You're getting 300mg of **Magnesium** per scoop — right in the upper range of clinical supplemental doses (100–400mg) and well-positioned for stress reduction, sleep support, and muscle relaxation. The citrate form absorbs significantly better than oxide and dissolves easily in water, which makes this powder format particularly practical for hitting a solid dose without swallowing multiple capsules.

**Magnesium** deficiency affects an estimated half the population, and standard blood tests often miss it because serum levels don't reflect intracellular stores. At 300mg, you're close to the 350mg supplemental upper limit, so one scoop daily is the sweet spot — stacking this with other magnesium-containing supplements could push you over.

The citrate form does have a mild laxative effect, which is worth knowing if you have a sensitive stomach. If your primary goal is sleep or stress support specifically, glycinate or threonate forms may offer more targeted benefits — but for broad magnesium repletion at a clinically meaningful dose, this delivers.

BioStacks
Natural Factors Stress-Relax

Magnesium Citrate Tropical Drink Mix

Powder · 3.3 Gram · 75 servings · $0.28/serving

iHerbAmazon

Best for

Heart

Ingredients (2)

Magnesium

100%

Dose

300 mg

Target

100–400 mg

Form

Standard

Stevia leaf powder

15 mg

Not in our database

Other Ingredients (1)

Natural Tropical FlavorFlavor

A proprietary natural flavoring blend imparting tropical-fruit taste

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

Suggested Usage: Add 1 scoop (3.3 g) of powder to 1/2 cup of warm or hot water and stir until dissolved. Cold water may be added after the mixture fizzes if desired. Take once per day or as directed by a health professional.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$20.97

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Near the median 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.

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