' 
SCIENTIFIC SCORE
Possibly Effective
Based on 1 Research
7
USERS' SCORE
Good
Based on 59 Reviews
8.5
Supplement Facts
Serving Size: 1 Veggie Capsule
Serving Per Container: 90
Amount Per Serving
%DV
L-Theanine (Suntheanine®)
150 mg
†
Top Medical Research Studies
7
L-theanine improves sleep quality safely
In Search of a Safe Natural Sleep Aid.
Effective, safe natural sleep aid
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.
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
Calming effects noted
I got this supplement for myself as a mother with a lot of worries and psychological stress. I was drawn to the fact that theanine calms without sedation. After taking it for a few days, I noticed superb results; I became much calmer and my sleep improved significantly. The brand also impresses me with its quality.
Read More
8.3
Stopped sleeping pills
This good product helped my husband to stop taking sleeping pills. It also resolved my sleep problems last autumn. Taking three capsules on an empty stomach led to a peaceful night's sleep for both of us.
Read More
9.5
Assists sleep quality
This product is ideal for those who wake frequently at night. By taking 150mg before sleep, I've consistently slept well until morning. The quantity is good, and it has become a significant aid in my nightly routine.
Read More
Medical Researches
SCIENTIFIC SCORE
Possibly Effective
Based on 1 Research
7
- All Researches
7
L-theanine improves sleep quality safely
In Search of a Safe Natural Sleep Aid.
Effective, safe natural sleep aid
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.
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 59 Reviews
8.5
- All Reviews
- Positive Reviews
- Negative Reviews
9
Calming effects noted
I got this supplement for myself as a mother with a lot of worries and psychological stress. I was drawn to the fact that theanine calms without sedation. After taking it for a few days, I noticed superb results; I became much calmer and my sleep improved significantly. The brand also impresses me with its quality.
Read More
8.3
Stopped sleeping pills
This good product helped my husband to stop taking sleeping pills. It also resolved my sleep problems last autumn. Taking three capsules on an empty stomach led to a peaceful night's sleep for both of us.
9.5
Assists sleep quality
This product is ideal for those who wake frequently at night. By taking 150mg before sleep, I've consistently slept well until morning. The quantity is good, and it has become a significant aid in my nightly routine.
9
Good night's sleep
You can calm your mind and enjoy a good night's sleep. I take it in the evening to stabilise my mood and calm my mind. Having tried various brands, Doctor's Best theanine works best for me. You really can sleep well when you feel at peace, and upon waking, you know you've had a restful night.
Read More
9.5
Daytime solution
If you have trouble getting to sleep, try this! It has been a godsend for my husband, who works nights, helping him to sleep during the day. No side effects at all!
