, or as part of an evening wind-down. It can also be of interest to people who are sensitive to stimulants and want something that encourages relaxation without heaviness.
As with any supplement affecting mood or the nervous system, it is wise to use it thoughtfully. If you are pregnant, breastfeeding, taking medication, or managing an ongoing health condition, speak with a healthcare professional before use. If you are looking for a product specifically for persistent sleep problems, strong anxiety or low mood, a more individual approach is important.
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