BioStacks
Nutrition
Calories, macros & sodium.
- Sodium10 mg
Other Ingredients (6)
Magnesium Carbonate (excipient)Anticaking Agent
Magnesium carbonate used as an anti-caking, flow, and drying agent.
Natural FlavorsFlavor
Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.
Citric AcidAcidulant
Natural acid derived from citrus fruits
Malic AcidAcidulant
Naturally occurring organic acid found in apples, used as a flavor enhancer and acidulant in supplements
Sea SaltFlavor
Basic food-grade salt used for taste in supplements
Stevia ExtractSweetener
Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana
How to Take It
Best taken in the evening
Often taken at night for relaxation and sleep, but absorption is the same anytime — consistency matters most.
With or without food
Space it a couple of hours from Iron and Calcium
On the label
Mix one rounded scoop (4.8 g) of Swanson Mellow Mag in 8 ounces of cold water once per day. Adjust the amount of water as needed to achieve desired flavor intensity. Sip and enjoy!
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$33.37
Pricier than 77% of 574 magnesium supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.