BioStacks
Source Naturals

D-Mannose 500 mg

1 Capsule × 2/day · 60 servings

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What it does

D-Mannose

Form not confirmedGrade —

Studied for preventing recurrent urinary infections, but a large trial in primary-care women found no meaningful benefit.

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Ingredients (1)

IngredientDoseTarget/referenceForm

Other ingredients

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.

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Calcium CarbonateBuffer

Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

Lab testing

How to take it

With or without food
Split into 2 doses across the day

On the label

1 capsule twice daily.

Price check

$14.93

$0.25 / serving

$20$50$100

Cheaper than 95% of 30 D-Mannose 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.

Not medical advice. Consult your healthcare professional.

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