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Orders are prepared in 1–3 business days and arrive 3–7 business days after they ship. Alaska, Hawaii, Puerto Rico, U.S. territories and APO/FPO/DPO addresses can take longer. You get a tracking number by email as soon as your order ships.
Free returns within 30 days of delivery: we email you a prepaid return label, no reason needed. Items must be unopened, with the manufacturer or tamper-evident seal intact, in their original packaging. Opened, used or partially consumed vitamins, minerals and supplements, items with broken or missing seals, and gift cards can't be returned. Damaged, defective, incorrect or expired items are always covered. Refunds go back to your original payment method within 10 business days of approval.
If you have a question about an item, its label or your order, email sales@naturalvitaminsonline.com with the product name or order number. We answer every message by email and reply within 1 business day (Monday to Friday, Eastern Time).
Talk to your doctor or pharmacist before starting a supplement, especially if you're pregnant or nursing, take medication, or have a medical condition.
†These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
Talk to your doctor or pharmacist before starting a supplement, especially if you're pregnant or nursing, take medication, or have a medical condition.
Source Naturals Serene Science® L-Theanine is a 120-capsule formula designed to support calm focus, with 200 mg of L-theanine.
When you want support for both a calm state of mind and concentration, the intended benefits of a formula matter. Source Naturals Serene Science® L-Theanine is made for that combination: calm without drowsiness, with support for attention and focus. Its stated purpose also includes helping to ease aspects of occasional nervousness and tension. These are support claims, not a promise of a particular result, and the product is not presented as a treatment for a medical condition.
It is formulated to support a calm mind, focused attention, and concentration without causing drowsiness. It may also help ease aspects of occasional nervousness and tension. This makes the product relevant to people looking for support that brings calm and focus together, rather than a formula whose stated purpose is drowsiness.
The package contains 120 capsules and the formula provides 200 mg of L-theanine. These details help clarify both the product format and the amount of its named ingredient. No serving directions are provided here, so this description does not assign a daily intake or suggest how often to take it.
It is manufactured in the USA, in Scots Valley, California, under the Good Manufacturing Practices established by the US Food and Drug Administration (FDA). The manufacturing location and stated practices are useful details for shoppers comparing where and how a supplement is made.
Source Naturals Serene Science® L-Theanine is suited to adults seeking a capsule formula intended to support calm focus, with additional support for occasional nervousness and tension. Its stated purpose is support for calm and concentration without drowsiness, and the package contains 120 capsules formulated with 200 mg of L-theanine.
L-Theanine (Suntheanine®)
Q: What is Source Naturals Serene Science® L-Theanine designed to support?
A: Source Naturals Serene Science® L-Theanine is formulated to support a calm mind, focused attention, and concentration without drowsiness. It may also help ease aspects of occasional nervousness and tension.
Q: Where is Source Naturals Serene Science® L-Theanine manufactured?
A: Source Naturals Serene Science® L-Theanine is manufactured in the USA, in Scots Valley, California, under FDA-established Good Manufacturing Practices.
Free standard shipping on every order to U.S. addresses, with no minimum. Orders are prepared in 1–3 business days and arrive 3–7 business days after they ship. Alaska, Hawaii, Puerto Rico, U.S. territories and APO/FPO/DPO addresses can take longer. You get a tracking number by email as soon as your order ships. See shipping details.
Free returns within 30 days of delivery. Free returns within 30 days of delivery: we email you a prepaid return label, no reason needed. Items must be unopened, with the manufacturer or tamper-evident seal intact, in their original packaging. Opened, used or partially consumed vitamins, minerals and supplements, items with broken or missing seals, and gift cards can't be returned. Damaged, defective, incorrect or expired items are always covered. Refunds go back to your original payment method within 10 business days of approval. See returns & refunds.
Damaged, defective, incorrect or expired item? Email your order number, a photo and the lot/expiration details to sales@naturalvitaminsonline.com and we will arrange a replacement or refund; this is always covered. Please report visible shipping damage within 7 days of delivery.
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