Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 1 Research
7
USERS' SCORE
Good
Based on 3 Reviews
8.4
Supplement Facts
Serving Size: 2 capsules
Amount Per Serving
%DV
Aged Garlic Extract™†† Powder (bulb)
400 mg
**
Nattokinase (NSK-SD®)
70 mg
**
L-Theanine (Suntheanine®)
24 mg
**

Top Medical Research Studies

We examined whether L-theanine, a natural amino acid found in tea, could improve sleep quality, especially for individuals affected by sleep apnea. Through various sleep assessments and questionnaires, we found that taking 200 mg of L-theanine before bedtime offers benefits not by putting one to sleep, but by easing anxiety.

This means users can experience better sleep without the sedative side effects commonly associated with traditional sleep aids. Importantly, L-theanine should not cause daytime drowsiness, making it a versatile option any time of the day.
Read More

Most Useful Reviews

9
Stable blood pressure
My blood pressure has decreased and is now more stable, which positively affects my sleep at night.
Read More
7.5
Relaxed and comfortable
I have slightly high blood pressure, and this has greatly helped me feel comfortable and relaxed, as well as improving my sleep.
Read More
7.5
Improved sleep quality
1 people found this helpful
Quality, ingredients, size, dosage, composition, taste, and packaging all match the description. The benefits for my body are significant; my muscles feel less fatigued during training and I have more energy. My sleep has also improved. I will certainly recommend it to my family and friends. Thank you, iHerb, for the opportunity to order such a wide range of high-quality supplements. I am completely satisfied.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 1 Research
7
  • All Researches
We examined whether L-theanine, a natural amino acid found in tea, could improve sleep quality, especially for individuals affected by sleep apnea. Through various sleep assessments and questionnaires, we found that taking 200 mg of L-theanine before bedtime offers benefits not by putting one to sleep, but by easing anxiety.

This means users can experience better sleep without the sedative side effects commonly associated with traditional sleep aids. Importantly, L-theanine should not cause daytime drowsiness, making it a versatile option any time of the day.
Read More

User Reviews

USERS' SCORE
Good
Based on 3 Reviews
8.4
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Stable blood pressure
My blood pressure has decreased and is now more stable, which positively affects my sleep at night.
Read More
7.5
Relaxed and comfortable
I have slightly high blood pressure, and this has greatly helped me feel comfortable and relaxed, as well as improving my sleep.
Read More
7.5
Improved sleep quality
1 people found this helpful
Quality, ingredients, size, dosage, composition, taste, and packaging all match the description. The benefits for my body are significant; my muscles feel less fatigued during training and I have more energy. My sleep has also improved. I will certainly recommend it to my family and friends. Thank you, iHerb, for the opportunity to order such a wide range of high-quality supplements. I am completely satisfied.
Read More

Frequently Asked Questions

9
Stable blood pressure
My blood pressure has decreased and is now more stable, which positively affects my sleep at night.
7.5
Relaxed and comfortable
I have slightly high blood pressure, and this has greatly helped me feel comfortable and relaxed, as well as improving my sleep.
7.5
Improved sleep quality
1 people found this helpful
Quality, ingredients, size, dosage, composition, taste, and packaging all match the description. The benefits for my body are significant; my muscles feel less fatigued during training and I have more energy. My sleep has also improved. I will certainly recommend it to my family and friends. Thank you, iHerb, for the opportunity to order such a wide range of high-quality supplements. I am completely satisfied.
We examined whether L-theanine, a natural amino acid found in tea, could improve sleep quality, especially for individuals affected by sleep apnea. Through various sleep assessments and questionnaires, we found that taking 200 mg of L-theanine before bedtime offers benefits not by putting one to sleep, but by easing anxiety.

This means users can experience better sleep without the sedative side effects commonly associated with traditional sleep aids. Importantly, L-theanine should not cause daytime drowsiness, making it a versatile option any time of the day.

References

  1. Rao TP, Ozeki M, Juneja LR. In Search of a Safe Natural Sleep Aid. J Am Coll Nutr. 2015;34:436. doi:10.1080/07315724.2014.926153
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