Natural Factors - Stress-Relax Suntheanine - 60 Chewable Tablets

Pure L-Theanine for Calm Focus and Mental Clarity

Natural Factors Stress-Relax Suntheanine delivers 100 mg of Suntheanine—the patented, clinically studied form of L-theanine that promotes relaxation without drowsiness. L-theanine is an amino acid naturally found in green tea that supports calm alertness, mental clarity, and stress relief. Suntheanine is the only pure form of L-theanine protected by over 40 U.S. and international patents and supported by rigorous scientific research demonstrating its ability to reduce stress, enhance focus, and support healthy sleep quality.

Key Benefits

• 100 mg of Suntheanine per tablet – The gold standard in L-theanine with over 50 published studies supporting safety and efficacy
• Promotes calm alertness – Helps you stay relaxed and focused without sedation or mental fog
• Supports alpha brain wave activity – Encourages the relaxed yet alert mental state associated with meditation and creative flow
• Helps manage occasional stress – Supports a healthy response to everyday stressors without affecting energy levels
• Enhances focus and concentration – Improves attention and cognitive performance during demanding tasks
• Supports restful sleep – Promotes relaxation before bed without next-day grogginess
• Delicious tropical fruit flavor – Fast-dissolving chewable tablets with no water needed
• 60 tablets – Two-month supply for daily stress management and focus support

What is Suntheanine?

Suntheanine is a patented, pure form of L-theanine produced through a proprietary enzymatic process that mirrors the natural production of L-theanine in tea leaves. Unlike lower-quality L-theanine supplements that may contain D-theanine (an inactive form), Suntheanine is 100% pure L-isomer—the only form shown to cross the blood-brain barrier and deliver therapeutic benefits. This pharmaceutical-grade purity ensures consistent, reliable results with every dose.

The Science of Calm Focus

L-theanine works by influencing brain chemistry in several beneficial ways. It increases alpha brain wave activity—the brain state associated with wakeful relaxation and creative thinking—while also modulating neurotransmitters including GABA, dopamine, and serotonin. This unique mechanism allows Suntheanine to promote relaxation and reduce stress without causing drowsiness, making it ideal for daytime use when you need to stay calm and focused.

Who It's For

Stress-Relax Suntheanine is ideal for adults seeking to manage occasional stress, improve focus during demanding tasks, or support restful sleep without next-day grogginess. It's a favorite among students, professionals, and anyone looking to maintain calm clarity throughout the day. The chewable format makes it perfect for on-the-go stress relief—no water needed.

Suggested Use

Chew 1–2 tablets 1–2 times daily, or as directed by a healthcare practitioner. May be taken anytime—morning for focus, afternoon for stress relief, or evening to support relaxation before bed. For acute stress, take as needed.

About Natural Factors

Natural Factors has been a trusted leader in science-backed nutritional supplements for over 60 years, combining rigorous quality standards with sustainably sourced ingredients. Every product is third-party tested to ensure purity, potency, and safety.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.