Skip to product information
1 of 8

Low Cost PH

USA Supplements | Doctor's Best, L-Theanine ( Promotes Calm Relaxation )

USA Supplements | Doctor's Best, L-Theanine ( Promotes Calm Relaxation )

Regular price ₱3,259.00
Regular price ₱3,504.00 Sale price ₱3,259.00
Sale Sold out
🧠 Doctor’s Best L-Theanine (with Suntheanine®) – Overview

Doctor’s Best L-Theanine with Suntheanine® 150 mg is a dietary supplement that contains L-theanine, an amino acid naturally found in green tea. It is commonly used to promote relaxation, calm focus, and stress reduction without causing drowsiness.

Suntheanine® is a patented, purified form of L-theanine known for consistent quality and potency.

🌿 Potential Benefits

People typically take L-theanine for:

😌 Relaxation without sedation

🧠 Improved focus and mental clarity

😓 Reduced stress and anxiety

😊 Better mood support

🌙 Improved sleep quality

L-theanine works by influencing brain chemicals such as GABA, serotonin, and dopamine, helping the brain stay calm while remaining alert.

💊 Typical Dosage

150 mg per capsule

Common recommendation: 1 capsule daily

Research-based usage ranges:

100–200 mg for relaxation or focus

Up to 400 mg/day in divided doses if needed

⏱️ How Fast It Works

Usually begins working within 30–60 minutes

Effects may last around 4–8 hours

⚠️ Possible Side Effects

L-theanine is generally well tolerated, but some people may experience:

Mild headache

Dizziness

Stomach discomfort

Slight lowering of blood pressure

People taking blood pressure medication, antidepressants, or anti-anxiety medication should consult a doctor first.

👍 Common Ways People Use It

☕ With coffee to reduce caffeine jitters

📚 Before studying or working for calm focus

🌙 Before bed to relax and improve sleep

🧠 1. Promotes Calm Relaxation

Helps reduce stress and anxiety

Creates a calm mental state without making you sleepy

Often used during stressful work or study periods

🎯 2. Improves Focus and Mental Clarity

Supports attention and concentration

Helps maintain clear thinking

Frequently combined with caffeine to produce calm alertness (focus without jitters)

😌 3. Reduces Anxiety Symptoms

Helps lower mental tension and nervousness

May reduce symptoms like racing thoughts and restlessness

🌙 4. Supports Better Sleep

Helps you relax before bedtime

May improve sleep quality (not a sedative but calming)

☕ 5. Reduces Caffeine Jitters

When taken with coffee, it can:

Reduce caffeine anxiety

Prevent crashes

Improve smooth energy and focus

❤️ 6. Supports Heart and Blood Pressure Health

May help reduce stress-related increases in blood pressure

Supports overall cardiovascular relaxation

🧬 7. Brain Protection (Neuroprotective)

May help protect brain cells from stress and oxidative damage

Being studied for memory and cognitive support

✅ Typical reasons people take it

Anxiety or stress

Studying / productivity

Sleep support

ADHD focus support

Calming caffeine effects


View full details