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Supplement Facts

Serving Size 2 Rounded Teaspoons (approx. 8.4 g)

Servings Per Container 30

  Amount Per Serving %Daily Value
Calories 20  
Total Carbohydrate 6 g 2%*
Vitamin C (naturally occurring) 1 mg 2%
Magnesium (as magnesium citrate) 800 mg 200%
Sodium 86 mg 4%

*Percent Daily Values (%DV) are based on a 2,000 calorie diet.

†Daily Value not established.

Other ingredients: citric acid, natural tangerine flavor, sodium bicarbonate and carbonate, strawberry fruit, natural peach flavor, and stevia leaf concentrate.

Suggested Use: Individual needs may vary. Start with ½ teaspoon (or less) daily and gradually increase to 2 rounded teaspoons. Some people may need to start with ¼ teaspoon and gradually work up to higher amounts according to bowel tolerability. Add powder to 1 ounce of hot or boiling water. Stir briskly until fully dissolved, then add more hot or cold water as desired and enjoy.

WARNING: If you are pregnant, may become pregnant, breastfeeding, have a history of kidney dysfunction, or are taking any prescription drug, consult your health care professional before using this product. If you experience loose stools, reduce your dosage. If symptoms persist, discontinue use and consult your health care professional immediately.

STORE IN A COOL, DRY PLACE.

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

  • Suitable for vegetarians.
  • Contains no yeast, dairy, egg, gluten, soy or wheat.
  • Contains no sugar, preservatives, or artificial color, flavor or fragrance.
  • TANGERINE FLAVOR
  • Promotes a feeling of well being



  • Suitable for vegetarians



  • Tangerine flavor


Source Naturals Serene Science Magnesium Serene Tangerine Flavor from Source Naturals helps promote relaxation and a sense of calm. Magnesium is a mineral that plays a role in many crucial functions in the human body. No yeast, diary, egg, gluten, soy, wheat, sugar, preservatives, or artificial color, flavor or fragrance.

Terms and Ingredient Definitions

Shipping Weight: .68 lbs

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

MSRP: $23.75

For our website and catalog, the MSRP is the "Manufacturer's Suggested Retail Price." The MSRP is understood to mean the price at which a manufacturer will recommend a retailer sell a product for in stores, on the internet, or in catalogs. The MSRP of National brand items are dictated to Swanson by each manufacturer. For Swanson brand items, the MSRP is calculated based on a varying percentage above the product's base price.

Rated 5 out of 5 by from Powerful Fizz I like this Magnesium Serene with tangerine flavor. It has a power house of flavor and have mixed it with Swanson's regular Magnesium powder to tone down the tangerine flavor from Source Natural. Using 1/2 - 1 teaspoon in 4 - 8 oz. hot water every morning starts my day with a Fizz.
Date published: 2016-07-05
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Swanson Health started in 1969 in Fargo, ND with a mission to offer pure and potent health products at a great value. Nearly 50 years later, we continue to innovate science-backed vitamins and supplements, delivering wellness solutions that help people live simply healthier together, and find vitality at any age. Click here to learn more about us.

For nearly 50 years, Swanson Health's research and development team has delivered science-backed health and wellness products to people around the world. Our innovation is guided by clinical research, scientific consensus, emerging research and usage traditions, creating products that help you find vitality at any age. At Swanson, we don't hide our science behind proprietary formulas — we believe in easy-to-read, transparent labelling. What's printed on our labels, is exactly what you'll find in our products.

Swanson Health's purity and potency testing begins with our ingredient sourcing, continues through manufacturing, and goes beyond when a product hits the shelf. Our testing exceeds industry standards, ensuring each product meets our quality guarantees for purity and potency. Swanson facilities are Good Manufacturing Practices (GMP) certified, and we voluntarily participate in third-party, independent laboratory testing. With Swanson, you can be sure you're getting the most pure and potent health products at a great value. Click here to learn more about our quality standards.

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