Powder · 7.5 Grams · 30 servings · $1.27/serving
Best for
Ingredients (4)
Magtein Magnesium L-Threonate
100%Dose
2000 mg
Target
100–400 mg
Form
Premium
Vitamin D3
100%Dose
1000 IU
Target
1000–5000 IU
Form
Premium
Calcium
100%Dose
500 mg
Target
200–600 mg
Form
Standard
Magnesium
100%Dose
144 mg
Target
100–400 mg
Form
Not listed
Other Ingredients (6)
MaltodextrinBinder
Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.
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
Gum AcaciaBinder
Natural plant gum (acacia) used as a binder, stabilizer, and emulsifier in foods and supplements
Malic AcidAcidulant
Naturally occurring organic acid found in apples, used as a flavor enhancer and acidulant in supplements
Stevia ExtractSweetener
Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana
How to Take It
Best taken in the evening
The Magnesium in it is what pulls this toward the evening. Take it with a meal containing fat — the vitamin D in it absorbs poorly without one.
On the label
Mix one (1) scoop daily with water or juice to taste. Best if taken with food, or as recommended by a healthcare practitioner.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$37.97
Pricier than 93% of 552 vitamin D 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.