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Source Naturals, Theanine Serene, 60 Tablets

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In Stock
  • Expiration Date: Sep 2019
  • Shipping Weight: 0.3 lbs (0.14 kg)
  • Product Code: SNS-01775
  • UPC Code: 021078017752
  • Package Quantity: 60 Tablets
  • Dimensions: 2.2 x 2.2 x 3.9 in, 0.25 lbs (0.11 kg)
Product Overview


  • Calming Mind & Body
  • Dietary Supplement
  • Suitable for Vegetarians

Theanine Serine 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 Serine to start relaxing today.

Suggested Use

2 tablets daily.

Other Ingredients

Sorbitol, stearic acid, modified cellulose gum, and silica.

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor or fragrance.


If you are pregnant, may become pregnant, or breastfeeding or taking any medication including antidepressant drugs such as MAOI's, SSRI's, or other neuropsychiatric drugs or supplements such as St. John's wort, consult your health care professional before using this product. Excessive consumption may impair ability to drive or operate heavy equipment. Not recommended for consumption with alcoholic beverages.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

Supplement Facts
Serving Size: 2 Tablets
Servings Per Container: 30
  Amount Per Serving % DV
Calories 5  
Total Carbohydrate 1 g <1%*
Magnesium (as magnesium chelate) 300 mg 75%
GABA (gamma-aminobenzoic acid) 500 mg
Taurine 450 mg
L-Theanine 200 mg
Holy Basil Leaf Extract 100 mg
*Percent Daily Values (%DV) are based on a 2000 calorie diet.
†Daily Value not established.
iHerb Customer Reviews

Did not Work For Me

Posted by 4699510319235740100 on Jan 01, 2017

I did not find this product helpful with problems falling asleep and in my case it kept me awake. I will try using as a daytime stress reliever instead

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Still not sure

Posted by 5553679393251009069 on Dec 28, 2016

Maybe if my health condition was not so complicated and it was simply a case of anxiety then these may have been effective ...

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Posted by 5355151187902230138 on Dec 04, 2016

Va mejor que otros remedios que he probado como la melatonina o el 5htp. Me ha sorprendido gratamente.

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very good product, thank you

Posted by 5335271229049682380 on Sep 27, 2016

very good

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Works like a dream!

Posted by 5150305837242519043 on Sep 11, 2016

I've tried lots of herbal remedies and even prescription meds for my bad sleep and stress with no results until I found Theanine Serene. I had my doubts, but it really worked from the first tablet I took (one is enough for me) and I was able to sleep most of the night without waking up all the time. The tablets are rather large, but easily chewable and they don't leave a bad taste in your mouth. I have tried other theanine products, but none of them had the same effect than Theanine Serene has. I would definitely recommend. Very good product for a very good price.

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