Why Customers Love Tranquil Sleep

There are few sleep supplements as raved about as Natural Factors Tranquil Sleep. Part of Natural Factors’ Stress-Relax line, Tranquil Sleep is a unique blend of L-Theanine, melatonin and 5-HTP. The combination helps ease our body into a relaxed state so that we fall asleep more easily and stay asleep throughout the night—without a groggy feeling in the morning.

Taken an hour before bedtime, all three nutrients work synergistically to promote restorative sleep, says Dr. Marita Schauch, ND and health educator for Natural Factors. “Melatonin, our sleep hormone, helps to drive a balanced sleep cycle with 5-HTP being a precursor to serotonin which in turn produces melatonin. L-Theanine induces a calm and relaxed nervous system by increasing alpha brain waves (relaxed state) and decreasing beta brain waves (excited state) helping us wind down,” she says.

Here’s more about how it works to help encourage better sleep—which in turn supports our adrenal function, our immune system and our cognitive abilities.

Tranquil Sleep’s 3 key ingredients

This amino acid is the middle step between tryptophan and the important brain chemical serotonin. Some of the key benefits of 5-HTP are its ability to decrease the amount of time required to fall asleep and reduce nighttime awakenings.

Secreted by the pineal gland, this hormone is critical in regulating our circadian rhythm, and thus helps control our sleep/wake cycles. Release of melatonin is stimulated by darkness and suppressed by light. Occasional sleeplessness can be a result of low melatonin levels at night, particularly in the elderly.

This amino acid supports relaxation and the ability to fall asleep. Research has shown that taking L-Theanine before bed can significantly promote sleep quality and the feeling of being refreshed when waking up.  

5 star customer reviews

I normally have a difficult time falling asleep. No more! This product has been a real solution for this problem. I take it at least 30 minutes before going to bed and I fall asleep almost instantly. I also like the chewable tabs rather than a capsule.


This product worked really well for me! I have had sleep issues off and on for years and I tried this product and it was very effective…and I didn’t feel drowsy.


I have been taking this product for the last 3 years and it has helped me with my sleep issues. It puts me into a relaxed state that helps me drift into a peaceful sleep.

Karin G.

This product does not keep me from waking up, but does eliminate the brain chatter that occurs when I do. This allows me to go back to sleep easily. Great product and unlike others I have tried, there is no hangover the next day.


I’ve been using Tranquil Sleep for years. My problem is not falling asleep but staying asleep. This has been the only product that consistently eliminates my interrupted sleep. I can’t function without it.


I had sleep issues for years until I started using Tranquil Sleep. I enjoy the mild relaxation that allows me to fall asleep, yet no drug feeling. Chewable tablets make it convenient to take at any time during the night!

Donna Noonan