If you're looking for relaxation and sleep support, this delivers 420mg of **Magnesium** per scoop — the full RDA for men in a single serving, sitting at the top of the 100–400mg clinical supplement range.
The citrate form is a solid middle-ground choice — well absorbed and widely studied, though it can have a mild laxative effect at higher doses, which is worth knowing at 420mg. The powder format mixes into water or juice, making it easy to take before bed as part of your wind-down routine.
One consideration: the 420mg dose exceeds the 350mg supplemental upper limit set for magnesium from supplements specifically (the UL doesn't apply to food sources). If you're also getting magnesium from food and other supplements, you may want to start with one scoop and adjust based on how your digestion responds.
BioStacks
NaturesPlus
KalmAssure Magnesium Powder 420 mg Refreshing Orange
Powder · 8.7 Gram · 60 servings · $0.45/serving
Best for
Ingredients (1)
Magnesium
100%Dose
420 mg
Target
100–400 mg
Form
Standard
Nutrition
Calories, macros & sodium.
- Calories15 Calorie(s)
- Total Carbohydrates4 Gram(s)
- Total Sugars0 Gram(s)
- Xylitol0.5 Gram(s)
Other Ingredients (5)
XylitolSweetener
A FODMAP sugar alcohol that can cause GI distress (bloating, gas, diarrhea) at moderate doses (>10-20g/day), though supplement amounts are typically small. Extremely toxic to dogs — households with pets should store securely.
AnnattoColorant
Natural yellow-orange colorant derived from the seeds of the achiote tree (Bixa orellana)
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
Stevia ExtractSweetener
Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana
How to Take It
Best taken in the evening
Magnesium citrate pulls water into the bowel — mildly laxative at higher doses. Evening suits that; split the dose or switch to glycinate if it's too much.
With or without food
Space it a couple of hours from Iron and Calcium
On the label
Directions: As a dietary supplement, mix 2 rounded scoops in 8 fl. oz. of water or juice daily, or as recommended by your health care professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$27.16
Pricier than 70% of 579 magnesium supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.