L-Theanine by SFI Health – Relaxation Support with L-Theanine Capsules
L-Theanine capsules by SFI Health provide an amino acid supplement for relaxation and occasional stress support. Each vegan capsule supplies 100 mg of Suntheanine®, a pure L-theanine ingredient rather than a whole green tea extract.
The 60-capsule bottle offers a single-ingredient approach for people comparing calm-support formulas. L-theanine is the only active ingredient listed in the Supplement Facts, so this is not a combination of herbs, melatonin, and amino acids. Its vegetarian capsule shell is made with hydroxypropyl methylcellulose and water, rather than gelatin.
Key L-Theanine Benefits
- Promotes a calm, relaxed mental state when everyday demands leave you feeling keyed up, supporting a more balanced approach to busy days.
- Helps manage occasional stress while supporting alert relaxation, making the focus daytime calm rather than a sleep-inducing effect.
- Supports a healthy mood as part of a routine that also includes adequate rest, balanced nutrition, and time to unwind.
How L-Theanine Works
L-theanine is an amino acid naturally found in green tea that can reach the brain. Its role in alpha brain-wave activity supports relaxed alertness: a calm mental state while remaining awake. This formula provides L-theanine on its own rather than pairing it with other active ingredients.
Alpha waves describe a pattern of electrical activity in the brain, not an added ingredient in the capsule. Relaxed alertness means being calm while awake; it is different from feeling stimulated or intentionally preparing for sleep. Here, the focus is daytime relaxation support from purified L-theanine, rather than the broader mixture of compounds found in a tea extract.
Key Functional Ingredients Include:
- L-Theanine: Supports relaxation through its influence on alpha brain-wave activity, the rhythm associated with a calm, awake mind. This helps explain its role in daytime relaxation rather than stimulation. Combining L-theanine with sedatives or sleep medicines can increase drowsiness.
L-Theanine Is Formulated For
- Adults looking for support with occasional stress and daytime calm.
- People who prefer a single active ingredient rather than a multi-ingredient blend.
- Those seeking vegan capsules made without the common allergens specified in the manufacturer's statement.
Supplements support your health but do not replace a balanced diet. Always check with your healthcare practitioner if you have doubts about a new supplement. Or you may book a FREE product consultation with Holistic Health Partners, led by Carolyn Mulally BS, RN, HN-BC. You may also wish to explore our other Stress Products and Supplements, Mood Support Supplements, and Amino Acids Supplements collections.
Recommendation: Adults: 1 capsule, 1 to 2 times daily or as directed by a healthcare professional. Children: As directed by a healthcare professional.
Serving Size: 1 Capsule
Servings Per Container: Not stated on the manufacturer's label
L-Theanine‡ ... 100 mg
* Daily value not established
‡Suntheanine® is a registered trademark of Taiyo International, Inc.
Other Ingredients: Microcrystalline cellulose, vegetarian capsule (hydroxypropyl methylcellulose, water), ascorbyl palmitate, and silicon dioxide.
Does Not Contain: Made without common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, soybeans, and sesame. Non-GMO, Vegan, No synthetic colors or flavors.
Frequently Asked Questions About L-Theanine
What are the benefits of L-Theanine?
L-Theanine supports relaxation, a healthy mood, and the management of occasional stress. SFI Health uses Suntheanine, a pure form of this amino acid, for a focused approach to calm rather than a multi-ingredient relaxation blend. Each vegan capsule supplies 100 mg of L-theanine as the sole active ingredient. Its emphasis is relaxed alertness: feeling calm while remaining awake, rather than seeking a stimulating effect. The ingredient list does not include melatonin or a blend of calming herbs.
Who should take L-Theanine?
L-Theanine is an option for adults seeking support for occasional stress and daytime relaxation who prefer one active ingredient rather than a blended formula. SFI Health supplies it in vegan capsules made without the common allergens named in the manufacturer's statement, including milk/casein, eggs, wheat, gluten, soybeans, and sesame. Review the full ingredient list if you have allergies. Children should use it only as directed by a healthcare professional; the manufacturer also calls for physician consultation for anyone under 18.
Are there any side effects of taking L-Theanine?
L-theanine can increase drowsiness when combined with sleep medicines or sedatives, so review combinations with your healthcare provider. Do not use this formula if you are allergic to any ingredient. Consult with your physician if you are pregnant or nursing, or have any medical condition, or taking prescription drugs, or under the age of 18 years. KEEP OUT OF REACH OF CHILDREN.
How does L-Theanine support overall health?
L-Theanine supports a relaxed yet alert mental state, helping make calm part of an everyday wellness routine. It influences alpha brain-wave activity, a rhythm associated with a calm, awake mind. SFI Health provides this amino acid on its own as Suntheanine rather than combining it with other active ingredients. This focused formula complements regular meals, restful sleep, and stress-management practices; it does not replace them. Review any combination with sedatives or sleep medicines with your healthcare provider because drowsiness can increase.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
