Theanine Serene | GNC

Source Naturals® Theanine Serene


Item # 166539

Product Information



Serene Science
Calm Mind & Body
THEANINE SERENE contains the amino acid L-theanine, to support relaxation and focused attention, and the calming neurotransmitter GABA. Taurine can support the movement of potassium out of neurons, which may help prevent overexcitation of neurons. It also features magnesium to support muscle and nerve relaxation, and calming holy basil leaf extract to gently soothe away the tension in your body. Try THEANINE SERENE to start relaxing today.


Nutrition Facts
Serving Size  2 Tablet(s)
Servings Per Container  15

Amount Per Serving     % DV

Calories 5  

Total Carbohydrate 1g  
Magnesium (as magnesium chelate) 300mg   75%

GABA  500 mg   **
Taurine  450 mg   **
L-Theanine  200 mg   **
Relora® (a proprietary blend of a patented extract from magnolia officinalis bark and a proprietary extract from phellodendr  150 mg   **

** Daily Value (DV) not established.
Other Ingredients
Sorbitol, stearic acid, Modified cellulose gum, Silica
Label (click image to enlarge)

How To Use

Take 2 tablets daily.
Keep out of reach of children.
, Do not use if tamper evident seal is broken or missing., Do not use if you are using a monoamine oxidase inhibitor (MAOI), selective serotonin reuptake inhibitor (SSRI), or any other product containing or on neuropsychiatric drugs or supplements such as St Johns Wort or any antidepressants. Excessive consumption may impair ability to drive or operate heavy equipment. Not recommended for consumption with alcoholic beverages.
Source Naturals Inc. P.O. Box 2118 Santa Cruz, CA 95062


3.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I love this product! I recommend this product to anybody who deals with getting restful sleep at night due to anxiety. I’ve been taking this product for a couple months now and have had great results.
June 13, 2018
12 months ago
No Benefit Whatsoever
I have chronic, hard-core insomnia. This product did nothing to alleviate it. It may work for someone whose insomnia is less severe but for me it did nothing.
June 17, 2017
over 2 years ago
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